Published by De Gruyter

Volume 34 Issue 12

Issue of Zeitschrift für Naturforschung B

Contents
Journal Overview

Open Access June 2, 2014

Electrochemical Syntheses, XVII [1]. Ozone Synthesis by Electrolysis of Water

Heinz P. Fritz, Jordanis C. G. Thanos, Dietrich W. Wabner

Page range: 1617-1627

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Abstract

Dimensionally stable lead dioxide anodes on a titanium substrate [2, 3] were tested for application in ozone electrosynthesis in a variety of aqueous electrolytes. At room temperature an ozone concentration of up to 13% by weight in the anodic gas composed of O 3 and O 2 is attained by using an aqueous phosphate electrolyte.

Open Access June 2, 2014

Oberflächenverbindungen von Übergangsmetallen, XXII [1]. Die Umsetzung von Oberflächen-Chrom(II) auf Silicagel mit Olefinen bei höherer Temperatur. - Zum Mechanismus von Aufbau-, Abbau-, Metathese- und Isomerisierungs-Reaktionen an koordinativ ungesättigten Oberflächen-Metallionen / Surface Compounds of Transition Metal, XXII [1]. The Reaction of Surface Chromium(II) on Silica with Olefins at Higher Temperature. - A Contribution to the Mechanism of Growth, Degradation, Metathesis and Isomerization on Coordinatively Unsaturated Surface Metal Ions

Hans-Ludwig Krauss, Erich Hums

Page range: 1628-1636

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Abstract

With chromium(II) supported on silica, at T > 150 °C olefins undergo growth/degradation/metathesis reactions by addition/elimination of even and uneven chain fragments including Ci. Simultaneously, catalytic double bond isomerization and C-rearrangements to methyl branched olefins occur. One mechanism is proposed for all these reactions via a pseudo-tetrahedral MC 3 intermediate. Polyethylene synthesis at lower temperatures may follow the same way. For growth/degradation/metathesis the formation of a metal carbene unit is postulated as a characteristic, step; in case of ethylene, >Cr=CH 2 will be formed as a precursor of the final CH 4 (resulting from a secondary reaction with support hydrogen).

Open Access June 2, 2014

Cs₂Sb₈S₁₃, ein neuer Formel-und Strukturtyp bei Thioantimoniten / Cs₂Sb₈S₁₃ -A New Formula and Structure Type in the Group of Thioantimonites

Klaus Volk, Herbert Schäfer

Page range: 1637-1640

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Abstract

Cs 2 Sb 8 S 13 has been prepared and its structure determined. It crystallizes in the triclinic system P1̄ with a = 1543.7(5) pm, b = 1148.8(4) pm, c = 829.9(4) pm; α = 71.89(5)°, β = 102.45(5)°, γ = 95.16(5)°. SbS 3 -ψ-tetrahedra and SbS 4 -ψ-trigonal bipyramids are connected together to sheets, separated by Cs ions.

Open Access June 2, 2014

Über neue Carbamoyl-carbonyl-Komplexe des Eisens, Rutheniums und Osmiums [1] / About New Carbamoyl Carbonyl Complexes of Iron, Ruthenium and Osmium [1]

Anton Jungbauer, Helmut Behrens

Page range: 1641-1645

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Abstract

The covalent carbamoyl compounds M(CO) 2 (PR 3 ) 2 (Hal)(CONH 2 ) (M = Fe, Ru, Os; Hal = Cl, Br; R = Ph, Cyclohexyl) and Os(CO)(NO)(PPh 3 ) 2 (CONH 2 ) are formed by the reactions of the cationic complexes [M(CO) 3 (PR 3 ) 2 (Hal)] + and [Os(CO) 2 (NO)(PPh 3 ) 2 ] + with liquid NH 3 between -75 and -40 °C.

Open Access June 2, 2014

Perfluormethyl-Element-Liganden, XXI [1]. Darstellung und Charakterisierung von Organoelement-Element-Verbindungen des Typs R_nE–ER_m (R = CH₃, CF₃; E = P, As, S, Se, Te; n,m = 1, 2) / Perfluoromethyl Element Ligands, XXI [1]. Preparation and Characterization of Organoelement Element Compounds of the Type R_nE–ER_m (R = CH₃, CF₃; E = P, As, S, Se, Te; n,m = 1, 2)

Peter Dehnert, Joseph Grobe, Wilhelm Hildebrandt, Duc le Van

Page range: 1646-1652

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Abstract

Element-element compounds of the general type R n E-ER m (R = CH 3 , CF 3 ; E = P, As, S, Se, Te; n,m = 1, 2) have been prepared by different synthetic methods. New compounds were characterized by analytical and spectroscopic (NMR, MS) investigations. Information about the most suitable preparative route for all possible combinations is given in Tables I to III.

Open Access June 2, 2014

Perfluormethyl-EIement-Liganden, XXII [1]. Darstellung und spektroskopische Untersuchung von Cr(CO)₅L-Komplexen (L=R₂EER′₂, R₂EE′R; R, R′ =CH₃, CF₃; E = P, As; E′ =S, Se, Te) / Perfluoromethyl Element Ligands, XXII [1]. Preparation and Spectroscopic Investigation of Cr(CO)₅L Complexes (L = R₂EER′₂, R₂EE′R; R, R′ = CH₃, CF₃; E = P, As; E′ = S, Se, Te)

Joseph Grobe, Duc le Van

Page range: 1653-1660

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Abstract

Cr(CO) 5 L complexes (L = R 2 EER′ 2 , R 2 EE′R; E, R′ = CH 3 and/or CF 3 ; E = P, As; E′ = S, Se, Te) have been prepared by reaction of Cr(CO) 5 THF with L at room temperature. Thew new compounds were characterized by analytical and spectroscopic (IR, NMR, MS) methods.

Open Access June 2, 2014

Ein Beitrag zur Chemie von Verbindungen des Bautyps M_xPd₃O₄ / A Contribution to the Chemistry of the Compounds M_xPd₃O₄

H.-J. Meyer, Hk. Müller-Buschbaum

Page range: 1661-1662

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Abstract

Single crystals of a new compound Pd 0.5 Pd 3 O 4 were prepared and investigated by X-ray methods. It crystallizes with Na x Pt 3 O 4 -type structure (space group O h 3 -Pm3n, a = 575.6 pm). The distribution of the oxydation states of Pd with respect to the lattice positions is discussed.

Open Access June 2, 2014

Über einen Chrom-Mangan-Spinell mit Kationenmangelstruktur, CrMn_1,5O₄ / About a Chromium Manganese Spinel with Cation Deficient Structure: CrMn_1,5O₄

Reinhold Priebe, Horst Sabrowsky

Page range: 1663-1665

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Abstract

Thermal decomposition of the black precipitate Cr 2 Mn 3 O 9 · aq at 1300 K leads to the dark brown spinel CrMn 1,5 O 4 (a = 847.9 pm; Z = 8; Fd3m). By magnetic measurements and model calculations from powder data of the spinel we propose the ionic distribution Cr IV [Mn II Mn IV 0,5 ]O 4 with x = 0.35.

Open Access June 2, 2014

Solvatisierte HalogenochaLkogen(IV)säuren, I Darstellung und Struktur des Hexabromoselen(IV)säure-Hydrats (H₅O₂)₂SeBr₆ · 4H₂O / Solvated Halogeno-Chalcogen(IV) Acids, I Preparation and Structure of the Hexabromoselenium(IV) Acid Hydrate (H₅O₂)₂SeBr₆ · 4H₂O

Bernt Krebs, Michael Hein

Page range: 1666-1670

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Abstract

Hexabromoselenium(IV) acid with the stoichiometric composition H 2 SeBr 6 · 8 H 2 O is prepared from solutions of SeBr 4 in concentrated aqueous HBr. If separated from the solution, the crystalline compound is stable only at low temperatures. A single crystal X-ray structure analysis at -100 °C (monoclinic, C2/m, a = 1039.4(5), b = 1028.8(4), c = 836.6(3) pm, β = 104.11(4)°) shows the acid to contain, besides regular octahedral SeBr 6 2- ions (Se-Br: 255.3(2)-257.9(2) pm), H 5 O 2 + hydronium ions (O···O: 255(2) pm). The remaining H2O molecules are involved in a hydrogen bond system with O···O: 264(2)-275(2) pm and O···Br: 342(1), 351(1) pm. The formula has to be written as (H 5 O 2 ) 2 SeBr 6 · 4 H 2 O.

Open Access June 2, 2014

Zum Problem der Farbträger des Ultramarin-Grün und des Ultramarin-Rot / On the Problem of the Colored Species in Ultramarine Green and Ultramarine Red

Fritz Seel, Hans-Joachim Güttler, Andrzej B. Więckowski, Bernhard Wolf

Page range: 1671-1677

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Abstract

ESR and UV/VIS spectra indicate that the color of ultramarine green is due to two radical ions S 2 - (yellow) and S 3 - (blue) whereas ultramarine red contains the neutral sulfur molecule S4 (red) predominantly. On heating in chlorine gas, ultramarine violet was converted to a red powder which exhibited the ESR signal of SO 3 - with g = 2.0036 and in its reflection spectrum the characteristic band of S 3 near 24,400 cm -1 .

Open Access June 2, 2014

Die Monoantimonide RbSb und CsSb / The Monoantimonides RbSb and CsSb

Hans Georg von Schnering, Wolfgang Hönle, Gabriele Rrogull

Page range: 1678-1682

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Abstract

The alkali metal monoantimonides RbSb and CsSb were synthesized from the elements in sealed quartz ampoules. These compounds crystallize in the NaP-type structure (RbSb: P2 1 2 1 2 1 (No. 19), a = 731.5pm, b = 719.7 pm, c = 1281.5 pm, Z = 8; CsSb: P2 1 2 1 2 1 (No. 19), a = 757.6 pm, b = 734.5 pm, c = 1327.3 pm, Z = 8). The main feature of the structures are 1 ∞ [Sb - ] chains parallel to the 5-axis with bond distances. d̄(Sb-Sb) = 285.8 pm and 285.3 pm, respectively. These bond lengths are discussed in detail relative to those in elementary antimony and to the tetrahedral or covalent radii. The volume increment of Sb - can be derived to be 29.8 cm 3 · mole -1 .

Open Access June 2, 2014

Die Kristallstruktur des Rubidiumtrimolybdatosulfats Rb₂SMo₃O₁₃ / The Structure of the Rubidiumtrimolybdatosulfate Rb₂SMo₃O₁₃

Joachim Fuchs, Hans-Ulrich Kreusler, Achim Förster

Page range: 1683-1685

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Abstract

By acidification of an aqueous solution of Rb 2 MoO 4 with sulfuric acid the rubidium trimolybdatosulfate Rb 2 SMo 3 O 13 · 0.72 H 2 O is formed. A compound with the same composition and evidently the same structure but free of crystal water is obtainable by melting a mixture of Rb 2 SO 4 and MoO 3 in molar ratios 1:3. The X-ray structure investigation shows the anion to be built up from double chains of MoO 6 octahedra. Always three neighbouring octahedra are linked about common vertices with one SO 4 tetrahedron. The tetrahedra are alternating above and below the double chain. - Rb 2 SMo 3 O 13 is the first known macromolecular heteropolymolybdate.

Open Access June 2, 2014

NaCdAs und TlCdSb, ternäre Verbindungen mit modifizierter anti-PbCl₂-Struktur / Ternary Compounds in a Modified anti-PbCl₂-Structure

Burkhard Krenkel, Christoph Tiburtius, Haas-Uwe Schuster

Page range: 1686-1689

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Abstract

The compounds NaCdAs and TlCdSb were prepared from the elements, they crystallize in a modified anti-PbCl 2 -type lattice, space group Pnma-D 2h 16 . The lattice constants are NaCdAs: a = 757.6(4) pm; b = 447.1(4) pm; c = 804.4(4) pm; TICdSb: a = 817.7(5) pm; b = 488.5(5) pm; c = 851.4(5) pm.

Open Access June 2, 2014

Beiträge zur Chemie des Phosphors, 91 [1]. Li₃P₇, ein Polyphosphid mit fluktuierenden Bindungen: Synthese aus P₂H, und Überführung in P₇H₃ / Contributions to the Chemistry of Phosphorus, 91 [1] Li₃P₇, a Polyphosphide with Fluctuating Bonds: Synthesis from P₂H₄ and Conversion to P₇H₃

Marianne Bäudler, Hans Ternberger, Wolfgang Faber, Josef Hahn

Page range: 1690-1697

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Abstract

Trilithiumheptaphosphide, Li 3 P 7 · 3 solvents (monoglyme, THF) (1), was obtained as the final product in the reaction of diphosphane-4 with n-C 4 H 9 Li or LiPH 2 . 1 was characterized by elemental analysis, IR, Raman and NMR spectroscopy as well as by the formation of the derivatives (Me3Si) 3 P 7 and P 7 MO 3 (3). Studying the temperature dependence of the 31 P NMR spectrum, all P atoms in the cage structure of 1 were found to become equivalent at + 80 °C. Thus trilithiumheptaphosphide is the first known polyphosphide with fluctuating bonds. Silylation of 1 with Me 3 SiCl and subsequent solvolysis with MeOH leads to the corresponding hydride, P 7 H 3 (2), which can be remetalated to the lithium salt 1. 2 was also characterized by its IR, Raman and mass spectra.

Open Access June 2, 2014

Darstellung und Kristallstruktur von (PPh₃)₃Ag₂WS₄, einem neuartigen Dreikern-Komplex mit tetraedrisch und trigonal planar koordinierten Ag-Atomen / Preparation and Crystal Structure of (PPh₃)₃Ag₂WS₄, a Novel Trinuclear Complex with Tetrahedral and Trigonal Planar Coordination of the Ag Atoms

Achim Müller, Hartmut Bögge, Elisabeth Königer-Ahlborn

Page range: 1698-1702

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Abstract

The title compound was prepared by reaction of AgNO 3 , P(C 6 H 5 ) 3 and (NH 4 ) 2 WS 4 in a dichloromethane/water system. The crystal structure was determined from single crystal X-ray diffraction data (monoclinic, space group P2 1 /c, with a = 1811,1(2), b = 1735.6(2), c = 1779,7(2) pm, β = 95,02(1)°, V = 5572,7 · 10 6 pm 3 , Z = 4). The compound contains a tetradentate WS 4 2- ligand and two silver atoms, having a tetrahedral and trigonal planar coordination.

Open Access June 2, 2014

Kalium-und Tetrachloroantimon(V)-phosphate / Potassium and Tetrachloroantimony(V) Phosphates

Monika Bräuninger, Wolfgang Schwarz, Armin Schmidt

Page range: 1703-1710

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Abstract

The potassium dimethoxi-, -dimethylaminomethoxi- and -bis(dimethylamino)phosphates (1), (2) and (3) were prepared by reaction of KOH and the corresponding phosphoric esterchlorides. 2 reacts with antimony(V) chloride to yield the dimeric tetrachloro- antimony(V) dimethylaminomethoxiphosphate (4). The crystal and molecular structures of 4 and the dimeric tetrachloroantimony(V) dimethoxiphosphate (5) were determined by X-ray analysis. The vibrational and NMR spectra of 1-4 are reported and briefly discussed.

Open Access June 2, 2014

μ-Oxo-bis[trichloro-2.4-pentandionatoantimon(V)] Darstellung, Struktur und Spektren / μ-Oxo-bis[trichloro-2,4-pentanedionatoantimony(V)] Preparation, Molecular Structure and Spectra

Sigfried Blösl, Wolfgang Schwarz, Armin Schmidt

Page range: 1711-1714

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Abstract

μ-Oxo-bis[trichloro-2,4-pentanedionatoantimony(V)] (2) is prepared by reacting d,h-μ- propionato-e-μ-hydroxo-f-μ-oxo-bis[trichloroantimony(V)] (7) with 2,4-pentandione. The crystal and molecular structure of 2 is determined and the vibrational spectrum assigned.

Open Access June 2, 2014

Ternäre Alkalimetallverbindungen vom Mg₃₂(Zn,Al)₄₉-Typ mit Elementen der 4. Hauptgruppe / Ternary Compounds of the Mg₃₂(Zn, Al)₄₉-Type Structure with Alkali Metals and IV B-Elements

Wolfgang Döring, Werner Seelentag, Werner Buchholz, Hans-Uwe Schuster

Page range: 1715-1718

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Abstract

In the ternary systems Li-Cu-Si, Li-Ni-Si and Na-Au-Si (Ge, Sn) five phases could be prepared and characterized by single crystal investigations, which crystallize in a cubic body-centered lattice and are related to the Mg 32 (Zn, Al) 49 -type structure (T-phases).

Open Access June 2, 2014

Neue elektrovalente ternäre Verbindungen des Kaliums mit Magnesium und Elementen der 5. Hauptgruppe / New Ternary Compounds of Potassium with Magnesium and Elements of the 5. Main Group

Rainer Vogel, Hans-Uwe Schuster

Page range: 1719-1721

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Abstract

Ternary Potassium Compounds, Crystal Data The compounds KMgP, KMgAs, KMgSb and KMgBi were prepared and their structures determined by powder and single crystal data. The compounds crystallize in a modified Cu 2 Sb type structure, space group P4/nmm-D 4h 7 . The cell parameters are: KMgP: a = 444,6pm, c = 754,4pm, c/a = 1,69, KMgAs: a = 454,6pm, c = 771,6pm, c/a = 1,69, KMgSb: a = 481,2 pm, c = 820,2 pm, c/a = 1,70, KMgBi: a = 488,1 pm, c = 838,2 pm, c/a = 1,72.

Open Access June 2, 2014

Nitrogen-14 Nuclear Quadrupole Resonance in Some Hexanitro Complexes of the Type R₂PbCu(NO₂)₆

Tetsuo Asaji, Ryuichi Ikeda, Daiyu Nakamura

Page range: 1722-1728

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Abstract

The nuclear quadrupole resonance of nitrogen-14 was observed for potassium, ammonium, rubidium, and thallium lead hexanitrocuprates(II) at various temperatures below the second highest transition temperature of each complex. All the compounds except the ammonium salt yielded two practically same sets of the quadrupole parameters, eQq/h and η, indicating the presence of at least two crystallographically different but very similar kinds of nitrogen atoms in the crystals. For the ammonium salt, three phase transitions at 94.5, 287, and 316 K were located from the experiments of DTA and NQR. The crystals of the highest and the second highest temperature phases were proved to be i8omorphous with those of the remaining complexes in their highest and intermediate temperature phases, respectively. The salt yielded two sets of the quadrupole parameters between 287 and 94.5 K, and only one sot below 94.5 K down to 4.2 K, indicating that a structural phase transition takes place at 94.5 K. No resonance could be observed in the highest and the second highest temperature phases of all the complexes studied. The covalency of copper-nitrogen bonds in lead hexanitrocuprates(II) is estimated at about 10% from the quadrupole parameters observed at 4.2 K. The structure of the complex anion is discussed in relation to the Jahn-Toller distortion.

Open Access June 2, 2014

1.3-Dioxolohetarene, 3 [1]. Darstellung und Reaktionen von Pyrido[2.3-d]- und Pyrido[3.4-d] [1.3]dioxolen / 1,3-Dioxolohetarenes, 3 [1]. Preparation and Reactions of Pyrido[2,3-d]-and Pyrido[3,4-d][1,3]dioxoles

Franz Daliacker, Peter Fechter, Volker Mues

Page range: 1729-1736

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Abstract

The methylester of 3,4-dihydroxy-pyridine-6-carboxylic acid (1) reacts with bromochloromethane/potassjumcarbonate leading to the methylester of pyrido[3,4-d][1,3]-dioxole-6-onrhoxylic apid (2a). 2,3-Dihydroxy-pyridine (3a), 6-methyl- (3b), 5-chloro- (3c), and 5-bromo-2,3-dihydroxy-pyridine (3d) lead under the same conditions to the pyrido-[2,3-d][1,3]dioxole derivatives 4a, 4b, 4c, and 4d. The ester of 2,3-dihydroxy-pyridine-5-carboxylic acid (3e) and 4,6-dibromo-2,3-dihydroxy-pyridine (3f) also can be subjected to methylenation yielding the pyrido[2,3-d][1,3]dioxole compounds 4e and 4f. Treatment of 6-bromo-pyrido[2,3-d][1,3]dioxole (4d) with n-butyllithium gives 6- lithium-pyrido[2,3-d][1,3]dioxole (5a) allowing reaction with carbondioxide, N,N-di- methylformamide, N,N-dimethylacetamide, and sulphur/iodine to obtain the carboxylic acid 5b, the aldehyde of, the ketone 5g, and the disulfide 5n. The structures of compound 5b, 5f, and 5g were proofed by synthesis of derivatives.

Open Access June 2, 2014

Synthese und Reaktionen von Phosphonio-acetyl-Peptiden und ihren Yliden / Synthesis and Reactions of Phosphonio-acetyl Peptides and Ylides

Horst Kunz, Hermann Kauth

Page range: 1737-1744

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Abstract

Triphenylphosphonio-acetyl-(Tpa)-amino acids (5) and peptide esters (6) are prepared from the corresponding monpchloro acetyl derivatives (3) and (4). Alternatively the Tpa- amino acids (5) may be obtained by treatment of the N-silyl amino acid silylesters with the triphenylphosphonio-acetic acid phenylester (7) or the corresponding ylide (8). Tpa- amino acids prepared in this manner may be used for peptide condensation. The Tpa- group is acid-stable. In aprotic media the ylides of the Tpa-dipeptide esters (13) are formed on treatment with strong bases, and are converted in the course of the Wittig- olefination to the substituted acrylo peptide esters 15. The trans o-nitro-cinnamoyl moiety may be cleaved from the amino function of the peptide esters as 3,4-dihydro-a- quinolone via catalytic hydrogenation.

Open Access June 2, 2014

Der retentive Verlauf nukleophiler Substitutionen an 7-exo-Norcaryltriflat [1] / Retentive Reaction of Nucleophilic Substitutions with 7-exo-Norcaryltriflat [1]

Harald Dauner, Dieter Lenoir, Ivar Ugi

Page range: 1745-1749

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Abstract

The S N reactions of 7-exo-norcaryl triflate with strong nucleophiles (Cl θ , Br θ , N 3 θ ) under S N 2 conditions proceed with complete configurational retention. The 30-50% byproducts are non-isomeric and are presumably formed by elimination and subsequent oligomerization.

Open Access June 2, 2014

Der Einfluß der Kettenlänge auf die massenspektrometrigche Fragmentierung höherer 1.ω-Diphenylalkane / The Influence of the Chain Length on the Mass Spectrometric Fragmentation of Higher 1, ω-Diphenylalkanes

Dietmar Kuck, Hans-Friedrich Grützmacher

Page range: 1750-1764

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Abstract

The mass spectrometric fragmentation of 1,ω-diphenylalkanes (2 ≤ ω ≤ 22) has been studied in order to elucidate the effect of the chain length on the reactions of unstable and metastable molecular ions with respect to the occurrence of internally solvated ions in the gas phase. The unstable molecular ions of all 1,ω-diphenylalkanes react predominantly by formation of C 7 H 7 + and C 7 H 8 + ions, the latter ones are also formed by metastable molecular ions. Neither the variation of the relative abundances of these fragment ions with the chain length nor the fragmentation of specifically deuterated molecular ions indicate any internal solvation in the reacting ions. Inspite of the localized activated C-H bonds at the benzylic positions, these “activated” H atoms are not involved in intramolecular hydrogen exchange reactions or the formation of C 7 H 8 + ions (with the exception of ω = 3). Especially the higher homologues (co ≿ 12) react very similarly to the molecular ions of 1-phenylalkanes, while the fragmentation of the lower homologues (co ≲ 6) is determined by specific (“vinculoselective”) competitive reactions, e.g. loss of C 7 H 7 and C 8 H 8 .

Open Access June 2, 2014

Notizen: Über neue ternäre Fluoride vom Typ Ag₃MF₃, und AgMF₄ / On New Ternary Fluorides of the Type Ag₃MF₆ and AgMF₄

Roland Lösch, Christoph Hebecker

Page range: 1765-1766

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Abstract

Unit cell dimensions of new Ag 3 MF 6 compounds have been determined by Guinier-photographs: Ag 3 AlF 6 and Ag 3 GaF 6 crystallize tetragonally (isostructurally to Rb 3 TlFe); Ag 3 ScF 6 , Ag 3 lnFe and Ag 3 TlF 6 are monoclinic (Na 3 AlF 6 - type). AgGaF 4 crystallizes tetragonally (isostructurally to KFeF 4 ), AgScF 4 monoclinic in a new, unknown structure type.

Open Access June 2, 2014

Notizen: Synthese und Eigenschaften des Oktafluorodirhenat(III) -anions, [Re₂F₈]^2- / Synthesis and Properties of the Octafluorodirhenate(III) Anion, [Re₂F₈]^2-

G. Peters, W. Preetz

Page range: 1767-1768

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Abstract

The reaction of [Re 2 Cl 8 ] 2- and F - , both dissolved as ion pairs with [(n-C 4 H 9 ] + in nearly anhydrous CH 2 Cl 2 gives elder-coloured [(n-C 4 H 9 ) 4 N] 2 [Re 2 F 8 ] · 4H 2 O. On Laser irradiation of the solid complex at 80 K resonance Raman spectra are observed, exhibiting up to five overtones of v 1 = 320 cm -1 (Re-Re, A 1g ) and combination tones with V 2 = 625 cm -1 (Re-F, A 1g ). The spectroscopic constants are ω 1 = 319,6 ± 0.6 cm -1 , and x 11 = -0,45 ± 0,05 cm -1 . The Re-Re bond energy is estimated to be 162 ± 20 kcal/mol.

Open Access June 2, 2014

Notizen: Sr₃Al₂Sn₂ und Ba₃Al₂Sn₂ - ternäre Stannide im Ta₃B₄-Strukturtyp / Sr₃Al₂Sn₂ and Ba₃Al₂Sn₂ - Ternary Stannides in the Ta₃B₄-Structure

Axel Widera, Herbert Schäfer

Page range: 1769-1771

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Abstract

The new compounds Sr 3 Al 2 Sn 2 and Ba 3 Al 2 Sn 2 crystallize in the orthorhombic system (Immm-D 2h 25 ) with Sr 3 Al 2 Sn 2 : a = 446.5 ± 1 pm, b = 1979.5 ± 2 pm, c = 494.4 ± 1 pm, Ba3Al2Sn2: a = 459.4 ± 1 pm, b = 2063.4 ± 2 pm, c = 523.0 ± 1 pm, and build up an ordered variant of the Ta 3 B 4 - structure type.

Open Access June 2, 2014

Buchbesprechung

Page range: 1772-1772

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Open Access June 2, 2014

Subject Index

Page range: 1773-1804

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Open Access June 2, 2014

Authors Index

Page range: 1805-1808

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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)

> Information on submission process

Volume 34 Issue 12

Issue of Zeitschrift für Naturforschung B

Electrochemical Syntheses, XVII [1]. Ozone Synthesis by Electrolysis of Water

Abstract

Abstract

Cs2Sb8S13, ein neuer Formel-und Strukturtyp bei Thioantimoniten / Cs2Sb8S13 -A New Formula and Structure Type in the Group of Thioantimonites

Abstract

Über neue Carbamoyl-carbonyl-Komplexe des Eisens, Rutheniums und Osmiums [1] / About New Carbamoyl Carbonyl Complexes of Iron, Ruthenium and Osmium [1]

Abstract

Abstract

Abstract

Ein Beitrag zur Chemie von Verbindungen des Bautyps MxPd3O4 / A Contribution to the Chemistry of the Compounds MxPd3O4

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Über einen Chrom-Mangan-Spinell mit Kationenmangelstruktur, CrMn1,5O4 / About a Chromium Manganese Spinel with Cation Deficient Structure: CrMn1,5O4

Abstract

Solvatisierte HalogenochaLkogen(IV)säuren, I Darstellung und Struktur des Hexabromoselen(IV)säure-Hydrats (H5O2)2SeBr6 · 4H2O / Solvated Halogeno-Chalcogen(IV) Acids, I Preparation and Structure of the Hexabromoselenium(IV) Acid Hydrate (H5O2)2SeBr6 · 4H2O

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Zum Problem der Farbträger des Ultramarin-Grün und des Ultramarin-Rot / On the Problem of the Colored Species in Ultramarine Green and Ultramarine Red

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Die Monoantimonide RbSb und CsSb / The Monoantimonides RbSb and CsSb

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Die Kristallstruktur des Rubidiumtrimolybdatosulfats Rb2SMo3O13 / The Structure of the Rubidiumtrimolybdatosulfate Rb2SMo3O13

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NaCdAs und TlCdSb, ternäre Verbindungen mit modifizierter anti-PbCl2-Struktur / Ternary Compounds in a Modified anti-PbCl2-Structure

Abstract

Beiträge zur Chemie des Phosphors, 91 [1]. Li3P7, ein Polyphosphid mit fluktuierenden Bindungen: Synthese aus P2H, und Überführung in P7H3 / Contributions to the Chemistry of Phosphorus, 91 [1] Li3P7, a Polyphosphide with Fluctuating Bonds: Synthesis from P2H4 and Conversion to P7H3

Abstract

Darstellung und Kristallstruktur von (PPh3)3Ag2WS4, einem neuartigen Dreikern-Komplex mit tetraedrisch und trigonal planar koordinierten Ag-Atomen / Preparation and Crystal Structure of (PPh3)3Ag2WS4, a Novel Trinuclear Complex with Tetrahedral and Trigonal Planar Coordination of the Ag Atoms

Abstract

Kalium-und Tetrachloroantimon(V)-phosphate / Potassium and Tetrachloroantimony(V) Phosphates

Abstract

μ-Oxo-bis[trichloro-2.4-pentandionatoantimon(V)] Darstellung, Struktur und Spektren / μ-Oxo-bis[trichloro-2,4-pentanedionatoantimony(V)] Preparation, Molecular Structure and Spectra

Abstract

Ternäre Alkalimetallverbindungen vom Mg32(Zn,Al)49-Typ mit Elementen der 4. Hauptgruppe / Ternary Compounds of the Mg32(Zn, Al)49-Type Structure with Alkali Metals and IV B-Elements

Abstract

Neue elektrovalente ternäre Verbindungen des Kaliums mit Magnesium und Elementen der 5. Hauptgruppe / New Ternary Compounds of Potassium with Magnesium and Elements of the 5. Main Group

Abstract

Nitrogen-14 Nuclear Quadrupole Resonance in Some Hexanitro Complexes of the Type R2PbCu(NO2)6

Abstract

1.3-Dioxolohetarene, 3 [1]. Darstellung und Reaktionen von Pyrido[2.3-d]- und Pyrido[3.4-d] [1.3]dioxolen / 1,3-Dioxolohetarenes, 3 [1]. Preparation and Reactions of Pyrido[2,3-d]-and Pyrido[3,4-d][1,3]dioxoles

Abstract

Synthese und Reaktionen von Phosphonio-acetyl-Peptiden und ihren Yliden / Synthesis and Reactions of Phosphonio-acetyl Peptides and Ylides

Abstract

Der retentive Verlauf nukleophiler Substitutionen an 7-exo-Norcaryltriflat [1] / Retentive Reaction of Nucleophilic Substitutions with 7-exo-Norcaryltriflat [1]

Abstract

Der Einfluß der Kettenlänge auf die massenspektrometrigche Fragmentierung höherer 1.ω-Diphenylalkane / The Influence of the Chain Length on the Mass Spectrometric Fragmentation of Higher 1, ω-Diphenylalkanes

Abstract

Notizen: Über neue ternäre Fluoride vom Typ Ag3MF3, und AgMF4 / On New Ternary Fluorides of the Type Ag3MF6 and AgMF4

Abstract

Notizen: Synthese und Eigenschaften des Oktafluorodirhenat(III) -anions, [Re2F8]2- / Synthesis and Properties of the Octafluorodirhenate(III) Anion, [Re2F8]2-

Abstract

Notizen: Sr3Al2Sn2 und Ba3Al2Sn2 - ternäre Stannide im Ta3B4-Strukturtyp / Sr3Al2Sn2 and Ba3Al2Sn2 - Ternary Stannides in the Ta3B4-Structure

Abstract

Buchbesprechung

Subject Index

Authors Index

Cs₂Sb₈S₁₃, ein neuer Formel-und Strukturtyp bei Thioantimoniten / Cs₂Sb₈S₁₃ -A New Formula and Structure Type in the Group of Thioantimonites

Ein Beitrag zur Chemie von Verbindungen des Bautyps M_xPd₃O₄ / A Contribution to the Chemistry of the Compounds M_xPd₃O₄

Über einen Chrom-Mangan-Spinell mit Kationenmangelstruktur, CrMn_1,5O₄ / About a Chromium Manganese Spinel with Cation Deficient Structure: CrMn_1,5O₄

Solvatisierte HalogenochaLkogen(IV)säuren, I Darstellung und Struktur des Hexabromoselen(IV)säure-Hydrats (H₅O₂)₂SeBr₆ · 4H₂O / Solvated Halogeno-Chalcogen(IV) Acids, I Preparation and Structure of the Hexabromoselenium(IV) Acid Hydrate (H₅O₂)₂SeBr₆ · 4H₂O

Die Kristallstruktur des Rubidiumtrimolybdatosulfats Rb₂SMo₃O₁₃ / The Structure of the Rubidiumtrimolybdatosulfate Rb₂SMo₃O₁₃

NaCdAs und TlCdSb, ternäre Verbindungen mit modifizierter anti-PbCl₂-Struktur / Ternary Compounds in a Modified anti-PbCl₂-Structure

Ternäre Alkalimetallverbindungen vom Mg₃₂(Zn,Al)₄₉-Typ mit Elementen der 4. Hauptgruppe / Ternary Compounds of the Mg₃₂(Zn, Al)₄₉-Type Structure with Alkali Metals and IV B-Elements

Nitrogen-14 Nuclear Quadrupole Resonance in Some Hexanitro Complexes of the Type R₂PbCu(NO₂)₆

Notizen: Über neue ternäre Fluoride vom Typ Ag₃MF₃, und AgMF₄ / On New Ternary Fluorides of the Type Ag₃MF₆ and AgMF₄

Notizen: Synthese und Eigenschaften des Oktafluorodirhenat(III) -anions, [Re₂F₈]^2- / Synthesis and Properties of the Octafluorodirhenate(III) Anion, [Re₂F₈]^2-

Notizen: Sr₃Al₂Sn₂ und Ba₃Al₂Sn₂ - ternäre Stannide im Ta₃B₄-Strukturtyp / Sr₃Al₂Sn₂ and Ba₃Al₂Sn₂ - Ternary Stannides in the Ta₃B₄-Structure