bluuebunny/crossref_metadata_2025_split huggingface dataset:
Die Kristallstrukturen von 1,4-Dimethylpiperazinium-tetrabromocobaltat(II) und -zinkat(II), (dmpipzH2) [MIIBr4] (M = Co, Zn) / The Crystal Structures of 1,4-Dimethylpiperazinium Tetrabromocobaltate(II) and -Zincate(II), (dmpipzH2) [MIIBr4] (M = Co, Zn)
Authors: Feist Michael , Trojanov Sergej , Kemnitz Erhard 
Published: February 2015

Abstract
The compounds (dmpipzH2)[MIIBr4] (M = Co, Zn) crystallize at room temperature from equimolar solutions of 1,4-dimethylpiperazine and MBr2 · n H2O in 3M HBr. (dmpipzH2)[CoBr4] is isotypic with the homologous chlorometalates of Co and Zn and crystallizes in the mono­ clinic space group P21/m with a = 6.424(3), b = 14.588(6), c = 7.102(6) Å, β = 90.87(6)°, Z = 2. (dmpipzH2)[ZnBr4], however, crystallizes in the monoclinic space group P21/c with a = 7,605(5), b = 13,760(9), c = 13,286(7) Å, β = 93,03(6)°, Z = 4. Both structures contain centrosymmetric cations (dmpipzH2)2+ in the chair form and slightly distorted tetrahedra [MBr4]2- with a mirror plane in the case of M = Co. Several distances N···Br in both structures are interpreted in terms of N-H···Br hydrogen bonds which are favoured by the packing in the case of M = Zn.
Polysulfonylamine, LXX [1]. Das Assoziat EtOH ··· OH2 als Bindeglied in einem quaternären 18-Krone-6-Neutralmolekül-Komplex: Bildung und Kristallstruktur von (CH2CH2O )6·2 H2O·2EtOH · 2HN(SO2Ph)2 / Polysulfonylamines, LXX [1] The EtOH --OH2 Entity as a Link in a Quaternary 18-Crown-6 Complex with Uncharged Molecules: Formation and Crystal Structure of (CH2CH2O )6·2 H2O·2EtOH · 2HN(SO2Ph)2
Authors: Henschel Dagmar , Blaschette Armand , Jones Peter G. 
Published: February 2015

Abstract
Di(benzenesulfonyl)amine, 18-Crown-6, Quaternary Complex of Uncharged Molecules, Crystal Structure Co-crystallization of 18-crown-6 (18C6) and di(benzenesulfonyl)amine from dry ethanol at -20 °C affords the thermally labile and structurally uncharacterized ternary complex 18C6·2EtOH·2HN (SO2Ph)2 (2). Single crystals of the quaternary complex 18C6-2 H2O·2EtOH·2HN(SO2Ph)2 (1) were fortuitously obtained by repeated recrystallization of a sample of 2 from ethanol that was not kept completely dry. The crystal packing of 1 (triclinic, space group P1̄) is built up from isolated formula units displaying crystallographic inversion symmetry and pseudo D3d symmetry of the crown ring. The water molecules are located on opposite sides of the ring plane. Each H2O is connected to two OC atoms of the crown separated by a [CH2CH2OCH2CH2] segment (OWH···OC 210 and 208 pm, angles at H 169 and 164°), and accepts an O-H···Ow hydrogen bond from an ethanol molecule (H···OW 176 pm, angle 177°).
Crystal Structure and Magnetic Susceptibility of Ce8Pd24Sb
Authors: Gordon Robert A. , DiSalvo Francis J. 
Published: February 2015

Abstract
The ternary compound Ce8Pd24Sb is very close in composition to the intermediate valent binary CePd3. A single crystal study yielded a cubic cell with a = 8.461 (1)Å, Pm3̄m symmetry with wR2 = 0.0412 based on 1453 reflections (222 unique) and 16 parameters. This new structure type is composed of distorted perovskite and Cu3Au subcells arranged with the perovskite-like units centred on the corners of the cube. Fitting the magnetic susceptibility data above 100K to a Curie-Weiss expression yielded a Weiss constant of -15(3)K (antiferromagnetic) and an effective high temperature moment per cerium of 2.45(4)/μв indicating trivalent cerium. No ordering was observerd above 3K.
Mehrkernige Oxo-Vanadium- und Oxo-Molybdän-Komplexe mit dem Dianion der Quadratsäure als Brückenligand. Strukturen von [C(NH2)3]4[V2O2F4(C4O4)2]·4H2O, [nBu4N]4[V3O3F4(C4O4)3]·2H2O, [Et4N]3[Mo3O8F(C4O4)2], [Et4N]4[Mo4O10F6(C4O4)] und [ Et4N]3[Mo2O3Cl3(C4O4)2] / Polynuclear Complexes of Oxo-Vanadium and Oxo-Molybdenum with the Dianion of Squaric Acid as Bridging Ligand. Crystal Structures of [C(NH2)3]4[V2O2F4(C4O4)2]·4H2O, [nBu4N]4[V3O3F4(C4O4)3]·2H2O, [Et4N]3[Mo3O8F(C4O4)2], [Et4N]4[Mo4O10F6(C4O4)] and [ Et4N]3[Mo2O3Cl3(C4O4)2]
Authors: Hilbers Martin , Meiwald Margita , Mattes Rainer 
Published: February 2015

Abstract
Aqueous or methanolic solutions containing vanadium(IV), molybdenum(V) and molyb-denum(VI) oxo species and fluoride ions react with squaric acid to give the oligonuclear complexes [C(NH2)3]4[V2O2F4(C4O4)2]·4H2O (1), Cs4[V3O3F4(C4O4)3]·5H2O (2a), [nBu4N]4[V3O3F4(C4O4)3]·2H2O (2b), [Et4N]4[Mo4O10F6(C4O4)] (3a), [Et4N]4[Mo4O10Cl6(C4O4)] (3b), [Et4N]3[Mo3O8F(C4O4)2] (4) and [Et4N]3[Mo2O3Cl3(C4O4)2] (5). The structures of compounds 1, 2a, 2b, 3a, 4 and 5 have been determined by single crystal X-ray diffraction. The [V2O2F4(C4O4)2]4- ion in 1 consists of the planar V2O2F4 core with the vanadium sites bridged by two ,μ-1,2-squarato ligands. The unique cone-shaped [V3O3F4(C4O4)3]4- ion in 2a and 2b contains a central defect and severely distorted V3F4 cubane unit. Each vanadium atom bears a terminal oxo ligand; pairs of vanadium atoms are bridged by μ-1,2-squarato ligands. The [Mo4O10F6(C4O4)]4- ion in 3a consists of a squarate ion, which is coordinated to four metal centers. Pairs of metal atoms are bridged by μ(O)μ(F)-bridges. Two terminal oxo ligands and one terminal fluoro ligand complete the metal coordination. Oxo and fluoro ligands are partly disordered. The structure of the [Mo3O8F(C4O4)2]3- ion in 4 is related to the structure of [V3O3F4(C4O4)3]4- It consists of a defect Mo3(O3F) cubane unit. Two pairs of molybdenum atoms are bridged by μ-1,2-squarato ligands. Terminal oxo and dioxo groups complete the molybdenum coordination. The [Mo2O3Cl3(C4O4)2]3- ion in 5 exhibits a unique structure with a planar OClMo(μ-O)(μ-Cl)MoOCl core and a cis, cis-orientation of the oxygen ligands. Two, μ-1,2-squarato ligands bridge the molybdenum centers above and below the Mo2O3Cl3 plane.
Molekülstrukturen von Tautomeren des Benzoylaceton-benzoylhydrazons / Moleculare Structures of Tautomeric Forms of Benzoylacetone Benzoylhydrazone
Authors: Kraudelt Heide , Ludwig Eberhard , Schilde Uwe , Uhlemann Erhard 
Published: February 2015

Abstract
By crystallization from benzene two tautomeric forms of benzoylacetone benzoylhydra­ zone were isolated side by side. They were found to be the pyrazoline(III) and the enhydrazine(II) form. Crystal data: II: a = 9,247(2) Å , b = 9,953(2) Å , c = 16,112(4) Å , α = 81,79(1)°, β = 82,74(1)°, γ = 89,94(2)°; space group P1; Z = 4; R = 0,0584; 6197 unique reflexions; III; a = 17,357(6) Å, b = 21,190(7) Å , c = 7,908(5) Å; space group Pccn; Z=8; R = 0,0553; 1152 unique reflexions.
Intramolekular-stabilisierte Organogallium-und -indiumhalogenide. Ein erstes neutrales Indiumhydrid
Authors: Kümmel Christoph , Meller Anton , Noltemeyer Mathias 
Published: February 2015

Abstract
The intramolecularly coordinating 2-(dimethylaminomethyl)phenyl-(X) and 4-terr-butyl-2,6-bis(dimethylaminomethyl)phenyl-(Y) ligands were employed in the preparation of the gallium and indium halides: X2InI (B), XInI2 (1), X2InBr (2), XInBr2 (3), XIn(Et)I (4), XGaI2 (6) and YInI2 (7). The first neutral indium hydride X2InH (5) was made in situ from LiInH4 and 2. Z2InCl (8) (Z = 2-pyridyl-bis(trimethylsilyl)methyl), and X3Ga (C) were also synthesized. The compounds are characterized by N. M. R. (1H, 13C, 29Si and for 6 71Ga) and mass spectrometry and elemental analyses or peak matching M. S.. N. M. R.-data are discussed as well as the X-ray structure analyses provided for B, 2, 4, 5, 7 and 8.
Ein Cadmium-Kupfer-Phosphat mit einfach überkappten trigonalen CdO6-Prismen-Netzen: Cd1.35Cu1.65(PO4)2
Authors: Münchau S. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of Cd1.35Cu1.65(PO4)2 have been prepared by solid state reactions below the melting point of the starting compounds. The light green crystals crystallize with monoclinic symmetry, space group C5
2h-P21/c , a = 9.062(2), b = 11.669(2), c = 5.950(2) Å , β = 97.88(2)°, Z = 4. Cd1.35Cu1.65(PO4)2 shows relationship to the mineral graftonite. The crystal structure is characterized by nets of corner connected Cd2O12 polyhedra. One point position is statistically occupied by Cd2+ and Cu2+ ions.
Primäre und sekundäre Ethyl-und i-Propylsulfoniumsalze sowie Kristallstruktur von i-C3H7SH2
+SbF6
- [1]
Authors: Minkwitz Rolf , Lohmann Ulrike , Preut Hans 
Published: February 2015

Abstract
The synthesis of salts of the type RnSH3-n
+MF6
- (R = C2H5, i-C3H7; n = 1, 2; M = As, Sb) by protonation of the corresponding thiols and sulfides in the superacid systems HF/MF5 is reported. The salts have been characterized by vibrational and NMR spectroscopic methods. Isopropylsulfonium hexafluoroantimonate is the first known example of a sulfonium salt, for which a SH bond distance has been determined by a crystal structure analysis, i-C3H7SH2
+SbF6
- crystallizes in the monoclinic space group P21/m with a = 568.0(4), b = 801.1(6), c = 1019.7(8) pm, β = 82.63(6) °, with two formula units per unit cell.
(1,3-Diethyl-1,3-dihydro-4,5-dimethyl- 2H -imidazol-2-yliden)-diiodtellur(II) [1]
Authors: Kuhn Norbert , Kratz Thomas , Henkel Gerald 
Published: February 2015

Abstract
The carbene adduct 5 is formed from the 2-tel-luroimidazoline 4 and iodine. The X-ray structure analysis reveals a dimeric structure in the solid state.
Zur Kenntnis eines Barium-Lanthanoid-Aluminat-Zinkats: BaLuAlZn3O7 mit einem Anhang zu Ba2Er2Zn8O13/On a Barium Rare Earth Aluminate Zincate: BaLuAlZn3O7 with a Note on Ba2Er2Zn8O13
Authors: Rabbow Ch. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Reactions of BaCO3, ZnO, Lu2O3 and Al2O3 mixtures at temperatures up to 1500 °C led to small and colourless rods of BaLuAlZn3O7. The new compound crystallizes with hexagonal symmetry, space group C6v
4 -P63mc, a = 6.273, c =10.161 Å, Z = 2. In spite of small differences in the oxygen content BaLuAlZn3O7 is isotypic to Ba2Ln2Zn8O13. The crystal structure shows Zn2+ with tetrahedral, Lu3+ with octahedral and Ba2+ with anticuboctahedral coordination by O2-. It has been shown that parts of the [Zn3AlO7]5- network are fragments of the ZnO structure. In consequence one oxygen atom is fourfold coordinated by zinc/aluminium. The space group of Ba2Ln2Zn8O13 must be corrected to C6v
4 -P63mc.
1,4-Addition of Lithium Organyls to para-Quinols / Structure Determination of 2,6-Di-tert-butyl-4-hydroxy-4,5-diphenylcyclohex-2-en-1-one
Authors: Henes Gerhard , Rieker Anton , Neumayer Markus , Hiller Wolfgang 
Published: February 2015

Abstract
Addition of lithium organyls to sterically hindered para-quinols leads to 1,2-or 1,4-adducts. The 1,4-addition prevails, if the 4-substituents in the quinol and the organic group in the lithium organyl are large. Four 1,4-addition products (2-cyclohex-2-en-1-ones) are synthesized and their structures investigated by NMR spectroscopy. The aryl groups at C-4 and C-5 acquire equatorial positions, the alkyl group at C-6 is bisectional. These results are confirmed by X-ray analysis of 2,6-di-tert-butyl-4-hydroxy-4,5-diphenylcyclohex-2-en-1 -one, revealing a twist boat conformation of the cyclohexene ring.
Electrochemistry of Oxygenation Catalysts, Part 6 Electrosynthesis, Structure, Analytical and Electrochemical Properties of Monomeric [CoIII(salen)(DMF)2]+ X- Salts (X = PF6, ClO4)
Authors: Gollas Bernhard , Speiser Bernd , Stahl Hartmut , Sieglen Jürgen , Strähle Joachim 
Published: February 2015

Abstract
[CoIII(salen)(DMF)2]+ X- salts [X = PF6, ClO4; salen = bis(salicyliden)ethylendiiminato; DMF = dimethylformamide] have been synthesized by electrochemical and chemical (air) oxidation of CoII(salen). Their monomeric structure with two DMF molecules in the axial positions in both the solid state and DMF solution is shown by X-ray crystal structure analysis, thermal analysis, mass spectroscopy, and 1H and 13C NMR spectroscopy. The electrochemical reduction of the [CoIII(salen)(DMF)2]+ cation is investigated by cyclic voltammetry and com­ pared to the oxidation of the neutral CoII(salen). The redox reaction connecting the cobalt(II) and the cobalt(III) species appears to be a quasi-reversible electron transfer. These properties make the [CoIII(salen)(DMF)2]+ X-salts starting materials for the analysis of the interaction of basic substrates with cobalt(III) species in the context of the biomimetic oxygenation reactions catalyzed by such complexes.
Reduktion cyclischer Maleinsäurederivate/Reduction of Cyclic Maleic Acid Derivatives
Authors: Stachel Hans-Dietrich , Schachtner Josef , Seidel Josef 
Published: February 2015

Abstract
A series of potentially cytotoxic α,β-unsaturated γ -hydroxy-butyrolactones, -lactams and -thiolactones has been synthesized via regioselective hydride reduction of the appropriate maleic acid anhydrides, imides and thioanhydrides. By this means a straightforward access to naturally occurring antibiotic narthigenine 2, its hitherto unknown thio-analogue 5b and higher substituted derivatives and analogues of 2 is presented.
Zur Kristallstruktur von ( Cu ,Mn )3,66Mo3O12/On the Crystal Structure of (Cu ,Mn)3,66Mo3O12
Authors: Sedello O. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of (Cu,Mn)3.66Mo3O12 have been prepared in sealed copper tubes. X-ray investiga­tions lead to orthorhombic symmetry, space group D2h
16-Pnma, a = 5.1541(9), b = 10.788(2), c = 18.114(3)) Å , Z = 4. (Cu,Mn)3.66Mo3O12 is iso­typic to NaCo2.31Mo3O12 and (Cu,Co)3.75Mo3O12 with split positions for two of the metals.
Zur Kenntnis von Ba6Pr2Co4O15 und Ba5SrPr2Co4O15 On Ba6Pr2Co4O15 and Ba5SrPr2Co4O15
Authors: Müller-Buschbaum Hk. , Ünsal H. 
Published: February 2015

Abstract
Ba6Pr2Co4O15 (I) and Ba5SrPr2Co4O15 (II) have been prepared by high temperature CO2-LASER techniques. Both compounds crystallize with hexagonal symmetry, space group C6v
4 P63mc, (I): a = 11.814(1), c = 7.100(2) Å ; (II): a = 11.646(1), c = 6.8602 Å , Z = 2. It is remarkable that the strongly reducing Pr3+ can coexist with the more oxidizing Co3+.
Subsolidus Phasenbeziehungen in den Systemen MgGa2S4-MgCr2S4 und MgGa2S4-MgIn2S4 / Subsolidus Phase Relationships in the Systems MgGa2S4-MgCr2S4 and MgGa2S4-MgIn2S4
Authors: Haeuseler H. , Cordes W. 
Published: February 2015

Abstract
The title systems have been investigated on samples quenched at 700, 800 and 1000 °C. Five new compounds have been obtained and characterized by X-ray powder diffraction: Spinel type MgGa0.2Cr1.8S4, two compounds crystallizing in the olivine structure, MgGaCrS4 and MgGaInS4, and two layered materials, MgGa1.5Cr0.5S4 and MgGa1.5In0.5S4. Lattice para­ meters and phase widths of the compounds are given.
Synthese and Krystalchemie der β-Form eines gemischten Zinkorthoarsenats: Zn2,28Mg0,72(AsO4)2 / Synthesis and Crystal Chemistry of the β-Form of a Mixed Zinc Orthoarsenate: Zn2.28Mg0.72(AsO4)2
Authors: Frerichs D. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of Zn2.28Mg0.72(AsO4)2 have been prepared by CO2 LASER techniques. The compound crystallizes with monoclinic symmetry space group C5
2h-P21/n and the lattice parameters a = 5.292(2), b = 8.450(3), c = 7.737(3) Å , β = 96.33(3)°, Z = 2. Zn2.28Mg0.72(AsO4)2 is isotypic to β-Zn3(AsO4)2. The formation of the β-Zn3(AsO4)2 struc­ture instead of other possible orthoarsenates is discussed.
K+ auf einer mit Ca2+ unterbesetzten Punktlage in Ca3( VO4)2: Ein Beitrag über KCa10V7O28 / K+ at an Deficient Ca2+ Point Position in Ca3( VO4) 2: On KCa10V7O28
Authors: Schrandt O. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of K Ca10V7O28 have been prepared by crystallization from flux. The yellow-green crystals show rhombohedral symmetry (trigonal space group C6
3V-R3c, a = 10.830(1), c = 37.860(1) Å , Z = 6). The differences of the crystal chemistry are discussed with respect to the isotypic compound Ca3(VO4)2. K+ replaces exclusively Ca2+ ions at one deficient point position.
Darstellung und Lithiumteilstruktur von Lithiumnitridtribromid, Li6NBr3 und Lithiumnitridtriiodid, Li6NI3 / Preparation and Lithium Sublattice of Lithium Nitride Trihalides, Li6NHal3 (Hal = Br, I)
Authors: Marx Rupert , Mayer Hans Michael 
Published: February 2015

Abstract
Single phase Li6NBr3 was prepared by the reaction of Li3N and dry, OH-free LiBr at 450°C. It is the most bromide rich compound in the quasi binary system Li3-2xN1-xBrx. The crystal structures of Li6NBr3 and of isotypic Li6NI3, have been redetermined from neutron powder diffraction data. Both compounds crystallize in the cubic space group Fm3m (No. 225), a(Li6NBr3) = 894.18(7), a(Li6NI3) = 951.7(1) pm with 4 formula units per unit cell. The anion sublattice comprises a rock salt like arrangement of N with one of the three halogen atoms (Hal1), with the remaining halogen atoms in the resulting N4Hal4 cubes. The structure may be regarded as an ordered AX3 variation of a body-centered packing. The lithium atoms are disordered over the 96 (distorted) tetrahedral NX3 holes in such a way that of the four neighbouring, face-sharing NBr3 tetrahedra along an N-H all-connection line only one is occupied. The resulting Li coordination polyhedron around N (and Hal1) is a distorted octahedron with 6 equidistant Li atoms. Hal2 is surrounded by 12 Li atoms. The Li6NHal3 structure may be regarded as an anti-form of the cryolite structure.
Darstellung, 11B-, 13C-, 1H-NMR- und Schwingungsspektren von μ-Methylen-bis-hexahydro-closo-hexaborat, [B6H6(CH2)B6H6]2-, und Kristallstruktur von [As(C6H5)4]2[B6H6(CH2)B6H6]· ½(CH3)2CO / Preparation, 11B- , 13C-, 1H NMR and Vibrational Spectra of μ-Methylene-bis-hexahydro-doso-hexaborate, [B6H6(CH2)B6H6]2- and Crystal Structure of [As(C6H5)4]2[B6H6(CH2)B6H6]· ½(CH3)2CO
Authors: Lübbe W. , Preetz W. 
Published: February 2015

Abstract
By reaction of [B6H6]2- with dibromomethane in acetonitrile μ-Methylene-bis-hexahydro-closo-hexaborate, [B6H6(CH2)B6H6]2-, is formed which can be separated from excess [B6H6]2- by ion exchange chromatography on diethylaminoethyl cellulose. The crystal structure of [As(C6H5)4]2[B6H6(C H2)B6H6] · (CH3)2CO has been determined by single crystal X-ray analysis: triclinic, space group P1 with a = 10.779(2), b = 10.8003(12) and c = 23.077(3) Å, a = 99.147(10), β = 91.569(13) and y = 91.288(11)°. The 11B NMR spectrum reveals the features of a monosubstituted octahedral B6 cage. The 13C NMR spectrum exhibits a multiplet at -5.44 ppm. In the 1H NM R spectrum a singlet of the methylene protons at 0.23 ppm and two singlets at 1.97 and -4.52 ppm of the BH fragments are observed. The IR and Raman spectra exhibit strong CH stretching bands between 2873 and 2762 cm-1, BH stretching bands between 2443 and 2403 cm-1, and a BC stretching vibration at 1138 cm-1 in the Raman spectrum.
Circular Dichroism Studies on New Optically Active 1,5-Benzodiazepine Derivatives
Authors: Khan Khalid Mohammed , Malik Farnaz , Hasan Mashooda , Perveen Shahnaz , Frelek Jodwiga , Snatzke Günther , Voelter Wolfgang 
Published: February 2015

Abstract
From thirty three new optically active 1,5-benzodiazepine derivatives the UV and CD data are reported and the bands discussed related to corresponding electronic transitions respectively stereochemical features.
Polynuclear Gold(I) Complexes of Mercaptocarboxylic Acids
Authors: Sladek Alexander , Schneider Wolfgang , Angermaier Klaus , Bauer Andreas , Schmidbaur Hubert 
Published: February 2015

Abstract
In a search for air-stable and water-soluble mercapto compounds of gold with a high gold content, benzylthiol, a-m ercapto-acetic acid, β-mercapto-propionic acid, and thiosalicylic acid were converted into aurated sulfonium salts by treatment with reagents of the type [(R3P)Au]3O+ BF4
- or [(R3)P)Au]+ BF4
-. - BzSH served as a mono-functional model thiol, which was converted into BzS[Au(PMe3)]2
+ BF4
- (1). The small tertiary phosphine was chosen in order to minimize steric effects. In the crystal the cations are associated into centrosymmetrical dimers through short Au-A u contacts (auriophilicity). - The two carboxylic acids with thiol functions, HSCH2COOH and HSCH2CH2COOH, gave triply aurated species of the type {[(Ph3P)Au]2S(CH2)nCOOAu(PPh3)}+ BF4
- (2: n = 2, 3; n = 3). The crystal structure analysis of the representative compound 2 showed again the presence of centrosymmetrical cation dimers with geometrical details of the sulfonium part of the molecules very similar to those of the reference compound 1. In addition, the carboxyl groups in 2 and 3 bear a (phosphine)gold unit mono-hapto bound at one of the oxygen atoms. -2-HS-C6H4-COOH was converted into a sulfonium salt {[(Ph3P)Au]2S-C6H4-COOH}+ BF4
- (4), which crystallizes free of solvent from dry dichloromethane, and as a monohydrate with one mole of dichloromethane (4a = 4 H2O-CH2CI2) from hydrous CH2CI2. In the solvent-free crystalline phase (4) the cations are associated into dimers with the usual intermolecular double A u-A u contacts, but in 4a there are monomeric cations with the water molecule hydrogen-bonded to the carboxylic acid function
Phosphonio-substituierte 1,3-Diphosphanaph thaline aus der a,o-Kondensation von Phosphonium-benzyliden / Phosphonio-Substituted 1,3-Diphosphanaphthalenes from the α.o-Condensation of Phosphonium-benzylides
Authors: Jochem Georg , Schmidpeter Alfred 
Published: February 2015

Abstract
Triphenylphosphonium 1-trimethylsilylbenzylides 1 react with the bis(dichlorophosphino)- substituted ylide 2 both at their 1- and ortho-position to yield 1,3-diphosphatetraline derivatives 4 containing two ylide and PCI units each as alternating ring members. The two PCI groups differ decisively in their spontaneous dissociation in a polar medium, as well as in their oxidation by elemental sulfur. With gallium trichloride dicationic 1,3-diphosphanaphthalenes (1,3-benzodiphosphinines) are formed, in which both phosphorus ring members achieve twocoordination and which represent a novel π10 system
Hochdrucksynthese und Kristallstruktur von Nd4Au2O9 und Gd4Au2O9 / High Pressure Synthesis and Crystal Structure of Nd4Au2O9 and Gd4Au2O9
Authors: Steiner Claudia , Andratschke Martina , Range Klaus-Jürgen 
Published: February 2015

Abstract
Single crystals of Nd4Au2O9 and Gd4Au2O9 have been prepared by oxidizing mixtures of gold metal and Nd2O3 or Gd2O3, rsp., with KO2 under high-pressure high-temperature conditions (40 kbar, 1200°C) in a modified Belt-type apparatus. The X-ray structure analyses have been carried out on twinned crystals. The compounds crystallize in the orthorhombic space group Pbcn (Nd4Au,O9: a = 11.938(7) ,b = 6.126(2),c = 11.928(3) A ,Z = 4,1 = 0.0443; Gd4Au2O9: a = 11.922(2), 6 = 6.1242(7), c = 11.917(2) A, Z = 4. R1 =0.0232).
The title compounds are isostructural with La4Au2O9. Their structure comprises isolated square-planar AuO4 groups, stacked along [010] to form a columnar structure. The Au-Au distance along the columnar direction is 3.10 Å. Structural relations to Bi2CuO4 und (Nd, Pr)2AuO5 are discussed
Zwei monokline Kupfer-Oxovanadate des Magnesiums mit geordneter Metallverteilung: m-Mg2CuV2O8 und MgCu2V2O8. Ein Beitrag zur Dimorphie von Mg2CuV2O8 / Two Monoclinic Copper Oxovanadates of Magnesium Showing Ordered Metal Distribution: m-Mg2CuV2O8 and MgCu2V2O8. A Contribution on Dimorphism of Mg2CuV2O8
Authors: Schrandt O. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of ra-Mg2CuV2O8 (I) and MgCu2V2O8 (II) have been prepared by solid state reactions. The orange (I) and dark red (II) crystals show monoclinic symmetry, space group C5
2h -P21/c, (I): a = 6.167(3), b = 8.172(5), c = 6.400(8) Å, β = 116.22(3)°, Z = 2; (II): a = 6.453(1), b = 8.342(2), c = 11.517(2)Å,β 90.44(2), Z = 4. Both compounds show ordered metal distributions and vanadium in tetrahedral coordination by oxygen. (I) is characterized by elongated CuO6 octahedra and (II) by trigonal CuO5 bipyramids. m-Mg2CuV2O8 is the low temperature form of the formerly investigated orthorhombic o-Mg2CuV2O8. Calculations of the Coulomb parts of the lattice energy of the two crystal forms are discussed