Published by De Gruyter

Volume 61 Issue 2

Issue of Zeitschrift für Naturforschung B

Contents
Journal Overview

Open Access June 2, 2014

La(OH)₂I(H₂O): Closing a Gap in Rare Earth Hydroxide Halide Structural Chemistry

Tom Nilges

Page range: 117-122

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Abstract

UCl 3 type La(OH) 2 I can be stabilized by additional water molecules during a hydrothermal synthesis from hydroiodic acid and lanthanum carbonate hydrate at 453 K to form La(OH) 2 I(H 2 O). The new rare earth (RE) hydroxide halide hydrate crystallizes monoclinically, space group C2/m with lattice parameters of a = 19.691(3), b = 4.136(1), c = 6.286(1) Å, β = 108.45(1)° and V = 485.6(2) Å 3 , wR2 = 0.0695, 648 F 2 values and 32 variables. La centered, distorted, tricapped, trigonal prisms formed by iodide, (OH − )- and (H 2 O) groups are connected via common edges in [001]-direction and common faces in [010]-direction to built up a zigzag like layered arrangement. Hydrogen bonding between the water molecules and iodide ions of adjacent La(OH) 2 I layers stabilize the UCl 3 related structure, which was only observed for the lighter homologues La(OH) 2 X (X = Cl, Br) so far. DTA/TG and IR measurements substantiated the occurrence of (H 2 O)- and (OH − )-groups and semiquantitative EDX analyses proved a 1:1 composition for La:I in La(OH) 2 I(H 2 O).

Open Access June 2, 2014

The Squaric Acid Derivatives C₈O₄S₂ and C₈O₄Se₂ – Crystal Structures, Explosive Thermal Behavior and the Preparation of Carbon Suboxide Selenide OC₃Se by Flash Vacuum Pyrolysis

Johannes Beck, Petra Krieger-Beck, Klemens Kelm

Page range: 123-132

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Abstract

2,7-Diselenatricyclo[6.2.0.0 3.6 ]deca-1,3-diene-4,5,9,10-tetraone, C 8 O 4 Se 2 , was prepared from 1,2-diselenosquarate and squaric acid dichloride. Its crystal structure and the structure of the already known sulfur analogue C 8 O 4 S 2 were determined (C 8 O 4 S 2 : orthorhombic, Pca2 1 , a = 1413.64(2), b = 599.850(9), c = 968.8(1) pm; C 8 O 4 Se 2 : orthorhombic, Pnnm, a = 415.46(2), b = 894.29(5), c = 1160.14(7) pm). The structures are not isotypic and show a different packing of the molecules whose symmetry deviate only slightly from D 2h . In the four-membered C 4 rings the C-C bonds represent one single bond, one double bond and two slightly shortened single bonds. The C 4 rings are thus to be considered as cyclobutene-dione fragments. The vigorous exothermic decomposition of the compounds that occurs on heating to 220 to 240 °C shows that both are energetic materials. The explosions are accompanied by a heat evolution of −192 kJ/mol for C 8 O 4 S 2 and −224 kJ/mol for C 8 O 4 Se 2 . Performing the decomposition of C 8 O 4 S 2 in a closed autoclave leaves a residue of the composition “C 6 S” which was examined by transmission electron microscopy techniques and shown to consist mainly of amorphous carbon. This thermal behaviour is limiting the utilization of C 8 O 4 S 2 and C 8 O 4 Se 2 as precursors for the syntheses of OC 3 S and the yet unknown OC 3 Se via FVP. The formation of OC 3 S could be proven by the reaction of the trapped, slightly yellow product (evaporation at 200 °C, pyrolysis at 500 °C, trapping at −196 °C) with aniline which yielded thiomalonic acid dianilide, of which the crystal structure was determined (monoclinic, C2/c, a = 2814.8(16), b = 1201.7(8), c = 809.2(4) pm, β = 91.88(4)°, V = 2736(3) ・ 10 6 pm 3 ). The mass spectrum of C 8 O 4 Se 2 shows the strongest signal for OC 3 Se+, and FVP experiments (evaporation at 220 °C, pyrolysis at 650 °C, trapping at −75 °C) yielded small amounts of a bright yellow material which rapidly converted into a black polymer.

Open Access June 2, 2014

Synthesis, Crystal Structure, Spectroscopic and Thermal Properties of a Novel Mixed Ligand Copper(II) Complex with 5,5-Dimethylhydantoin and Benzylamine

Murat Taş, Serkan Soylu, Hümeyra Batı

Page range: 133-138

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Abstract

The crystal structure of the newly synthesized complex, trans-aqua-bis(benzylamino)-bis(5,5-dimethylhydantoinato) copper(II) was determined by X-Ray single crystal data. The thermal analyses, FT-IR and magnetic susceptibility data are also presented. The complex crystallizes in the monoclinic system, space group C2. The complex features a distorted square pyramidal [CuN 4 O] coordination with 5,5-dimethylhydantoinato, benzylamine and water ligands. The 5,5-dimethylhydantoinato anion is bonded to the copper(II) ion via its deprotonated N atom in the 3-position.

Open Access June 2, 2014

Lanthanide Complexes with D-Penicillamine Methyl Ester: Formation Constants, Spectral and Thermal Properties

Shehab A. Sallam, Marwa A. Mahmoud

Page range: 139-146

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Abstract

The complex-formation of the lanthanide(III) cations with D-penicillamine methyl ester have been investigated in acidic and neutral media. The macroscopic protonation constants of the ligand and the formation constants of [Ln·Pme] 2+ , [Ln·(Pme) 2 ]+, [Ln·Pme·OH] + and [Ln·Pme·(OH) 2 ] complexes have been determined from pH-metric data using BEST computer program. Species distribution diagrams of the complexes were obtained and plotted using SPE and SPEPLOT computer programs. Elemental analyses of the solid complexes indicate the formation of 1:1 metal:ligand species. Infrared spectra show that coordination takes place through the NH 2 , the SH and the C=O groups of the ligand. The complexes decompose in four steps as shown by their TG and DTA analysis with the formation of Ln 2 (SO 4 ) 3 as a final product. Activation energy values (ΔE a ) are correlated with the atomic radii of the metal ions. The mechanism of the thermal decomposition is proposed.

Open Access June 2, 2014

Synthesis, Crystal Structure, Spectral and Thermal Characterization of cis-Diaquabis(1,10-phenanthroline)zinc(II) Diorotate Hydrate, cis-[Zn(H₂O)₂(phen)₂](H₂Or)₂ · (H₂O)_2.125

Okan Zafer Yeşilel, İbrahim Uçar, Ahmet Bulut, Halis Ölmez, Orhan Büyükgüngör

Page range: 147-152

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Abstract

Preparation, X-ray crystal structure, thermal behavior, and IR spectroscopic studies of cis-diaquabis(1,10-phenanthroline)zinc(II) diorotate hydrate are described. In the compound [Zn(H 2 O) 2 (C 12 H 8 N 2 ) 2 ](C 5 H 3 N 2 O 4 ) 2 ·(H 2 O) 2.125 (1), the zinc ion, located on a twofold axis, is coordinated by two aqua ligands together with a pair of bidentate 1,10-phenanthroline (phen) molecules, and exhibits a distorted octahedral coordination. The orotate anions have a single negative charge each. The metal−coordinated water molecules link the orotate ions to the metal complex via O-H· · ·O hydrogen bonds. Also the uncoordinated water molecules are bonded to orotate ions through O-H· · ·O hydrogen bonds. Thus, an extensive network of hydrogen bonds together with π-π, and π-ring interactions stabilize the crystal structure and form an infinitive three dimensional structure. The thermal decomposition pathway of 1 has been investigated by the help of thermal analysis data (TG, DTG and DTA).

Open Access June 2, 2014

Synthesis, Spectral, Thermal and Structural Characterization of the Copper(II) Saccharinato Complex of 2–Aminopyrimidine, [Cu(sac–O)₂(ampym–N)₂(H₂O)₂]·2ampym

Okan Zafer Yeşilel, Halis Ölmez, Hümeyra Paşaoğlu, Gökhan Kaştaş, Orhan Büyükgüngör

Page range: 153-158

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Abstract

Bis(2-aminopyrimidine-N)diaquabis(saccharinato-O)copper(II) di(2-aminopyrimidine), [Cu(sac-O) 2 (ampym-N) 2 (H 2 O) 2 ] · 2ampym was synthesized and characterized by means of elemental analysis, IR and UV-vis spectroscopy, magnetic susceptibility, simultaneous TG, DTG, DTA techniques, and X-ray diffraction. The complex crystallizes in the monoclinic space group P21/c [a = 7.4697(5), b = 10.1679(5), c = 22.743(2)Å , β = 92.844(5), Z = 2, R = 0.0275, wR= 0.0757, V = 1725.26(19) Å 3 ]. The copper atom is bonded to two ampym N atoms and two sac O atoms as well as to two water O atoms in trans positions in the geometry of a distorted octahedron. There are also two ampym moieties as solvate molecules in the unit cell. The crystal structure is stabilized by N-H· · ·O, O-H· · ·N and C-H· · ·O type hydrogen bonding interactions. Intermolecular π−π interactions between the phenyl rings of ampym groups and C-H· · ·π interactions also support the packing of the molecules. The thermal decomposition of the complex has been studied.

Open Access June 2, 2014

Ferromagnetic Ordering in the Thallide EuPdTl₂

Rainer Kraft, Sudhindra Rayaprol, C. Peter Sebastian, Rainer Pöttgen

Page range: 159-163

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Abstract

The new thallide EuPdTl 2 , synthesized from the elements in a sealed tantalum tube in a highfrequency furnace, was investigated by X-ray diffraction on powders and single crystals: MgCuAl 2 type, Cmcm, Z = 4, a = 446.6(1), b = 1076.7(2), c = 812.0(2) pm, wR2 = 0.0632, 336 F 2 values, 16 variables. The structure can be considered as an orthorhombically distorted, palladium-filled variant of the binary Zintl phase EuTl 2 . The palladium and thallium atoms build up a three-dimensional [PdTl 2 ] polyanion with significant Pd-Tl (286 - 287 pm) and Tl-Tl (323 - 329 pm) interactions. The europium atoms fill distorted hexagonal channels of the [PdTl 2 ] polyanion. Susceptibility measurements show a magnetic moment of 7.46(5) μ B /Eu atom, indicative of divalent europium. EuPdTl 2 is a soft ferromagnet with a Curie temperature of T C = 12.5(5) K.

Open Access June 2, 2014

Synthesis and Characterization of the Oxynitride Y₂Mo₂O_4.5N_2.5 Pyrochlore: A Neutron Diffraction and Magnetic Study

M. J. Martínez-Lope, M. T. Casais, J. A. Alonso

Page range: 164-169

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Abstract

A new molybdenum oxynitride Y 2 Mo 2 O 4.5 N 2.5 with cubic pyrochlore structure (a = 10.3350(2) Å, space group Fd3̅m, Z =8) has been synthesized by heating the parent Y 2 Mo 2 O 7 oxide in flowing ammonia at 898 K. The polycrystalline sample has been characterized by thermal analysis, X-ray and neutron diffraction (NPD), and magnetic susceptibility measurements. The analysis of high resolution NPD data, based on the contrast existing between the scattering lengths of O and N, shows that both atoms are distributed at random at the anion substructure; the refined crystallographic formula implies an oxidation state of +5.25 for Mo cations. The thermogravimetric curve shows a weight gain of 7.5% at 1000 K in air, corresponding to the complete elimination of N 2 and oxidation to Mo(VI) oxide, in good agreement with the proposed composition. The magnetic susceptibility exhibits a Pauli-like, temperature-independent term which derives from the partial delocalization of Mo electrons on Mo-(O,N) bands with a broader bandwidth, as a consequence of the significant opening of the Mo-(O,N)-Mo angle and strengthening of the Mo-(O,N) interactions with respect to the parent Y 2 Mo 2 O 7 oxide. As in this oxide, a reminiscent spin-glass behaviour is observed at low temperature.

Open Access June 2, 2014

Preparation of Geminal Donor-Acceptor Units by Reactions of Low Valent Metal Halides with Iminium Chlorides

Xin Tian, Michael Hagemann, Roland Fröhlich, Tania Pape, Norbert W. Mitzel

Page range: 170-178

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Abstract

The organogallium compound [{Me 2 NCH 2 Ga(Cl,I) 2 } 2 ] (1) and the organoindium compounds [Me 2 NCH 2 In(Cl,Br) 2 ] 2 (2) and [Me 2 NCH 2 InCl 2 ] 2 (3) have been prepared by the reactions of the low valent metal halides “GaI”, InBr and InCl with the iminium salt [Me 2 N=CH 2 ]Cl. Compounds 1 and 2 are heterohalogen mixtures. These compounds were characterised by NMR spectroscopy and mass spectrometry, 1 furthermore by single crystal X-ray diffraction and 3 by elemental analysis. During the work-up procedure, minor amounts of hydrogen halide adducts of compounds 2 and 3 were isolated as single crystals, which contain a further equivalent of THF. These zwitter-ionic species Me 2 N(H)CH 2 In(Br,Cl) 3 ·THF (2·H(Cl,Br)·THF) and Me 2 N(H)CH 2 InCl 3 · THF (3 ·HCl ·THF) were identified by single crystal X-ray diffraction. Methylation reactions of compounds 1 and 2 with MeLi gave two well-established compounds [{Me 2 NCH 2 GaMe 2 } 2 ] and [{Me 2 NCH 2 InMe 2 } 2 ], which were obtained previously by different preparation procedures.

Open Access June 2, 2014

Improved Synthesis of 2-(4-Propylphenyl)ethanol

A. Stephen K. Hashmi, Tobias Burkert, Jan W. Bats, Aleksandra Martyniak

Page range: 179-181

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Abstract

A new procedure for the synthesis of 2-(4-propylphenyl)ethanol is provided. This new procedure significantly reduces side-products as 1-(4-propylphenyl)ethanol and 2-bromoethanol, which are obtained when using the previously known procedure. Only with the new procedure an efficient purification on the large scale needed for avoided-level-crossing muon-spin resonance experiments was possible. Structural details of the title compound could be derived from an X-ray structure analysis of a crystalline derivative, the nitrobenzoyl ester.

Open Access June 2, 2014

A New Type of Non-Kekulé Diradicals with Triplet Ground States. I. Polymethine Systems

Nikolai Tyutyulkov, Nedko Drebov, Klaus Müllen, Fritz Dietz

Page range: 182-188

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Abstract

It is shown theoretically that the ground state of a new class of non-Kekulé polymethine molecules can be a triplet state with non-degenerate singly occupied MOs. The investigated polymethine cyanine cations, polymethine oxonol anions, and neutral polymethine merocyanines are derivatives of the stable 2-azaphenalenyl radical whose pentamethine fragment is part of the polymethine chain.

Open Access June 2, 2014

Synthesis and Characterization of Silver(I) Saccharinate Complexes with Pyrazole and Imidazole Ligands: [Ag(sac)(pz)(H₂O)]_n and [Ag(sac)(im)] · 2H₂O

Veysel T. Yilmaz, Sevim Hamamci, Orhan Büyükgüngör

Page range: 189-193

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Abstract

Two new silver(I) saccharinate (sac) complexes, [Ag(sac)(pz)(H 2 O)] n (1) and [Ag(sac)(im)]·2H 2 O (2) (pz = pyrazole and im = imidazole), have been prepared and characterized by elemental analysis, IR spectroscopy, thermal analysis and single crystal X-ray diffraction. Complexes 1 and 2 crystallize in the monoclinic space group P2 1 /c and triclinic space group P1̅, respectively. The sac, pz and im ligands all are N-coordinated. In 1, the [Ag(sac)(pz)] units are bridged by aqua ligands to generate a one-dimensional helical chain, in which the silver(I) ions exhibit a distorted square-planar AgN 2 O 2 coordination geometry. The polymeric chains are connected by N-H· · ·O hydrogen bonds into sheets, which are further linked by aromatic π(pz) · · ·π(sac) stacking interactions into a three-dimensional supramolecular network. Complex 2 consists of individual molecules containing linearly coordinated silver(I) ions with a slightly distorted coordination of AgN 2 . The molecules interact with each other through hydrogen bonds and π· · ·π interactions to form a three-dimensional supramolecular network.

Open Access June 2, 2014

Zinc-Mediated Synthesis of Diaryl Selenides from Diaryl Diselenides and Diaryliodonium Salts in Aqueous Media

Barahman Movassagh, Azadeh Fazelia

Page range: 194-196

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Abstract

An efficient synthetic method has been developed for the preparation of symmetrical and unsymmetrical diaryl selenides through a one-pot reaction of diaryl diselenides and diaryliodonium salts in the presence of Zn/AlCl 3 system in aqueous media.

Open Access June 2, 2014

Biotransformation of (–)-Caryophyllene Oxide by Cell Suspension Culture of Catharanthus roseus

Muhammad Iqbal Choudhary, Zafar A. Siddiqui, Saifullah Khan, Saifullah, Syed G. Musharraf, Atta-ur-Rahman

Page range: 197-200

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Abstract

Catharanthus roseus cell suspension cultures were employed for the biotransformation of (-)-caryophyllene oxide (1), and four metabolites, 15-hydroxycaryophyllene oxide (2), 4β ,5α- dihydroxycaryophyll-8(13)-ene (3), 2β -hydroxycaryophyllene oxide (4), and 2-hydroxy-4,5- epoxycaryophyllan-13-ol (5) were obtained. Metabolites 4 and 5 were found to be new compounds, and their structures were deduced by different spectroscopic techniques.

Open Access June 2, 2014

New Triterpenoidal Alkaloids from Buxus hyrcana

Mohammad H. Meshkatalsadat, Abass Mollataghi, Athar Ata

Page range: 201-206

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Abstract

Phytochemical studies on the methanolic extract of the leaves of Buxus hyrcana pojark, collected in Iran, have resulted in the isolation of two new triterpenoidal alkaloids, (+)-2α,16β ,31- triacetylbuxiran (1), (+)-2α,16β ,31-triacetyl-9-11-dihydrobuxiran (2). Spectroscopic methods were used to elucidate the structures of these new natural products.

Open Access June 2, 2014

Synthesis and Structure of 1-Substituted Benzopyrano- [4’,3’-c]benzo[3”,4”-ƒ]-2,8-dioxabicyclo[3.3.1]nonane

Ilia Manolov, Caecilia Maichle-Moessmer, Elke Niquet

Page range: 207-212

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Abstract

The base catalyzed condensation reaction between 4-hydroxycoumarin and 3-acetylcoumarin (3-benzoylcoumarin) in water at reflux led to the formation of 1-methyl (1-phenyl)- benzopyrano[4’,3’-c]-benzo[3”,4”-ƒ ]-2,8-dioxabicyclo[3.3.1]nonane (2a, b) as final products. When 4-hydroxycoumarin and 3-acetylcoumarin reacted in a glacial acetic acid in the presence of potassium acetate the final product was 7-[3-acetyl-2-oxo-3,4-dihydro-2H-[1]benzopyran-4-yl]methyl- 6H,14H,14bH-bis-([1]benzopyrano)[4,3-b:4’,3’-d]pyran-6,14-dione (4). 4-Hydroxycoumarin and 4-(5-bromo-2-hydroxyphenyl)-3-buten-2-one were condensed in water at reflux and 1- methylcoumarino-[4’,3’-c]-bromobenzo[3”,4”-ƒ ]-2,8-dioxabicyclo[3.3.1]nonane was a final product (3).

Open Access June 2, 2014

Synthesis, Semiempirical, Stereoselectivity and Pharmacological Activity of a New Class of Spiro Pyrrolidine and Isoquinoline Derivatives

A.V. Londhe, B. Gupta, S. Kohli, P. Pardasani, R. T. Pardasani

Page range: 213-220

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Abstract

1,3-Dipolar cycloaddition of azomethine ylides derived from acenaphthylene-1,2-dione and 5- methyl-benzo[b]-thiophene-2,3-dione with L-proline, thiazolidine-4-carboxylic acid and 1,2,3,4- tetrahydroisoquinoline-3-carboxylic acid with various electron deficient dipolarophiles leads to the formation of novel spiroheterocycles having two or more chiral centers. Semiempirical studies have been performed to understand the stereochemical course of the reaction. The synthesized cycloadducts have been screened for antimicrobial and toxicological activity.

Open Access June 2, 2014

Structure of the Cocrystal of 2,2’-Diamino-4,4’-bis(1,3-thiazole) and 4,4’-Bipyridine

Maryam G. Amiri, Zohreh R. Ranjbar, Ali Morsali, Hong-Ping Xiao

Page range: 221-223

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Abstract

A new cocrystal based upon 2,2’-diamino-4,4’-bis(1,3-thiazole) and 4,4’-bipyridine has been synthesized and characterized. Self-assembly of this compound in the solid state is likely caused by both hydrogen boding and π-π stacking, and the network contains large vacant voids.

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 61 Issue 2

Issue of Zeitschrift für Naturforschung B

La(OH)2I(H2O): Closing a Gap in Rare Earth Hydroxide Halide Structural Chemistry

Abstract

The Squaric Acid Derivatives C8O4S2 and C8O4Se2 – Crystal Structures, Explosive Thermal Behavior and the Preparation of Carbon Suboxide Selenide OC3Se by Flash Vacuum Pyrolysis

Abstract

Synthesis, Crystal Structure, Spectroscopic and Thermal Properties of a Novel Mixed Ligand Copper(II) Complex with 5,5-Dimethylhydantoin and Benzylamine

Abstract

Lanthanide Complexes with D-Penicillamine Methyl Ester: Formation Constants, Spectral and Thermal Properties

Abstract

Synthesis, Crystal Structure, Spectral and Thermal Characterization of cis-Diaquabis(1,10-phenanthroline)zinc(II) Diorotate Hydrate, cis-[Zn(H2O)2(phen)2](H2Or)2 · (H2O)2.125

Abstract

Synthesis, Spectral, Thermal and Structural Characterization of the Copper(II) Saccharinato Complex of 2–Aminopyrimidine, [Cu(sac–O)2(ampym–N)2(H2O)2]·2ampym

Abstract

Ferromagnetic Ordering in the Thallide EuPdTl2

Abstract

Synthesis and Characterization of the Oxynitride Y2Mo2O4.5N2.5 Pyrochlore: A Neutron Diffraction and Magnetic Study

Abstract

Preparation of Geminal Donor-Acceptor Units by Reactions of Low Valent Metal Halides with Iminium Chlorides

Abstract

Improved Synthesis of 2-(4-Propylphenyl)ethanol

Abstract

A New Type of Non-Kekulé Diradicals with Triplet Ground States. I. Polymethine Systems

Abstract

Synthesis and Characterization of Silver(I) Saccharinate Complexes with Pyrazole and Imidazole Ligands: [Ag(sac)(pz)(H2O)]n and [Ag(sac)(im)] · 2H2O

Abstract

Zinc-Mediated Synthesis of Diaryl Selenides from Diaryl Diselenides and Diaryliodonium Salts in Aqueous Media

Abstract

Biotransformation of (–)-Caryophyllene Oxide by Cell Suspension Culture of Catharanthus roseus

Abstract

New Triterpenoidal Alkaloids from Buxus hyrcana

Abstract

Synthesis and Structure of 1-Substituted Benzopyrano- [4’,3’-c]benzo[3”,4”-ƒ]-2,8-dioxabicyclo[3.3.1]nonane

Abstract

Synthesis, Semiempirical, Stereoselectivity and Pharmacological Activity of a New Class of Spiro Pyrrolidine and Isoquinoline Derivatives

Abstract

Structure of the Cocrystal of 2,2’-Diamino-4,4’-bis(1,3-thiazole) and 4,4’-Bipyridine

Abstract

La(OH)₂I(H₂O): Closing a Gap in Rare Earth Hydroxide Halide Structural Chemistry

The Squaric Acid Derivatives C₈O₄S₂ and C₈O₄Se₂ – Crystal Structures, Explosive Thermal Behavior and the Preparation of Carbon Suboxide Selenide OC₃Se by Flash Vacuum Pyrolysis

Synthesis, Crystal Structure, Spectral and Thermal Characterization of cis-Diaquabis(1,10-phenanthroline)zinc(II) Diorotate Hydrate, cis-[Zn(H₂O)₂(phen)₂](H₂Or)₂ · (H₂O)_2.125

Synthesis, Spectral, Thermal and Structural Characterization of the Copper(II) Saccharinato Complex of 2–Aminopyrimidine, [Cu(sac–O)₂(ampym–N)₂(H₂O)₂]·2ampym

Ferromagnetic Ordering in the Thallide EuPdTl₂

Synthesis and Characterization of the Oxynitride Y₂Mo₂O_4.5N_2.5 Pyrochlore: A Neutron Diffraction and Magnetic Study

Synthesis and Characterization of Silver(I) Saccharinate Complexes with Pyrazole and Imidazole Ligands: [Ag(sac)(pz)(H₂O)]_n and [Ag(sac)(im)] · 2H₂O