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  • 1985-1989  (4)
  • 1960-1964
  • 1985  (4)
  • Inorganic Chemistry  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Titan- und Vanadiumchlorid-Komplexe mit Diazadiboretidin- und 1,2-Azaborolinyl-Liganden (1985)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 2418-2428 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Titanium and Vanadium Chloride Complexes with Diazadiboretidine and 1,2-Azaborolinyl Ligands1,3-Di-tert-butyl-2,4-dipropyl-1,3,2,4-diazadiboretidine (2) and TiCl4 form a 1 : 1 adduct (3). 2-Methyl-1-(trimethylsilyl)-1,2-azaborolinyllithium reacts with TiCl4 and VCl3 to give the sandwich complexes bis[2-methyl-1-(trimethylsilyl)-η5-1,2-azaborolinyl]titanium dichloride (5) and -vanadium chloride (6). The X-ray analyses of 3,5 and 6 show that the boron atoms interact with the chlorine ligands of the metals. The reason for this is to be seen in the lack of substantial metal boron backbindings by the electron-poor metals. The B-Cl interactions can also be indicated 11B NMR spectroscopically.
    Notes: 1,3-Di-tert-butyl-2,4-dipropyl-1,3,2,4-diazadiboretidin (2) und TiCl4 bilden ein 1 : 1 Addukt (3). 2-Methyl-1-(trimethylsilyl)-1,2-azaborolinyllithium reagiert mit TiCl4 und VCl3 zu den Sandwichkomplexen Bis[2-methyl-1-(trimethylsilyl)-η5-1,2-azaborolinyl]titandichlorid (5) und -vanadiumchlorid (6). Die Röntgenstrukturanalysen von 3, 5 und 6 zeigen, daß die Boratome mit den Chlorliganden der Metalle in Wechselwirkung treten. Der Grund hierfür ist in dem Fehlen merklicher Metall-Bor-Rückbindung durch die elektronenarmen Metalle zu sehen. Die B-Cl-Wechselwirkungen können auch 11B-NMR-spektroskopisch nachgewiesen werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19851180621
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  • 2
    Electronic Resource
    Electronic Resource
    Chlorotitanate(II): RbTiCl3 und CsTiCl3 (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 524 (1985), S. 90-94 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chlorotitanates (II): RbTiCl3 and CsTiCl3RbTiCl3 and CsTiCl3 are obtained as shiny black single crystals by synproportionation of appropriate amounts of RbCl (CsCl), Ti and TiCl3 in sealed tantalum containers (700°C, 3 d, cooled down with 2 deg/h). The structure determination from single crystal data confirms the assumed isotypism with CsNiCl3 (hexagonal, P63/mmc, Z = 2; RbTiCl3: a = 711.73(4), c = 599.96(11) pm; CsTiCl3: a = 730.18(11), c = 605.3(3) pm).
    Notes: RbTiCl3 und CsTiCl3 erhält man in Form glänzend schwarzer Einkristalle bei der Synproportionierung entsprechender Gemenge von RbCl (CsCl), Ti und TiCl3 in verschweißten Tantalampullen (700°C, 3 d, dann Abkühlen mit 2°/h). Die Strukturbestimmung an Einkristallen belegt die Isotypie mit CsNiCl3 (hexagonal, P63/mmc, Z = 2; RbTiCl3: a = 711.73(4); c = 599,96(11) pm; CsTiCl3: a = 730,18(11); c = 605.3(3) pm).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855240512
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  • 3
    Electronic Resource
    Electronic Resource
    Zweiwertiges Neodym: NdCl2 und KNd2Cl5 (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 528 (1985), S. 55-60 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Divalent Neodymium: NdCl2 and KNd2Cl5Single crystals of NdCl2 have been obtained via metallothermic reduction of NdCl3 with lithium: a = 908.49(5), b = 761.47(5), c = 455.62(2) pm, Pbnm, Z = 4, PbCl2 type, refined to R = 0.047. Reduction of NdCl3 with potassium yields KNd2Cl5: a = 894.51(9), b = 785.16(7), c = 1 265.28(13) pm, β = 90.000(8)°, P21/c, Z = 4, isotypic with TlPb2Cl5. There is a close structural relationship of KNd2Cl5 with K2NdCl5.
    Notes: Bei der „metallothermischen Reduktion“ von NdCl3 mit Lithium werden Einkristalle von NdCl2 erhalten: a = 908,49(5); b = 761,47(5); c = 455,62(2) pm; Pbnm, Z = 4, PbCl2-Typ, Verfeinerung bis R = 0,047. Kalium reduziert NdCl3 unter Bildung von KNd2Cl5: a = 894,51(9); b = 785,16(7); c = 1265,28(13) pm; β = 90,000(8)°, P21/c, Z = 4, isotyp mit TlPb2Cl5. Es besteht eine enge strukturelle Verwandtschaft mit K2NdCl5.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855280906
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  • 4
    Electronic Resource
    Electronic Resource
    Ternäre Halogenide der Seltenen Erden vom Typ A2MX5 (A = K, In, NH4, Rb, Cs; X = Cl, Br, I) (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 521 (1985), S. 161-172 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ternary Rare-Earth Halides of the A2MX5 Type (A = K, In, NH4, Rb, Cs; X = Cl, Br, I)Ternary rare-earth (=M) chlorides, bromides, and iodides In2MCl5, (NH4)2MCl5, Rb2MCl5, Cs2MCl5, CsRbMCl5, K2MBr5, Rb2MBr5, K2MI5, and Rb2MI5 have been synthesized. Single crystals of In2PrCl5, Rb2PrCl5, K2PrBr5, and K2PrI5 were grown and the structures refined. The other halides were characterized by x-ray powder patterns. They are isotypic either with K2PrCl5(orthorhombic, Pnma, Z = 4, hexagonal arrangement of chains of edge-connected polyhedra [PrX7]) or with Cs2DyCl5 (orthorhombic, Pbnm, Z = 4, hexagonal arrangement of cis-corner-connected octahedra [DyCl6]) which may be discriminated in structure field diagrams. The thermal expansion was investigated für Cs2LuCl5 and Rb2PrX5 (X = Cl, Br, I).
    Notes: Die Halogenide sind entweder mit K2PrCl5 (orthorhombisch, Pnma, Z = 4, hexagonal gebündelte Ketten kantenverknüpfter Polyeder [PrCl7]) order mit Cs2DyCl5 (orthorhombisch, Pbnm, Z = 4, hexagonal gebündelte Ketten cis-eckenverknüpfter Oktaeder [DyCl6]) isotyp, sie können in Strukturfeld-Diagrammen voneinander abgegrenzt werden. Die Thermische Ausdehnung wird für Cs2SLuCl5 und Rb2PrX5 (X = Cl, Br, I) röntgenographisch verfolgt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855210219
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