| | 21 | Author
| M. Somer, W. Hönle, H. G. Von Schnering | Requires cookie* | | | Title
| Darstellung, Kristallstruktur und Schwingungsspektren von Cs3A s7 und Cs3(NH3)A s7 Syntheses, Crystal Structure and Vibrational Spectra of Cs3As7 and Cs3(NH3)As7  | | | | Abstract
| Cs3A s7, a com pound with cage-like A s73" anions, has been prepared from the elem en ts in sealed quartz am poules at 820 K. The ruby-red com pound undergoes a first order phase transition at 640 K and is obtained as m icrocrystalline samples. The structure o f the low-tem perature a-m odification is not known, but /3-Cs3A s7 belongs to the plastically crystalline ß -R b 3P7 type o f | | | |
Reference
| Z. Naturforsch. 44b, 296 (1989); eingegangen am 15. Novem ber 1988 | | | |
Published
| 1989 | | | |
Keywords
| Tricesium heptaarsenide, Tricesium am m oniateheptaarsenide, Crystal Structure, Vibrational Spectra, H eptaarsanortricyclene Anion | | | |
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| default:Reihe_B/44/ZNB-1989-44b-0296.pdf | | | | Identifier
| ZNB-1989-44b-0296 | | | | Volume
| 44 | |
| 22 | Author
| JohnDavid Kildea, Wolfgang Hiller, Beatrice Borgsen, Kurt Dehnicke | Requires cookie* | | | Title
| Synthese, IR-Spektrum und Kristallstruktur des Amidinatokomplexes [N a(15-K rone-5)][Ph—C(NSiM e3)2SnCl3F] Synthesis, IR Spectrum, and Crystal Structure of the Amidinato Complex [N a(15-Crow n-5)][Ph-C(N SiM e3)2SnCl3F] | | | |
Reference
| Z. Naturforsch. 44b, 889 (1989); eingegangen am 30. März 1989 | | | |
Published
| 1989 | | | |
Keywords
| N, N '-Bis(trim ethylsilyl)am idinato C om plex, Synthesis, IR Spectra, Crystal Structure | | | |
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| default:Reihe_B/44/ZNB-1989-44b-0889.pdf | | | | Identifier
| ZNB-1989-44b-0889 | | | | Volume
| 44 | |
| 23 | Author
| HeinzDieter Lutz, Thomas Kellersohn, Konrad Beckenkamp | Requires cookie* | | | Title
| Zur Kenntnis der Hydroxidhalogenide des Bariums | | | | Abstract
| Kristallstruktur und Schwingungsspektren von Ba[0(H,D)]X • 2 (H ,D)20 (X = CI, Br) Barium Hydroxide Halides. Crystal Structure and Vibrational Spectra of Ba[0(H ,D)]X-2(H ,D)20 (X = Cl, Br) a (0 H)2-B aX 2 -H 20 (X = CI. Br) The quaternary systems B a(O H)2—BaCl2—H 20 and B a(O H)2—BaBr2—H 20 were studied with the help of X-ray and neutron diffraction as well as IR , Raman, D T A , and TG methods. The following compounds have been established or confirmed: B a(O H)Cl hH 20 (n = 0, 1/2, 2) and B a (0 H)B r-«H 20 (n = 0, 1/2, 2). The crystal structures (of hitherto unknown structure type) of B a (0 H)C l-2 H :0 and B a (0 D)C l-2 D 20 were determined by single crystal X-ray methods and neutron powder diffraction (space group P4Inmm, Z = 2, 621 unique reflections, R — 8 . 8 and 1.9%, respectively). Whereas the hydroxide ion in this layer structured compound is non-hydrogen bonded, i.e. no H-bond donor group, nor it is bound to the Ba:+ ions, the water molecules are involved in strong H-bonds to adjacent O H " ions. The coordination of the barium ions is monocapped tetragonal antiprismatic (4 H 20 and 5 halide ions). The IR and Raman spectra of B a (0 H)X -2 H :0 (X = Cl. Br) are assigned and discussed in terms of hydrogen bonding, isotopic shifts, and intermolecular coupling of the bands observed. The stretching modes of the O H " ions (3672 and 3667 cm-1, 95 K) are shifted to higher wavenumbers by about 100 cm"' as compared with those of free O H -ions. | | | |
Reference
| Z. Naturforsch. 44b, 928 (1989); eingegangen am 6. Februar/7. April 1989 | | | |
Published
| 1989 | | | |
Keywords
| Crystal Structure, Barium Hydroxide Halides, Infrared Spectra, Raman Spectra, System: B | | | |
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| default:Reihe_B/44/ZNB-1989-44b-0928.pdf | | | | Identifier
| ZNB-1989-44b-0928 | | | | Volume
| 44 | |
| 24 | Author
| PeterH. Ofacker, Claus Friebel, Kurt Dehnicke, Petra Bäuml, Wolfgang Hiller, Joachim Strähle | Requires cookie* | | | Title
| Über die Reduktion von Alkinkomplexen des Molybdäns und Wolframs in hohen Oxidationsstufen. Die Kristallstruktur von MoCI3(THF)3 On the Reduction of Alkyne Complexes of M olybdenum and Tungsten in High Oxidation States. The Crystal Structure of MoC13(T H F)3 | | | | Abstract
| The reduction of the tungsten alkyne complexes [WC14(R C = C R)]2 (R — Ph. SiMe3) with cobaltocen in T H F solutions leads to the complexes [CoCp2]2[WCl4(R C = C R)]2 (R = Ph (i); R — SiMe3 (2)), as green, oxygen sensitive crystalline powders. Reduction of [WCl4(M e3SiC =C SiM e3)]2 and of[M oC l4(P hC = C P h)]2 with sodium naphthalide in T H F solutions in the presence of 15-crown-5 gives [Na-15-crown-5]3[W2Cl9], and MoC13(T H F)3, respectively. All compounds have been characterized by IR spectroscopy, and 1 and 2, in addition, by their E PR spectra. The crystal structure of MoC13(T H F)3 was determ ined by X-ray m ethods. Space group P2,/c, Z — 4, 2642 observed unique reflexions, R = 0.050. Lattice dim ensions at 20 °C: a = 888.4(2), b = 1281.5(3), c = 1535.2(3) pm, ß = 92.17(2)°. The com pound forms m onom eric octahedral molecules with a meridional arrangem ent of the ligands. | | | |
Reference
| Z. Naturforsch. 44b, 1161 (1989); eingegangen am 28. Juni 1989 | | | |
Published
| 1989 | | | |
Keywords
| Alkyne Complexes of Molybdenum and Tungsten, R eduction, E PR Spectra, Crystal Structure, IR Spectra | | | |
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| default:Reihe_B/44/ZNB-1989-44b-1161.pdf | | | | Identifier
| ZNB-1989-44b-1161 | | | | Volume
| 44 | |
| 25 | Author
| D. Ieter Fenske, Christina Ergezinger, Kurt Dehnicke | Requires cookie* | | | Title
| Crystal Structure of l,l-D ichloro-3,5- diphenyl-4-H-l,2.4,6-/.4-selenatriazine, SeCl2C2N 3H (C 6H 5)2 | | | |
Reference
| Z. Naturforsch. 44b, 857—8 (1989); eingegangen am 15. Februar 1989 | | | |
Published
| 1989 | | | |
Keywords
| 1, l-D ichloro-3, 5-diph en yl-4-H -l, 2, 46-Ä4-selenatriazine, Preparation, Crystal Structure | | | |
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| default:Reihe_B/44/ZNB-1989-44b-0857_n.pdf | | | | Identifier
| ZNB-1989-44b-0857_n | | | | Volume
| 44 | |
| 26 | Author
| B. E. Isenm, Ann, M. S. Om Er | Requires cookie* | | | Title
| Intermetallische Verbindungen mit HgCl2-isosteren Anionen: Strukturelle und schwingungsspektroskopische Untersuchung von Na4HgP2, K4ZnP2, K4CdP2 und K4HgP2 | | | | Abstract
| Interm etallic C om pounds w ith H gC l2 Isoelectronic A nions: Crystal S tructure and V ibrational Spectra of N a4H g P 2, K 4Z n P 2, K4C d P 2 and K4H gP 2 The new com pounds Na4H gP2, K4ZnP2 and K4H gP2 are isotypic and crystallize in the rhombo-hedral system , space group R 3 m , Z = 3, with the lattice constants: N a4H gP2: a — 500.8(2) pm, c = 2544.7(8) pm, d a — 5.081; K4ZnP2: a — 566.4(2) pm , c = 2610.1(8) pm, d a = 4.608; K4H gP2: a = 567.1(2) pm, c = 2697.7(8) pm, d a = 4.757. The crystal structure of the com pound K4CdP2, formerly described in the m onoclinic system (space group C 2/m), has been revised (R 3 m , a — 568.1(2) pm , c = 2698.4(8) pm, d a = 4.750). Linear units [P —T —P]4~ with T = Zn, Cd, H g, which are isoelectronic to the m olecule H gC l2, represent the characteristic structure elem ents. The far infrared spectra are recorded and assigned on the basis o f the [ P -T —P]4_ anions. | | | |
Reference
| Z. Naturforsch. 44b, 1228 (1989); eingegangen am 17. Mai 1989 | | | |
Published
| 1989 | | | |
Keywords
| Tetrasodium-Diphosphidom ercurate, Tetrapotassium-D iphosphidom ercurate, Tetrapotassium-D iphosphidozincate, Tetrapotassium-D iphosphidocadm ate, Crystal Structure, Vibrational Spectra | | | |
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| default:Reihe_B/44/ZNB-1989-44b-1228.pdf | | | | Identifier
| ZNB-1989-44b-1228 | | | | Volume
| 44 | |
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