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141Author    Reinhard Nesper, Jan CurdaRequires cookie*
 Title    das erste Chalcogenid mit zweiwertigem Aluminium Al 7 Te 10 — the First Chalcogenide of Divalent Aluminum  
 Abstract    Al 7 Te 10 is prepared from a melt of the elements in stoichiometric amounts in a corundum crucible contained in a sealed quartz ampoule. The ruby red cube shaped crystals are stable below 840 K. The structure of Al 7 Te, 0 (R32-D^; a = 1439.5 pm, c = 1793.2 pm, Z = 6, R = 0.03) is a distorted defect variant of a tetrahedral arrangement of the 4H-polytype. The central unit, a double barrelane [Te 4 Al 4 —Al 4 Te 4 ], contains an Al —Al bond of 260 pm, which is somewhat longer (n = 0.83) than an expected single bond (250 pm, n = 1). This homopolar bond disturbs the electrostatically favorable (Al—Te—)" sequence in the structure which is compensated by the occurrence of four-membered Al 2 Te 2 rings. Al 7 Te 10 is a Zintl phase according to l/2{[Al 2+ -Al 2+ ][Al 3+ ] !2 [Te 2 ~] 20 } and exhibits semiconducting and diamagnetic behaviour. 
  Reference    Z. Naturforsch. 42b, 557 (1987); eingegangen am 9. Dezember 1986 
  Published    1987 
  Keywords    Synthesis, Crystal Structure, Divalent Aluminum, Aluminum-Aluminum Bonds 
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 Identifier    ZNB-1987-42b-0557 
 Volume    42 
142Author    Sigurd Elz, Martin Dräger, Hans-Joachim Sattler, Walter SchunackRequires cookie*
 Title    Synthese und Absolute Konfiguration von (+)-l-Amino-2-propanthiol-HCl Synthesis and Absolute Configuration of ( + )-l-Amino-2-propanethiol * HCl  
  Reference    Z. Naturforsch. 42b, 617—622 (1987); eingegangen am 22. August 1986 
  Published    1987 
  Keywords    Amino-2-propanethiol, Crystal Structure, Diastereomers, Impromidine, Thiazolidines 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0617.pdf 
 Identifier    ZNB-1987-42b-0617 
 Volume    42 
143Author    K. Brodersen, H. Procher, Hans-U HummelRequires cookie*
 Title    Synthesis and Crystal Structure of PbZn(NCS) 4  
 Abstract    PbZn(NCS) 4 is obtained from the binary compounds Pb(SCN) 2 and Zn(NCS) 2 with traces of water in an ultra-sound bath. The space group of the complex is Pn2[a (standard: Pna2,) with Z = 4. The structure consists of as-connected octahedra ^.[PbS 2 S 4/2 ] forming two-dimensional layers. All SCN-groups are bound to Zn 2+ via their N atoms. The resulting ZnN 4 tetrahedra are arranged in the cavities formed by the PbS 6 octahedra. 
  Reference    Z. Naturforsch. 42b, 679—681 (1987); eingegangen am 6. November 1986/27. Januar 1987 
  Published    1987 
  Keywords    Lead(II) Tetraisothiocyanatozincate, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0679.pdf 
 Identifier    ZNB-1987-42b-0679 
 Volume    42 
144Author    R. Minkwitz, H. Prenzel, H. PritzkowRequires cookie*
 Title    Beiträge zur Chemie der Schwefel-Halogenide, 17 [1] Dimethyl(methylthio)-und Dimethyl(phenylthio)sulfonium-Salze Contributions to the Chemistry of Sulfur Halides, 17 [1] Dimethyl(methylthio)-and Dimethyl(phenylthio)sulfonium Salts  
 Abstract    IR, Raman and NMR spectroscopic studies of dimethyl(methylthio)-and dimethyl(phenyl-thio)sulfonium salts (CH 3) 2 SSR + A~ (R -CH 3 , C 6 H 5 ; A = AsF 6 ~, SbCl 6 ~) are reported. The crystal structure of (CH 3) 2 SSCH 3 + AsF 6 ~ shows for the cation a conformation different from that reported for the hexachloroantimonate. 
  Reference    Z. Naturforsch. 42b, 750—755 (1987); eingegangen am 5. Dezember 1986/4. Februar 1987 
  Published    1987 
  Keywords    Thiosulfonium Salts, NMR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0750.pdf 
 Identifier    ZNB-1987-42b-0750 
 Volume    42 
145Author    Z. NaturforschRequires cookie*
 Title    Darstellung und Kristallstrukturen von C a^ ^ N und Sr4In2N  
 Abstract    The new compounds Ca4In2N and Sr4In2N crystallize in the tetragonal system (space group 14,/am d, No. 141). In and Ca together form a rocksalt structure. All octahedral holes, which are built by Ca only, are occupied by nitrogen. The In atom s form In —In zig-zag-chains; the In —In bond lengths are 316.4 pm (Ca com pound) and 332.0 
  Reference    Z. Naturforsch. 42b, 825—827 (1987); eingegangen am 1. April 1987 
  Published    1987 
  Keywords    Crystal Structure, X-Ray, Alkaline E arth Indium Nitrides 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0825.pdf 
 Identifier    ZNB-1987-42b-0825 
 Volume    42 
146Author    Brigitte Eisenmann, Roland ZaglerRequires cookie*
 Title    [Ba(en)4]2As4Te6, das erste Telluridoarsenat(II) [B a(en)4 ]2 As4Te6, the First Telluridoarsenate(II)  
 Abstract    The new com pound [B a(en)4]2A s4T e6 has been prepared by reaction of appropriate mixtures of the elem en ts in dry ethylenediam ine. It crystallizes in the m onoclinic system , space group P 2,/« with a = 1776.0(6) pm, b = 1459.9(6) pm, c = 1000.0(4) pm, ß = 101.8(1)°. The A s4T e64~ anion forms a six-m em bered ring A s4T e2 o f chair conform ation, in which two A s —A s groups are bridged by Te atom s. A t each A s atom a further exocyclic Te neighbour is bonded in the equatorial position. The Ba2+ cation is eight-coordinated by the bidentate ethylenediam ine ligand. 
  Reference    Z. Naturforsch. 42b, 1079—1082 (1987); eingegangen am 1. Juni 1987 
  Published    1987 
  Keywords    Telluridoarsenate, Semimetal A nion, Crystal Structure Preparation 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-1079.pdf 
 Identifier    ZNB-1987-42b-1079 
 Volume    42 
147Author    Kay Jansen, Kurt DehnickeRequires cookie*
 Title    Synthese und Kristallstruktur von (PPh4)2[Mo2(02C—Ph)4Cl4] * 2 CH2C12, einem Komplex mit Mo=Mo-Bindung Synthesis and Crystal Structure of (PPh4 )2 [Mo2 (0 2 C —Ph)4 Cl4] -2 CH 2 C12, a Complex with M o=M o Bonding  
 Abstract    The title com pound has been prepared from (PPh4)2[M o2(0 2C —Ph)4Cl2] and CC14 in C H 2C12 solution as moisture sensitive crystals, which are black in reflexion and yellow in transmission. (PPh4)2[M o2(0 2C —Ph)4Cl4] • 2 C H 2C12 was characterized by a X-ray crystal structure determ ination (7873 observed independent reflexions, R = 0.048). It crystallizes in the space group P 1 with one formula unit in the unit cell; the lattice constants are a = 1186.4; b = 1404.0; c = 1451.0 pm; a = 61.98°; ß = 78.91°; y = 78.26°. The structure consists o f PPh4® ions, C H 2C12 m olecules and centrosym m etric anions [M o2(0 2C —Ph)4Cl4]20 containing a molybdenum d3d3 unit with a relatively long M o = M o bond o f 249.6 pm. The M o= M o group is spanned in a chelate manner by four O atoms of two benzoate groups and by two further single O atoms o f two further benzoate groups. Two terminal Cl atom s on each Mo atom com plete the pentagonal bipyramidal coordination spheres about the Mo atoms. 
  Reference    Z. Naturforsch. 42b, 1097—1101 (1987); eingegangen am 2. März 1987 
  Published    1987 
  Keywords    Tetrabenzoato-tetrachloro-dim olybdate, Synthesis, IR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-1097.pdf 
 Identifier    ZNB-1987-42b-1097 
 Volume    42 
148Author    D. Ietm Ar Stalke, Nayla Keweloh, Uwe Klingebiel, M. Atthias, N. Oltem Eyer, G. Eorge, M. SheldrickRequires cookie*
 Title    Von lithiierten Aminofluorsilanen zu mono-und dimeren Iminosilanen From Lithiated Aminofluorosilanes to Mono-and Dimeric Iminosilanes  
 Abstract    Depending on the solvent and the bulkiness of the substituents, lithiated aminofluorosilanes are dimers, monomers, or LiF-adducts of iminosilanes. In the crystal structure of the dimeric lithium derivative of di-terr-butyl(/m-butylamino)fluorosilane, each lithium atom is coordinated by one fluorine and two nitrogen atoms. LiF-elimination leads — if sterically possible — to dimerisation. The limits of dimerisation are reached with the dimer diisopropyl(trwm-butylphenyl-imino)silane, for which the crystal structure analysis shows severe steric distortions. Fluorine-chlorine-exchange occurs in reactions of lithiated (tri-fm-butylphenylimino)fluorosilanes with Me3SiCl. Iminosilanes are obtained by thermal LiCl-elimination from the resulting salts. 
  Reference    Z. Naturforsch. 42b, 1237—1244 (1987); eingegangen am 4. Mai/25. Juni 1987 
  Published    1987 
  Keywords    Aminofluorosilanes, Lithium Salts, Cyclisation, Iminosilanes, Crystal Structure 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-1237.pdf 
 Identifier    ZNB-1987-42b-1237 
 Volume    42 
149Author    Peter Schreiber, Karl Wieghardt, Ulrich Flörke, Hans-Jürgen HauptRequires cookie*
 Title    Synthese von Wolframkomplexen  
 Abstract    des Typs [ L W (C O) 3X ] + (X = H , F, Br; L = 1,4,7-Triazacyclononan). Die Kristallstrukturen von [L W (C O) 3B r]B F 4 und [L W (C O) 3H ] 2[W O C l5] • h 2o Synthesis o f Tungsten Complexes o f the Type [L W (C O)3X ] + (X = H, F, Br; L = 1.4,7-triazacyclononane). The Crystal Structures o f [L W (C O)3Br]BF4 and [L W (C O)3H ]2[W O C l5] • H 20 The reaction of LW (C O), (L = 1,4,7-triazacyclononane) with Br2 in CHCl, yields orange [L W (C O)3Br](Br3) which was converted to its BF4~ salt. [L W (C O)3Br]BF4 crystallizes in the triclinic space group P 1 (a = 8.273(3), b = 8.628(2), c = 13.034(3) Ä , a = 80.10(2), ß = 72.69(2). y = 61.14(2)°, Z = 2); it consists of cations [L W (C O)3Br] + , with seven-coordinate W atoms, and BF4 -anions. The corresponding salt [L W (C O)3F](PFft) was obtained from L W (C O)3 with 20% aqueous HF in the presence of air and addition of NaPF6. The analogous reaction with 37% aqueous HC1 affords green crystals of [L W (C O)3H ]2[W OCl5] • H 20 which crystallize in the mono­ clinic space group P2,/c (a = 12.234(4), b = 18.853(7), c = 14.609(5) Ä . ß = 105.65(3)°, Z — 4). The W atoms in the [L W (C O)3H ]+ cations are seven-coordinate; the six-coordinate [W OCl5]: anions are not disordered. The W = 0 distance is short (1.72(1) Ä), the mean equatorial W —Cl distance is 2.390 Ä whereas the W —Cl bond distance trans to the W = 0 group is 2.562(5) Ä. 
  Reference    Z. Naturforsch. 42b, 1391 (1987); eingegangen am 2. Juli 1987 
  Published    1987 
  Keywords    Tungsten Complexes, X-Ray, Crystal Structure 
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 Identifier    ZNB-1987-42b-1391 
 Volume    42 
150Author    Brigitte Eisenmann, Jürgen KleinRequires cookie*
 Title    Eine Zintl-Phase mit isolierten SnSb 4 8 -Anionen: Na 8 SnSb 4 A Zintl Phase with Isolated SnSb/ -Anions, Na 8 SnSb 4  
  Reference    (Z. Naturforsch. 43b, 69—71 [1988]; eingegangen am 10. September 1987) 
  Published    1988 
  Keywords    Crystal Structure, Semimetallic Anions, Zintl Phases 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0069.pdf 
 Identifier    ZNB-1988-43b-0069 
 Volume    43 
151Author    Christian RoblRequires cookie*
 Title    Erdalkaliquadratate, VI [1] SrC 4 0 4 -3H 2 0, Typ III Alkaline-earth Squarates, VI [1] SrC 4 0 4 -3H 2 0, Type III  
 Abstract    SrC 4 0 4 -3H 2 0, type III, was obtained in an aqueous silica gel besides crystals of SrC 4 0 4 • 3 H 2 0, type I. X-ray crystal structure analysis showed close relationship to BaC 4 0 4 -3H 2 0, but no iso-typism. Sr 2+ is coordinated by four water molecules and four oxygen atoms of the squarate dianion. The connection of Sr 2+ with C 4 0 4 2 leads to layers. The geometry of C 4 0 4 2 is typical for delocalized jr-systems. The O squarate atoms are not equally bound to Sr 2+ . One O squarate atom (0(4)) is bound to two Sr 2+ , two (O(l), 0(2)) are bound to one Sr 2+ , respectively, and the fourth O squaraIe atom (0(3)) shows no bonding contact to Sr 2+ . These differences are compensated for by inter-molecular hydrogen bonds which involve 0(3) three times, O(l) and 0(2) once each, but not 0(4). 
  Reference    (Z. Naturforsch. 43b, 99—103 [1988]; eingegangen am 21. September 1987) 
  Published    1988 
  Keywords    Strontium Squarate Type III, Preparation, Crystal Structure, Hydrogen Bonding 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0099.pdf 
 Identifier    ZNB-1988-43b-0099 
 Volume    43 
152Author    Eberhard Böhm, Kurt Dehnicke, Johannes Beck, Wolfgang Hiller, Joachim Strähle, Andreas Maurer, Dieter FenskeRequires cookie*
 Title    Die Kristallstrukturen von Ph 3 PNPh, [Ph 3 PN(H)Ph][AuI 2 ] und von 2,3-Bis(triphenylphosphoranimino)maIeinsäure-N-methyIimid The Crystal Structures of Ph 3 PNPh, [Ph 3 PN(H)Ph][AuI 2 ] and of 2,3-Bis(triphenylphosphoranimino)maleic Acid-N-methylimide  
 Abstract    [Ph 3 PN(H)Ph][AuI 2 ] (2) is formed by the reaction of Aul with N-Phenyl-iminotriphenylphos-phorane, Ph 3 PNPh in a toluene suspension. 2,3-Bis(triphenylphosphinimino)maleic acid-N-methylimide (3) has been prepared by the Staudinger reaction of 2,3-bis(azido)maleic acid-N-methylimide with PPh, in THF solution in the form of red crystals. Crystal structure determina-tions of three iminophosphoranes were carried out by X-ray methods. Ph 3 PNPh (1): space group P2]/c, Z = 4, 2176 independent observed reflexions, R = 0.057. Lattice dimensions (-30 °C): a = 1126.4, b = 1148.6, c = 1476.0 pm; ß = 97.21°. The compound forms monomeric molecules with P=N = 160.2 pm and an PNC angle of 130.4°. [Ph 3 PN(H)Ph][AuP] (2): space group PI, Z = 2, 1780 independent observed reflexions, R = 0.057. Lattice dimensions (18 °C); a = 824.9, b = 1022, c = 1476.2 pm; a = 89.23°, ß = 87.41°, y = 85.65°. The compound consists of ions [Ph 3 PN(H)Ph]® with P=N = 162.4 pm and PNC = 129.3°, and anions [Aul 2 ] e with Au-I = 261.9 and 259.3 pm, IAuI = 176.8°. (PhiP) 2 N-,C 4 0 2 (NMe) (3): space group PI, Z = 2, 4972 independent observed reflexions, R = 0.050. Lattice dimensions (-90 °C): a = 904.7, b = 993.8, c = 2017.4 pm; a = 101.55°, ß = 96.39°, y — 105.81°. The compound forms monomeric molecules with ^«-conformation of the two NPPh 3 groups. Bond lengths: P=N = 157.1; 155.3 pm, bond angles: PNC = 133°; 136°. 
  Reference    Z. Naturforsch. 43b, 138—144 (1988); eingegangen am 2. September/6. November 1987 
  Published    1988 
  Keywords    Iminophosphoranes, Synthesis, IR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0138.pdf 
 Identifier    ZNB-1988-43b-0138 
 Volume    43 
153Author    Karl-Friedrich Tebbe, Norbert KraußRequires cookie*
 Title    Untersuchungen an Polypseudohalogeniden, V[l] Darstellung und Kristallstruktur des Kaliumdicyanoiodats(I), K[I(CN) 2 ] Studies on the Polypseudohalides, V [1] Preparation and Crystal Structure of K[I(CN) 2 ]  
 Abstract    The new compound K[I(CN) 2 ] can be prepared by addition of one formula unit of iodine to a concentrated aqueous solution of two mole equivalents of potassium cyanide. It crystallizes in the monoclinic space group C2Im with a = 736.4, b = 451.4, c = 908.0 pm.ß = 92.56° and Z = 2. The crystal structure has been refined to R f = 0.020 for 301 observed reflections. The structure may be described as a layer-like package of cations K + and trihalide-analogous anions [I(CN) 2 ]~. The anions are strictly linear at the I atoms (symmetry 2/m) and nearly linear at the C atoms with <p(I-C-N) = 178.6° and d(I-C) = 229.8, d(C-N) = 112.9 pm. The cation is surrounded by a slightly distorted octahedron of nitrogen atoms with d(K---N) = 284.8,292.6 pm. 
  Reference    Z. Naturforsch. 43b, 149—152 (1988); eingegangen am 27. Mai/26. Oktober 1987 
  Published    1988 
  Keywords    gewidmet Potassiumdicyanoiodate, Cyanogen Compound, Polypseudohalide, Pseudotrihalide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0149.pdf 
 Identifier    ZNB-1988-43b-0149 
 Volume    43 
154Author    M. '., Y., M. =. Zn, Cd, =. Al, Ga, In, X. =. Se, Te, Y. =. Cl, Klaus-Jürgen Range, Karin HandrickRequires cookie*
 Title    Synthese und Hochdruckverhalten quaternärer Chalkogenidhalogenide M 2 M X 3 Y (M = Zn, Cd; M = AI, Ga, In; X = Se, Te; Y = CI, Br, I) Synthesis and High-Pressure Behaviour of Quaternary Chalcogenide Halides M  
 Abstract    Quaternary chalcogenide halides M 2 M'X 3 Y (M = Zn, Cd; M' = Al, Ga. In; X = Se. Te; Y = Cl. Br, I) can be synthesized by heating stoichiometric amounts of the binary components MX. MY 2 , and M 2 X 3 in evacuated sealed quartz ampoules. In the case of aluminium and gallium compounds, a mixture of the M' and X elements rather than the binary compounds has been used. The products are typical tetrahedral compounds, crystallizing with either the defect wurtzite-type or the defect zinc-blende-type structure. At 25 kbar. and 1400 °C, Cd 2 InSe 3 Cl. Cd 2 InSe 3 Br, and Cd 2 InSe 3 I transform from the defect wurtzite-type structure to quenchable high-pressure phases with defect NaCl-type structure. The retransformation to the ambient-pressure phases proceeds via intermediates having the defect zinc-blende-type structure. Some aspects of the apparent non-stoichiometry in the high-pressure phases are discussed. 
  Reference    Z. Naturforsch. 43b, 153—158 (1988); eingegangen am 2. November 1987 
  Published    1988 
  Keywords    Quaternary Chalcogenide Halides, Synthesis, Crystal Structure High-Pressure Reactions 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0153.pdf 
 Identifier    ZNB-1988-43b-0153 
 Volume    43 
155Author    Peter Stolz, Siegfried PohlRequires cookie*
 Title    Iodomanganate(II): Darstellung und Kristallstrukturen von (Ph 4 P)MnI 3 L, MnI 2 L 3 , [MnIL 5 ]I 3 und [MnL 6 ](I 3 ) 2 (L = Tetrahydrofuran) Iodomanganates(II): Synthesis and Crystal Structures of (Ph 4 P)MnI 3 L, MnI 2 L 3 , [MnIL 5 ]I 3 and [MnL 6 ](I 3 ) 2  
 Abstract    The compounds (Ph 4 P)MnI 3 L (1), MnI 2 L 3 (2), [MnIL 5 ]I 3 (3), and [MnL A ](I 3) 2 (4) (L = C 4 H H O, thf) were prepared in thf solution and their structures determined from single crystal X-ray diffraction data. 1 crystallizes in the monoclinic space group C2/c with a = 1743.6(1), b — 1985.8(1), c = 1806.7(1) pm, ß = 98.74(1)°, Z = 8. The structure of 1 exhibits tetrahedral anions. The Mn—I distance was found to be 268.0 pm (mean). 2: monoclinic, C2/c with a = 1252.3(2), b = 1255.0(3), c = 1271.8(3) pm ß = 113.88(2)°, Z = 4. The characteristic feature of the structure of 2 is the existence of neutral MnI 2 L 3 molecules with a distorted trigonal bipyramidal geometry and the iodine atoms in equatorial positions (Mn —I: 271.1 pm). The compound crystallizes from a solution of Mnl 2 in tetrahydrofuran. 3: monoclinic, C2/c with a = 1695.3(1), b = 1123.1(1), c = 1646.2(1) pm, ß = 96.91(1)°, Z = 4. The preparation of 3 from 2 and iodine yields octahedral MnIL, + cations (Mn —I: 278.8 pm) and triiodide anions. 4: monoclinic, P2,//z with a = 1005.5(1). b = 1056.8(1), c -1835.6(2) pm, ß = 91.16(1)°, Z -2. 4 is prepared from 3 and iodine in thf solution, and shows octahedral MnL 6 2+ cations and triiodide anions. 
  Reference    Z. Naturforsch. 43b, 175—181 (1988); eingegangen am 19. August/20. Oktober 1987 
  Published    1988 
  Keywords    Iodo-Complexes of Manganese(II), Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0175.pdf 
 Identifier    ZNB-1988-43b-0175 
 Volume    43 
156Author    W. S. SheldrickRequires cookie*
 Title    Das kantenverknüpfte tritetraedrische Selenostannat(IV)-Anion [Sn 3 Se 8 ] 4 . Darstellung und Struktur von K 4 Sn 3 Se 8 The Edge-bridged Tritetrahedral Selenostannate(IV) Anion [Sn 3 Se 8 ] 4-. Preparation and Structure of K 4 Sn 3 Se 8  
 Abstract    The potassium selenostannate(IV) K4Sn3Ses has been prepared by methanolothermal reaction of K2C03 with elemental Sn and Se at 190 °C and its structure established by X-ray structural analysis. The unit cell contains isolated [Sn3Se8] 4-anions consisting of a central SnSe4-tetrahedron edge-bridged to two further tetrahedra. Crystallographic D2-symmetry is observed for these an-ions. The four-membered rings are markedly distorted with Sn —Se bond distances of 2.520(1) to the central tin atom as compared to long Sn-Se distances of 2.622(1) Ä to the tin atoms of the outer tetrahedra. The terminal Sn —Se bonds have a length of 2.473(1) Ä. 
  Reference    Z. Naturforsch. 43b, 249—252 (1988); eingegangen am 30. November 1987 
  Published    1988 
  Keywords    Potassium Selenostannate(IV), Methanolothermal Synthesis, Crystal Structure 
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 Identifier    ZNB-1988-43b-0249 
 Volume    43 
157Author    FranzA. Mautner, Harald Krischner, Christoph KratkyRequires cookie*
 Title    Darstellung und Kristallstruktur von Zinkazid * 4-Methylpyridin Preparation and Crystal Structure of Zinc Azide * 4-Methylpyridine  
 Abstract    Zinc azide • 4-methylpyridine (1) is formed by the reaction of zinc azide with the corresponding pyridine in aqueous solution. The crystal structure was determined by single crystal X-ray diffrac-tion methods. The crystals of 1 are monoclinic, space group C2/c, Z = 4, a = 1085.5(2), b = 1692.7(11), c = 619.7(6) pm, ß = 113.47(5)°. Each zinc atom is surrounded by five nitrogen atoms (four from azide groups and one from the pyridine adduct) in a distorted trigonal bipyramidal fashion. The ZnN5-polyhedra share common edges to form chains along the crystallographic c-axis. 
  Reference    Z. Naturforsch. 43b, 253—256 (1988); eingegangen am 22. Oktober/3. Dezember 1987 
  Published    1988 
  Keywords    Azide, Crystal Structure, 4-Methylpyridine, Pentacoordination, Zinc 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0253.pdf 
 Identifier    ZNB-1988-43b-0253 
 Volume    43 
158Author    Christine Pues, Gerhard Baum, Werner Massa, Armin BerndtRequires cookie*
 Title    Struktur eines Homoborirens Structure of a Homoborirene  
 Abstract    Trapping of methyleneborane 7a with 3-hexine yields the stable 1,2-dihydroborete la. Strong folding (148.8°) along the 1,3-diagonal. the short 1.3-distance (191.5 pm), a lengthened 3,4-and a shortened 1,4-bond prove the homoborirene nature of la. 
  Reference    Z. Naturforsch. 43b, 275—279 (1988); eingegangen am 6. November/8. Dezember 1987 
  Published    1988 
  Keywords    Stable 1, 2-Dihydroborete, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0275.pdf 
 Identifier    ZNB-1988-43b-0275 
 Volume    43 
159Author    Christoph KratkyRequires cookie*
 Title      
 Abstract    The crystal structure of Rb2Ca(N3)4-4H20 has been determined by single crystal X-ray methods. The compound is isotypic with K2Ca(N3)4-4H20 and crystallizes in the orthorhombic space group Ccca, Z = 4, a = 1949.1(12) pm, b = 1099.5(3) pm, c — 622.2(1) pm. 
  Reference    Z. Naturforsch. 43b, 497—498 (1988); eingegangen am 23. November 1987/14. Januar 1988 
  Published    1988 
  Keywords    Azide, Calcium, Crystal Structure, Hydrate, Rubidium 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0497_n.pdf 
 Identifier    ZNB-1988-43b-0497_n 
 Volume    43 
160Author    Rupert MarxRequires cookie*
 Title    Darstellung und Kristallstruktur von Cäsiumhydroxid mit Methanol CsOH * CH 3 OH Properties and Crystal Structure of Cesium Hydroxide with Methanol CsOH * CH 3 OH  
 Abstract    Cesium hydroxide methanol, CsOHCH3OH, was obtained by recrystallising Cs0H H:0 in a mixture of liquid ammonia and methanol in sealed quartz ampoules. The colourless, air sensitive crystals are hexagonal (space group P63/m) with a = 1362 pm, c = 430 pm, Z = 6. A structural model derived by Patterson methods was refined to R = 0.033. The structure comprises of trigonal prismatic columns of Cs + and hydrogen bonded chains of OH^ and CH,OH along the c-axis. This leads to the tricapped prisms filled with Cs + and hydrophobic channels formed by the CH, groups. 
  Reference    Z. Naturforsch. 43b, 521—524 (1988); eingegangen am 14. Oktober/7. Dezember 1987 
  Published    1988 
  Keywords    Cesium Hydroxide Methanol, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0521.pdf 
 Identifier    ZNB-1988-43b-0521 
 Volume    43 
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