Published by De Gruyter

Volume 31 Issue 10

Issue of Zeitschrift für Naturforschung B

Contents
Journal Overview

Open Access June 2, 2014

Beiträge zur Chemie des Phosphors, 68 Tri-t-butyl-cyclotriphosphan.

Contributions to the Chemistry of Phosphorus, 68 Tri-t-butyl-cyclotriphosphane

Marianne Baudler, Josef Hahn, Hermann Dietsch, Gabriele Fürstenberg

Page range: 1305-1310

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Abstract

In the reaction of magnesium with trimethylchlorosilane and t-butyldichlorophosphane the hitherto unknown tri-t-butyl-cyclotriphosphane, (t-BuP) 3 (1), is produced besides the partially silylated phosphanes t-BuP(SiMe 3 ) 2 and (t-BuPSiMe 3 ) 2 as well as the cyclotetraphosphane (t-BuP) 4 . Shortly after the beginning of the reaction the amount of 1 is about 50 mole-% and decreases during the reaction time. Thermally and in solution the P 3 ring compound (1) is surprisingly stable and can be isolated in a pure state by fractional distillation. (t-BuP) 3 clearly differs from the oligomeric (t-BuP) 4 by the lower melting point, the molar mass and by the 31 P NMR and IR spectra. The t-butyl groups in 1 are situated above and below the P 3 ring plane.

Open Access June 2, 2014

Beiträge zur Chemie des Phosphors, 69 Über ein einfaches Verfahren zur Darstellung von Tri-t-butyl-cyclotriphosphan.

Contributions to the Chemistry of Phosphorus, 69 A Simple Synthesis of Tri-t-butyl-cyclotriphosphane

Marianne Baudler, Christian Gruner

Page range: 1311-1312

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Abstract

A high yield synthesis of tri-t-butyl-cyclotriphosphane from magnesium and tertbutyldichlorophosphane is described.

Open Access June 2, 2014

Die elektrische Leitfähigkeit hydratisierter Sulfate zwei- und dreiwertiger Kationen.

The Electric Conductivity of Hydrated Sulfates of Di- and Trivalent Cations

Heinz P. Fritz, Dagmar Laschka

Page range: 1313-1316

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Abstract

The electrical conductivity of polycrystalline pellets of ZnSO 4 · 7 H 2 O, MgSO 4 · 7 H 2 O, CuSO 4 · 5 H 2 O, KAl(SO 4 ) 2 · 12 H 2 O, NH 4 Al(SO 4 ) 2 · 12 H 2 O and KCr(SO 4 ) 2 · 12 H 2 O was measured. By coulometry the role of protons as charge carriers was determined. A correlation is given between the strength of hydrogen bonds and the activation energies for the proton conductivity.

Open Access June 2, 2014

Über Derivate des Hydrazins, VI^I Darstellung und Charakterisierung von Bis(trimethylsilyl)aminoisocyanid.

On Derivatives of Hydrazide, VI¹ Preparation and Characterization of Bis(trimethylsilyl)aminoisocyanide

Nils Wiberg, Gerhard Hübler

Page range: 1317-1321

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Abstract

By reaction of carbon tetrachloride with lithium tris(trimethylsilyl)hydrazide and then with lithium butyl a compound with formula (Me 3 Si) 2 N 2 C is formed. From the way of preparation, spectroscopic investigations, and chemical reactions the substance is characterized as bis(trimethylsilyl)aminoisocyanide (3). 3 hydrolyzes, and does not react with oxygen. The compound combines with chlorine and bromine forming aminoisocyanide dihalides, and with carbon disulfide forming an adduct. At higher temperatures 3 isomerizes to bis(trimethylsilyl)carbodiimide (1).

Open Access June 2, 2014

Einige neue kristallisierte 7.7.8.8-Tetracyanochinondimethan(TCNQ)-Verbindungen mit Tetramminplatin(II)-Dikationen als Gegenionen.

Some New Crystalline 7,7,8,8-Tetracyanoquinodimethane (TCNQ) Compounds with Tetrammineplatinum(II) Dications as Counter Ions

H. Endres, H. J. Keller, W. Moroni, D. Nöthe

Page range: 1322-1325

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Abstract

New compounds of stoichiometry [Pt(II)L 2 ](TCNQ) 2 , [Pt(II)L 2 ](TCNQ) 3 and [Pt(II)L 2 ](TCNQ) 4 (with L = one bidentate or two monodentate neutral nitrogen donor ligands like ethylenediamine (en), 1,10-phenanthroline (phen) or ammonia) have been prepared and characterized. The complexes of stoichiometry [Pt(II)L 2 ](TCNQ) 2 with only negatively charged TCNQ- units have relatively low conductivities (in the range of 10 -7 —10 -8 Ω -1 cm -1 ) while the compounds [Pt(II)L 2 ](TCNQ) 3 containing one neutral TCNQ molecule per formula unit (“complex TCNQ-salts”) conduct much better (in the range of 10 -2 —10 -3 [Ω -1 · cm -1 ] for pellets). Most of them show appreciable deviations from a Curie law behaviour. A sharp transition from an antiferromagnetic low temperature to a paramagnetic high temperature modification can be observed for [Pt(II)dipy 2 ](TCNQ) 2 (dipy = 2,2′-dipyridyl) at 87°C.

Open Access June 2, 2014

Kernresonanzspektroskopische Untersuchungen an Vinyl-p-anisyl-dithiophosphinsäure-trimethylsilylester.

NMR Spectroscopic Investigations on Vinyl-p-anisyl-dithiophosphinic Acid Trimethylsilylester

Gerhard Hägele, Wilhelm Kuchen, Helmut Keck

Page range: 1326-1328

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Abstract

The 100 MHz 1 H NMR spectrum of vinyl-p-anisyl-dithiophosphinic acid trimethylsilylester is analyzed by iterative methods. Data for ABCX and [AB] 2 X spinsystems are reported.

Open Access June 2, 2014

Darstellung, Eigenschaften und Struktur von Bis(biscyclopentadienyltitan(III))-bis(dodekahydronido-dekaborato)zinkat, [(η-C₅H₅)₂Ti · OC₄H₈ · OC₃H₆]₂[Zn(Β₁₀Η₁₂)₂] · OC₄H₈.

Synthesis, Properties and Structure of Bis(biscyclopentadienyltitanium(III))-bis(dodecahydro-nidodecaborato)zincate, [η-C₅H₅)₂Ti · OC₄H₈ · OC₃H₆]₂[Zn(B₁₀H₁₂)₂] · OC₄H₈

Rudolf Allmann, Volker Bätzel, Reinhard Pfeil, Günter Schmid

Page range: 1329-1335

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Abstract

Reaction between (η-C 5 H 5 ) 2 TiCl and Zn(B 10 H 12 ) in tetrahydrofurane leads to a green, paramagnetic [(η-C 5 H 5 ) 2 Ti · OC 4 H 8 · OC 3 H 6 ] 2 [Zn(B 10 H 12 ) 2 ] · OC 4 H 8 whose structure was solved by statistical and Fourier methods.

Open Access June 2, 2014

Neue ternäre Telluride und Selenide der Alkalimetalle mit Elementen der 3. Hauptgruppe.

New Ternary Element(I)/Element(III)-Tellurides and Selenides

Jürgen Weis, Herbert Schäfer, Günter Schön

Page range: 1336-1340

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Abstract

The new ternary compounds NaAlSe 2 , NaAlTe 2 , NaGaTe 2 and KAlTe 2 crystallize in the Tl I Tl III Se 2 -structure type. The analogous Tl-compounds build up the same structure but show a variable composition within the limits (Na x Tl 1-x )TlSe 2 (0 < x < 0.47) and (K x Tl 1-x )TlSe 2 (0 < x < 0.56). The compounds KAlSe 2 , KGaSe 2 , KInSe 2 and KGaTe 2 crystallize in a new structure type.

Open Access June 2, 2014

Darstellung und Kristallstruktur des Na₂Ga₂Se₃.

Preparation and Crystal Structure of Na₂Ga₂Se₃

Jürgen Weis, Herbert Schäfer

Page range: 1341-1343

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Abstract

Na 2 Ga 2 Se 3 crystallizes trigonal/rhomboedric with a = 3.96 ± 0.02 Å and c = 25.01 ± 0.006 Å, c/a = 6.31. Na-atoms and Ga 2 -dumbbells occupy distorted octahedral sites in a close-packed ... ABCABC ... arrangement of Se-atoms. The final R-value is 0.143.

Open Access June 2, 2014

Zur Darstellung und Kristallstruktur von Na₂CuAs, K₂CuAs und K₂CuSb.

Preparation and Crystal Structure of Na₂CuAs, K₂CuAs and K₂CuSb

Brigitte Eisenmann, Gerhard Savelsberg, Herbert Schäfer

Page range: 1344-1346

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Abstract

The three new compounds crystallize orthorhombic, space group Cmcm with Na 2 CuAs: a = 8.86(2) Å, b = 7.22(2) Å, c = 5.34(2) Å; K 2 CuAs: a = 10.02(2) Å, b = 7.56(2) Å, c = 5.89(2) Å; K 2 CuSb: a = 10.50(2) Å, b = 7.93(2) Å, c = 6.23(2) Å. There are Cu–E(V)–Cu–E(V)-zigzag-chains in the structure, in which the Cu-atoms are linearly bonded to the E(V)-atoms.

Open Access June 2, 2014

Gemischtligandkomplexe von Osmium(III) mit verschiedenen Halogeniden, Pyridin und Methylpyrazin.

Mixed Ligand Complexes of Osmium(III) with Different Halides, Pyridin and Methylpyrazin

A. Scheffler, W. Preetz

Page range: 1347-1349

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Abstract

The preparation of the mixed complexes mer-[OsBr n I 3-n (Py) 2 (Mepyz)], n = 1, 2, by substituting or oxidizing exchange of the halide ligands and the chromatographic isolation of the pure compounds is described. Some steps of the successive substitution reactions take a stereospecific course due to the different trans-effects of I - and Br - .

Open Access June 2, 2014

Komplexchemie polyfunktioneller Liganden, XXXVIII. Präparative und schwingungsspektroskopische Untersuchungen zum Reaktionsverhalten von Mn₂(CO)₁₀ gegenüber dem tritertiären Phosphin 1.1.1-Tris(diphenylphosphinomethyl)äthan.

Complex Chemistry of Polyfunctional Ligands, XXXVIII. Preparative and Vibrational Spectroscopic Studies of the Reaction of Mn₂(CO)₁₀ with the Tritertiary Phosphine 1,1,1-Tris(diphenylphosphinomethyl)ethane

Jochen Ellermann, Helmut A. Lindner

Page range: 1350-1355

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Abstract

Decacarbonyldimanganese reacts with the tritertiary phosphine 1,1,1-tris(diphenylphosphinomethyl)ethane (triphos) to give the ionic complex [Mn(CO) 3 triphos][Mn(CO) 5 ]. Treatment of [Mn(CO) 3 triphos][Mn(CO) 5 ] with Na[B(C 6 H 5 ) 4 ], HClO 4 and NH 4 PF 6 yields the manganese(I) salts [Mn(CO) 3 triphos]Y (Y = B(C 6 H 5 ) 4 , ClO 4 , PF 6 ). The IR (2100-300 cm -1 ) and FIR spectra (350-200 cm -1 ) of all compounds are reported. Based on Raman polarization data the assignment of the v(CO) (A 1 + E), δ(MnCO) (A 1 + 2 E), v(MnC) (A 1 + E) and v(MnP) (A 1 ) modes was possible for the coordination polyhedra cis-Mn(CO) 3 P 3 (point group C 3v ). The v(MnP) (E) mode was unobserved due to its very low frequency.

Open Access June 2, 2014

Darstellung, Infrarotspektren und Strukturen einiger dimerer und polymerer Oxochloro- und Oxooxalato-isothiocyanato-Komplexe des Molybdän(V).

Synthesis, Infrared Spectra and Structure of Some Dimeric and Polymeric Oxochloro and Oxooxalato-isothiocyanato Complexes of Molybdenum(V)

Rainer Mattes, Dirk Altmeppen, Manfred Fetzer

Page range: 1356-1359

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Abstract

The crystal structure of (PyH) 2 (Mo 2 O 4 Cl 4 ) · 3 H 2 O, earlier formulated as tetrameric di-μ-oxo-bis(di-µ-oxo-oxotetrachloroaquodimolybdate(V)), [(PyH) 4 ][Mo 4 O 8 Cl 8 (H 2 O) 2 ], has been determined. The structure consists of the dimeric anions [Mo 2 O 4 Cl 4 ] 2 - with strong Mo=O ••• Mo interactions along the short c axes (c = 4.11 Å). The polymeric [N(CH 3 ) 4 ] 2 [Mo 2 O 3 (C 2 O 4 )(NCS) 4 ] and the dimeric [(PyH) 4 ][Mo 2 O 3 (C 2 O 4 ) 2 (NCS) 4 ] have been synthetized and characterized by infrared spectra and magnetic properties.

Open Access June 2, 2014

Reaktionen von Metallcarbonylverbindungen mit Diaziridin.

Reactions of Metal Carbonyls with Diaziridine

Wolfgang Danzer, Wolfgang Beck, Michael Keubler

Page range: 1360-1366

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Abstract

Cyclic carbamoyl complexes (2) and (3) result from the reaction of metal carbonyl hydrides with 3,3-pentamethylen diaziridine (1). 1 is cleaved at the metal by reaction with substituted metal carbonyls of Mo and W formally into ‘nitrene’ and cyclohexanone imine, which are isolated as isocyanate and ketimine complexes, respectively. 1 forms adducts with cobalt and nickel(II) chlorides.

Open Access June 2, 2014

Untersuchung des M₂/M₃-Phasenübergangs in V_1-xFe_xO₂ mit x = 0,024.

Investigation of the M₂/M₃ Phase Transition in V_1-xFe_xO₂ with x= 0.024

J. Pebler, K. Schmidt, H. Wasinski

Page range: 1367-1371

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Abstract

The Mössbauer investigations of V 1-x Fe x O 2 with x = 0.024 indicate that Fe enters two cation positions of M 2 and M 3 . At the phase transition the two quadrupole splittings show a discontinuous behavior whereas the isomer shift changes continuously with a crossingover at the M 2 , M 3 transition (T t′ = 275 K). Generally a first order phase transition is accompanied by a change of the cell volume V and a change of the isomer shift. The observed continuous behavior of the isomer shift points to a first order transition with δV ≠ 0.

Open Access June 2, 2014

E. Radiation Chemistry of Diphenylpicrylhydrazyl (DPPH), IV. The Mass Spectra of Some Aromatic Hydrazines. Comparison of Radiolytic and Photolytic Fragmentations

W. G. Filby, W. H. Kalus

Page range: 1372-1375

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Abstract

The mass spectra of some aryl hydrazines under electron impact are reported. In every case studied fragmentation occurs via fission of the weak hydrazyl N—N bond and hydrogen migration. Metastable ion data is presented in support of a proposed mechanism and some comparisons made between electron and radiation induced processes.

Open Access June 2, 2014

Preparation of 4-Hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl A Reinvestigation of Methods Using Hydrogen Peroxide in the Presence of Catalysts

G. Sosnovsky, M. Konieczny

Page range: 1376-1378

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Abstract

The preparation of the key intermediate for spin labeling, 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl (2), was reinvestigated using sodium tungstate or phosphotungstic acid with or without either Trilon or Triton B. A two-fold and a 3.5-fold molar excess of a 30% aqueous hydrogen peroxide solution was used. The oxidation of 4-hydroxy-2,2,6,6-tetramethylpiperidine (1) with a two-fold molar excess of a 30% aqueous hydrogen peroxide solution in the presence of sodium tungstate alone, under vigorous stirring for two hours, is the superior method (A) for the preparation of 2 in virtually quantitative yield.

Open Access June 2, 2014

Preparation of N,N,N′,N′-Bis(ethylene)-phosphorodiamidates of Steroids, Diacetone-D-glucose, and α-Tocopherol

G. Sosnovsky, M. Konieczny

Page range: 1379-1381

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Abstract

The phosphorodichloridates (1) of cholesterol, β-sitosterol, testosterone, diacetone-D-glucose, and tocopherol were prepared from phosphorus oxychloride in the presence of triethylamine. Tocopheryl phosphorodichloridate was too unstable to be isolated. Reaction of 1 with ethyleneimine in the presence of triethylamine gave the corresponding Ν,Ν,Ν′,N′-bis(ethylene)-phosphorodiamidates (2).

Open Access June 2, 2014

Sauerstoffanaloge Δ⁸- und Δ⁹-Tetrahydrocannabinole.

Oxygen Analogous of Δ⁸- and Δ⁹-Tetrahydrocannabinols

Udo Kraatz, Friedhelm Korte

Page range: 1382-1386

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Abstract

The phloroglucine derivatives (2 a–h) react with (+)-trans-p-menthadien-(2,8)-ol-(1) to give the oxygen analogous of (—)-Δ 8 -tetrahydrocannabinole such as 3 a–h. Some of these derivatives were converted by HCl-addition/elimination into the isomeric Δ 9 -compounds. The proposed structures of the derivatives are supported by spectroscopic data ( 1 H NMR, IR and MS).

Open Access June 2, 2014

Pyridazines, LXXXVI. Some Mesoionic Mercaptoazolopyridazines

Z. Bregar, B. Stanovnik, M. Tišler

Page range: 1387-1390

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Abstract

6-Mercapto anhydro salts of imidazo(1,2-b)- (2) and s-triazolo(4,3-b)pyridazines (7) were prepared and investigated. They were transformed into the corresponding 6-methylthio derivatives (3 or 8). Compounds of the type 3 are thermally demethylated into 4, but in the case of the 2-unsubstituted compound (3, R = H) also ring opening occurred to give compound 5 as minor product.

Open Access June 2, 2014

Impulsphotolytische Untersuchungen zum Mechanismus der photochemischen WoLFF-Umlagerung.

Flash Light Photolytic Investigations Concerning the Mechanism of the Photochemical WOLFF Rearrangement

F. Bölsing, E. Spanuth

Page range: 1391-1396

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Abstract

9,10-Diazophenanthrone undergoes WOLFF rearrangement in alcoholic solvents and yields esters of 9-fluorene carboxylic acid. By flash light photolysis four intermediates could be detected. Kinetic measurements showed that the ketene formed by photolysis reacts with the solvent to give a cyclopentadienylic carbanion, which is protonated. A carbene or an oxirene intermediate could not be found.

Open Access June 2, 2014

Reactions with 5,6,7-Trihydro-5,7-diarylthiazolo [3,2-b] -s-triazin-3(2 H)-ones

Adly Abdel-Wahid Soliman

Page range: 1397-1400

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Abstract

4,6-Diaryl-2-carboxymethylthio-3,4,5,6-tetrahydro-s-triazines are cyclised to 5,6,7-trihydro-5,7-diarylthiazolo[3,2-b]-s-triazine-3(2H)-ones (3). 2-Arylmethylene-5,6,7-trihydro-5,7-diarylthiazolo[3,2-b]-s-triazin-3(2H)-ones (4) were prepared by several methods. Compounds 3 coupled with diazotised anilines to give 2,3,5,6,7-pentahydro-5,7-diarylthiazolo[3,2-b]-s-triazine-2,3-dione 2-arylhydrazones (5). The action of amines on 3 a opens the thiazolone ring with the formation of substituted (4,6-diphenyl-tetrahydrotriazin-2-ylthio)-acetamides (6).

Open Access June 2, 2014

Synthesen von Heterocyclen, 198 Zur Chemie der vicinalen Triketone, VII. Chinolino-benzoxazine und Chinolino-benzoxazepine aus 2.3.4-Trioxo-1.2.3.4-tetrahydro-chinolinen.

Syntheses of Heterocycles, 198 The Chemistry of Vicinal Triketones, VII. Quinolino-benzoxazines and Quinolino-benzoxazepines from 2,3,4-Trioxo-1,2,3,4-tetrahydro-quinolines

Helga Wittmann, Reinhard Herzog

Page range: 1401-1406

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Abstract

2,3,4-Trioxo-l-phenyl-1,2,3,4-tetrahydro-quinoline (Ph—CHi) and 1,2,3-Trioxo-2,3,6,7-tetrahydro-1 H,5 H-benzo [ij] quinolizine (TMCHi) react with primary arylamines via “semiaminales” of type 1 to give quinolino-benzoxazinones of type 2 in high yields. Quinolino-benzoxazepines of type 3 are obtained with 2,6-dimethylaniline. However the N-unsubstituted 2,3,4-trioxo-1,2,3,4-tetrahydroquinoline (CHi) reacts under similar conditions only with 2-chloro- or 2,6-dimethyl-aniline to yield the corresponding ringclosed products 2 b and 3 a.

Open Access June 2, 2014

Synthesen von Heterocyclen, 199. Zur Chemie der vicinalen Triketone, VIII. Spiro-lactone aus 1.2.3-Trioxo-2.3-dihydro-phenalen sowie 2.3.4-Trioxo-1.2.3.4-tetrahydrochinolinen und Anthranilsäure.

Syntheses of Heterocycles, 199. The Chemistry of Vicinal Triketones, VIII. Spiro Lactones from 1,2,3-Trioxo-2,3-dihydro-phenalene and 2,3,4-Trioxo-1,2,3,4-tetrahydro-quinolines with Anthranilic Acid

Helga Wittmann, Hossein Taleban, Reinhard Herzog

Page range: 1407-1409

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Abstract

1,2,3-Trioxo-2,3-dihydro-phenalene (PT) and 1,2,3-trioxo-2,3,6,7-tetrahydro- 1 H, 5 H-benzo[ij]quinolizine (TMCHi) react with anthranilic acid (AS) primarily to give the spirolactones 1 a-1 b, which are thermically rearranged to the corresponding benzoxazine carboxylic acids 2 a-2 b. 1-phenyl-2,3,4-trioxo-1,2,3,4-tetrahydro-quinoline (PHCHi) reacts with AS yielding the spirolactone 1 c, which decomposes upon heating.

Open Access June 2, 2014

Synthesen von TRH-Derivaten des Typs L-Pyr-L-His-L-Pro-NH-(CH₂)_n-NH_a (n = 4, 7,10).

Synthesis of TRH Derivatives of General Structure L-Pyr-L-His-L-Pro-NH-(CH₂)_n-NH₂ (n = 4, 7, 10)

Stefan Fuchs, Wolfgang Voelter

Page range: 1410-1415

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Abstract

Synthetic routes to a new class of biologically active TRH derivatives of the general structure L—Pyr—L—His—L—Pro—NH—(CH 2 E) n —NH 2 are described.

Open Access June 2, 2014

Synthetic Studies towards anti-Leukaemic Alkaloids, VIII<br />The Roads to Vinblastine

Atta-Ur Rahman, Anwer Basha, Maryam Ghazala, Nighat Waheed

Page range: 1416-1420

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Abstract

Various synthetic approaches to the anti-cancer alkaloids vinblastine and vincristine are described. Methods for the generation of nine-membered nitrogen containing rings present in the indole moiety of vinblastine are discussed. Modes of joining the two moieties present in VLB in a natural configuration are presented.

Open Access June 2, 2014

Notizen: Preparation and Crystal Structure of the Hydrogen-Bonded Cyclic Dimer of PhP(S)[N(CH₂Ph)₂]OH, HN(CH₂Ph)₂+

T. Stanley Cameron, James D. Healy, Robert A. Shaw, Michael Woods

Page range: 1421-1422

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Abstract

The structure of the title compound was determined by X-ray crystallography. The compound is a cyclic dimer with short N···O and N···S contacts.

Open Access June 2, 2014

Notizen: Die Anwendung von Parametern der gegenseitigen Wechselwirkung in der ²⁹Si-Resonanz.

The Use of Pairwise Interaction Parameters for ²⁹Si-Chemical Shifts

M. Vongehr, H. C. Marsmann

Page range: 1423-1424

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Abstract

Silicon 29-chemical shifts can be described in some cases in terms of pairwise interaction parameters, although the influence of higher order effects is always perceptible. These are especially significant where fluorine or oxygen are the ligands around the silicon. Parameter of pairwise interaction for a number of ligands are given.

Open Access June 2, 2014

Notizen: Gezielte Synthese von Sulfinato-O̲- und -S̲-Komplexen einiger Übergangsmetalle, XVI¹ Sulfinato-S̲-Komplexe von Palladium(II) mit schwachen Donorliganden.

Directed Synthesis of Sulfinato-O̲- and -S̲-Complexes of Some Transition Metals, XVI¹ Sulfinato-S̲ Complexes of Palladium(II) with Weak Donor Ligands

Ingo-Peter Lorenz, Ekkehard Lindner, Wolfgang Reuther

Page range: 1425-1426

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Abstract

The complexes Na[(RS(O) 2 ) 2 PdClL] (L = CH 3 CN (2), (CH 3 ) 2 CO (3), THF (4)), stable in solid state, are obtained by substitution of H 2 O by weak donor ligands from Na[(RS(O) 2 ) 2 PdCl(OH 2 )] (1). Their special reactivity in solution is shown by the ready substitution of all ligands, RSO 2⁻ included. The IR spectra are discussed.

Open Access June 2, 2014

Notizen: Die Kristallstruktur von Tetramethylarsonium-dibromodimethylindat [(CH₃)₄As][(CH₃)₂InBr₂].

The Crystal Structure of Tetramethylarsonium-dibromodimethylindate [(CH₃)₄As][(CH₃)₂InBr₂]

W. Schwarz, H. J. Guder, R. Prewo, H. D. Hausen

Page range: 1427-1429

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Abstract

[(CH 3 ) 4 As][(CH 3 ) 2 InBr 2 ] has been prepared by reaction of (CH 3 ) 3 AsBr 2 with ln(CH 3 ) 3 . The compound crystallizes in the orthorhombic space-group P2 1 2 1 2 1 and four formula units in the cell. The structure was refined by least square analysis to a R-value of 0.072. As in [(CH 3 ) 4 As][CH 3 InCl 3 ] or [(CH 3 ) 4 Sb][CH 3 InCl 3 ] isolated cationic and anionic tetrahedra are found in the new compound.

Open Access June 2, 2014

Notizen: Zur Existenz des CrO₃J^--Ions.

On the Existence of the CrO₃J^--Ion

E. Königer-Ahlborn, A. Müller

Page range: 1429-1430

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Abstract

The preparation, infrared and electronic spectra of the salts [(C 6 H 5 ) 4 A]CrO 3 J (A = As, P) are reported and discussed.

Open Access June 2, 2014

Notizen: Inhibitor-Effekt von BF₃ auf die Umlagerung von / Inhibitory Effect of BF₃ on the Rearrangement of

J. Michalski, A. ŁoPusinski, W. J. Stec, E. Fluck

Page range: 1431-1433

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Abstract

The rapid conversion of phosphorus thiocyanates into isothiocyanates is caused by nucleophilic reagents. Thiocyanate structures can be stabilized by adding BF 3 . The mechanisms of conversion and stabilization are discussed.

Open Access June 2, 2014

Notizen: Darstellung und Kristallstruktur des Ba₂Si.

Preparation and Crystal Structure of Ba₂Si

Axel Widera, Herbert Schäfer

Page range: 1434-1435

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Abstract

Single crystals of Ba 2 Si have been prepared. From a complete X-ray structure determination follows the anti-PbCl 2 structure type.

Open Access June 2, 2014

Notizen: Hochenergetische Moleküle. Synthese von Tetramethyl-1.2-dioxa-4.5-diazin durch Photooxidation von Acetonazin.

High Energy Molecules. Synthesis of Tetramethyl-1,2-dioxa-4,5-diazine by Photooxidation of Acetoneazine

P. Lechtken

Page range: 1436-1437

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Abstract

By photooxidation of acetoneazine the unstable tetramethyl-1,2-dioxa-4,5-diazine and the trimeric acetoneperoxide are obtained. The dioxadiazine cleaves into acetone and nitrogen with a half live of ~ 20 min at 40°C (in CH 2 Cl 2 ) and induces luminescence in added fluorescent dyes.

Open Access June 2, 2014

Notizen: Photoreaktionen von 1-Hydroxy-1 H-benzotriazol und seiner Salze in Acetonitril.

Photochemical Reactions of 1-Hydroxy-1 H-benzotriazole and its Salts in Acetonitrile

Erik Lüddecke, Heinz Mauser, Jürgen Polster

Page range: 1438-1439

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Abstract

The photoreactions of 1-hydroxy- 1 H-benzotriazole and its salts are spectrophotometrically analyzed dependent on oxygen concentration in acetonitrile. Quantum yields have been determined.

Open Access June 2, 2014

Berichtigungen

Page range: 1440-1440

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About this journal

Objective
Zeitschrift fuer Naturforschung B (ZNB) publishes novel research in all areas of inorganic chemistry, organic chemistry, and analytical chemistry. In particular, the journal focuses on solid state chemistry, coordination chemistry, main group element chemistry, synthetic organic chemistry, natural product chemistry and, to a lesser extent, on analytical chemistry. For more than 65 years Zeitschrift fuer Naturforschung B has been open to contributions from all fields of experimental and theoretical chemistry. Zeitschrift fuer Naturforschung B publishes 12 issues per volume/year. Sometimes double issues occur.

Topics

Solid state chemistry
Coordination chemistry
Main group element chemistry
Organic chemistry
Natural product chemistry

Article formats
Original (full) papers, research notes and preliminary communications, reports on specific research topics of current interest (reviews)

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Volume 31 Issue 10

Issue of Zeitschrift für Naturforschung B

Beiträge zur Chemie des Phosphors, 68 Tri-t-butyl-cyclotriphosphan.

Contributions to the Chemistry of Phosphorus, 68 Tri-t-butyl-cyclotriphosphane

Abstract

Beiträge zur Chemie des Phosphors, 69 Über ein einfaches Verfahren zur Darstellung von Tri-t-butyl-cyclotriphosphan.

Contributions to the Chemistry of Phosphorus, 69 A Simple Synthesis of Tri-t-butyl-cyclotriphosphane

Abstract

Die elektrische Leitfähigkeit hydratisierter Sulfate zwei- und dreiwertiger Kationen.

The Electric Conductivity of Hydrated Sulfates of Di- and Trivalent Cations

Abstract

Über Derivate des Hydrazins, VII Darstellung und Charakterisierung von Bis(trimethylsilyl)aminoisocyanid.

On Derivatives of Hydrazide, VI1 Preparation and Characterization of Bis(trimethylsilyl)aminoisocyanide

Abstract

Einige neue kristallisierte 7.7.8.8-Tetracyanochinondimethan(TCNQ)-Verbindungen mit Tetramminplatin(II)-Dikationen als Gegenionen.

Some New Crystalline 7,7,8,8-Tetracyanoquinodimethane (TCNQ) Compounds with Tetrammineplatinum(II) Dications as Counter Ions

Abstract

Kernresonanzspektroskopische Untersuchungen an Vinyl-p-anisyl-dithiophosphinsäure-trimethylsilylester.

NMR Spectroscopic Investigations on Vinyl-p-anisyl-dithiophosphinic Acid Trimethylsilylester

Abstract

Darstellung, Eigenschaften und Struktur von Bis(biscyclopentadienyltitan(III))-bis(dodekahydronido-dekaborato)zinkat, [(η-C5H5)2Ti · OC4H8 · OC3H6]2[Zn(Β10Η12)2] · OC4H8.

Synthesis, Properties and Structure of Bis(biscyclopentadienyltitanium(III))-bis(dodecahydro-nidodecaborato)zincate, [η-C5H5)2Ti · OC4H8 · OC3H6]2[Zn(B10H12)2] · OC4H8

Abstract

Neue ternäre Telluride und Selenide der Alkalimetalle mit Elementen der 3. Hauptgruppe.

New Ternary Element(I)/Element(III)-Tellurides and Selenides

Abstract

Darstellung und Kristallstruktur des Na2Ga2Se3.

Preparation and Crystal Structure of Na2Ga2Se3

Abstract

Zur Darstellung und Kristallstruktur von Na2CuAs, K2CuAs und K2CuSb.

Preparation and Crystal Structure of Na2CuAs, K2CuAs and K2CuSb

Abstract

Gemischtligandkomplexe von Osmium(III) mit verschiedenen Halogeniden, Pyridin und Methylpyrazin.

Mixed Ligand Complexes of Osmium(III) with Different Halides, Pyridin and Methylpyrazin

Abstract

Komplexchemie polyfunktioneller Liganden, XXXVIII. Präparative und schwingungsspektroskopische Untersuchungen zum Reaktionsverhalten von Mn2(CO)10 gegenüber dem tritertiären Phosphin 1.1.1-Tris(diphenylphosphinomethyl)äthan.

Complex Chemistry of Polyfunctional Ligands, XXXVIII. Preparative and Vibrational Spectroscopic Studies of the Reaction of Mn2(CO)10 with the Tritertiary Phosphine 1,1,1-Tris(diphenylphosphinomethyl)ethane

Abstract

Darstellung, Infrarotspektren und Strukturen einiger dimerer und polymerer Oxochloro- und Oxooxalato-isothiocyanato-Komplexe des Molybdän(V).

Synthesis, Infrared Spectra and Structure of Some Dimeric and Polymeric Oxochloro and Oxooxalato-isothiocyanato Complexes of Molybdenum(V)

Abstract

Reaktionen von Metallcarbonylverbindungen mit Diaziridin.

Reactions of Metal Carbonyls with Diaziridine

Abstract

Untersuchung des M2/M3-Phasenübergangs in V1-xFexO2 mit x = 0,024.

Investigation of the M2/M3 Phase Transition in V1-xFexO2 with x= 0.024

Abstract

E. Radiation Chemistry of Diphenylpicrylhydrazyl (DPPH), IV. The Mass Spectra of Some Aromatic Hydrazines. Comparison of Radiolytic and Photolytic Fragmentations

Abstract

Preparation of 4-Hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl A Reinvestigation of Methods Using Hydrogen Peroxide in the Presence of Catalysts

Abstract

Preparation of N,N,N′,N′-Bis(ethylene)-phosphorodiamidates of Steroids, Diacetone-D-glucose, and α-Tocopherol

Abstract

Sauerstoffanaloge Δ8- und Δ9-Tetrahydrocannabinole.

Oxygen Analogous of Δ8- and Δ9-Tetrahydrocannabinols

Abstract

Pyridazines, LXXXVI. Some Mesoionic Mercaptoazolopyridazines

Abstract

Impulsphotolytische Untersuchungen zum Mechanismus der photochemischen WoLFF-Umlagerung.

Flash Light Photolytic Investigations Concerning the Mechanism of the Photochemical WOLFF Rearrangement

Abstract

Reactions with 5,6,7-Trihydro-5,7-diarylthiazolo [3,2-b] -s-triazin-3(2 H)-ones

Abstract

Synthesen von Heterocyclen, 198 Zur Chemie der vicinalen Triketone, VII. Chinolino-benzoxazine und Chinolino-benzoxazepine aus 2.3.4-Trioxo-1.2.3.4-tetrahydro-chinolinen.

Syntheses of Heterocycles, 198 The Chemistry of Vicinal Triketones, VII. Quinolino-benzoxazines and Quinolino-benzoxazepines from 2,3,4-Trioxo-1,2,3,4-tetrahydro-quinolines

Abstract

Synthesen von Heterocyclen, 199. Zur Chemie der vicinalen Triketone, VIII. Spiro-lactone aus 1.2.3-Trioxo-2.3-dihydro-phenalen sowie 2.3.4-Trioxo-1.2.3.4-tetrahydrochinolinen und Anthranilsäure.

Syntheses of Heterocycles, 199. The Chemistry of Vicinal Triketones, VIII. Spiro Lactones from 1,2,3-Trioxo-2,3-dihydro-phenalene and 2,3,4-Trioxo-1,2,3,4-tetrahydro-quinolines with Anthranilic Acid

Abstract

Synthesen von TRH-Derivaten des Typs L-Pyr-L-His-L-Pro-NH-(CH2)n-NHa (n = 4, 7,10).

Synthesis of TRH Derivatives of General Structure L-Pyr-L-His-L-Pro-NH-(CH2)n-NH2 (n = 4, 7, 10)

Abstract

Synthetic Studies towards anti-Leukaemic Alkaloids, VIII<br />The Roads to Vinblastine

Abstract

Notizen: Preparation and Crystal Structure of the Hydrogen-Bonded Cyclic Dimer of PhP(S)[N(CH2Ph)2]OH, HN(CH2Ph)2+

Abstract

Notizen: Die Anwendung von Parametern der gegenseitigen Wechselwirkung in der 29Si-Resonanz.

The Use of Pairwise Interaction Parameters for 29Si-Chemical Shifts

Abstract

Notizen: Gezielte Synthese von Sulfinato-O̲- und -S̲-Komplexen einiger Übergangsmetalle, XVI1 Sulfinato-S̲-Komplexe von Palladium(II) mit schwachen Donorliganden.

Über Derivate des Hydrazins, VI^I Darstellung und Charakterisierung von Bis(trimethylsilyl)aminoisocyanid.

On Derivatives of Hydrazide, VI¹ Preparation and Characterization of Bis(trimethylsilyl)aminoisocyanide

Darstellung, Eigenschaften und Struktur von Bis(biscyclopentadienyltitan(III))-bis(dodekahydronido-dekaborato)zinkat, [(η-C₅H₅)₂Ti · OC₄H₈ · OC₃H₆]₂[Zn(Β₁₀Η₁₂)₂] · OC₄H₈.

Synthesis, Properties and Structure of Bis(biscyclopentadienyltitanium(III))-bis(dodecahydro-nidodecaborato)zincate, [η-C₅H₅)₂Ti · OC₄H₈ · OC₃H₆]₂[Zn(B₁₀H₁₂)₂] · OC₄H₈

Darstellung und Kristallstruktur des Na₂Ga₂Se₃.

Preparation and Crystal Structure of Na₂Ga₂Se₃

Zur Darstellung und Kristallstruktur von Na₂CuAs, K₂CuAs und K₂CuSb.

Preparation and Crystal Structure of Na₂CuAs, K₂CuAs and K₂CuSb

Komplexchemie polyfunktioneller Liganden, XXXVIII. Präparative und schwingungsspektroskopische Untersuchungen zum Reaktionsverhalten von Mn₂(CO)₁₀ gegenüber dem tritertiären Phosphin 1.1.1-Tris(diphenylphosphinomethyl)äthan.

Complex Chemistry of Polyfunctional Ligands, XXXVIII. Preparative and Vibrational Spectroscopic Studies of the Reaction of Mn₂(CO)₁₀ with the Tritertiary Phosphine 1,1,1-Tris(diphenylphosphinomethyl)ethane

Untersuchung des M₂/M₃-Phasenübergangs in V_1-xFe_xO₂ mit x = 0,024.

Investigation of the M₂/M₃ Phase Transition in V_1-xFe_xO₂ with x= 0.024

Sauerstoffanaloge Δ⁸- und Δ⁹-Tetrahydrocannabinole.

Oxygen Analogous of Δ⁸- and Δ⁹-Tetrahydrocannabinols

Synthesen von TRH-Derivaten des Typs L-Pyr-L-His-L-Pro-NH-(CH₂)_n-NH_a (n = 4, 7,10).

Synthesis of TRH Derivatives of General Structure L-Pyr-L-His-L-Pro-NH-(CH₂)_n-NH₂ (n = 4, 7, 10)

Notizen: Preparation and Crystal Structure of the Hydrogen-Bonded Cyclic Dimer of PhP(S)[N(CH₂Ph)₂]OH, HN(CH₂Ph)₂+

Notizen: Die Anwendung von Parametern der gegenseitigen Wechselwirkung in der ²⁹Si-Resonanz.

The Use of Pairwise Interaction Parameters for ²⁹Si-Chemical Shifts

Notizen: Gezielte Synthese von Sulfinato-O̲- und -S̲-Komplexen einiger Übergangsmetalle, XVI¹ Sulfinato-S̲-Komplexe von Palladium(II) mit schwachen Donorliganden.

Directed Synthesis of Sulfinato-O̲- and -S̲-Complexes of Some Transition Metals, XVI¹ Sulfinato-S̲ Complexes of Palladium(II) with Weak Donor Ligands

Notizen: Die Kristallstruktur von Tetramethylarsonium-dibromodimethylindat [(CH₃)₄As][(CH₃)₂InBr₂].

The Crystal Structure of Tetramethylarsonium-dibromodimethylindate [(CH₃)₄As][(CH₃)₂InBr₂]

Notizen: Zur Existenz des CrO₃J^--Ions.

On the Existence of the CrO₃J^--Ion

Notizen: Inhibitor-Effekt von BF₃ auf die Umlagerung von / Inhibitory Effect of BF₃ on the Rearrangement of

Notizen: Darstellung und Kristallstruktur des Ba₂Si.

Preparation and Crystal Structure of Ba₂Si