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'H alogeno Zirconates IV' in keywords
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1989 (1)
1Author    EvaH. Artm Ann, Kurt Dehnicke, D. Ieter Fenske, Helm Ut Goesmann, G.Erhard BaumRequires cookie*
 Title    [Na-15-Krone-5]2[ZrF2Cl4] und (PPh4)2[ZrCI6] * 2 CH2CI2; Synthesen, IR-Spektren und Kristallstrukturen [Na-15-Crown-5]2[ZrF:Cl4] and (PPh4)2[ZrCl6] * 2 C H 2C12; Syntheses, IR Spectra, and Crystal Structures  
 Abstract    [Na-15-crown-5]: [Z rF2Cl4] has been prepared by the reaction of the amidinato complex [Ph—C(NSiM e3)2Z rC l3]2 with sodium fluoride in acetonitrile suspension, as well as by the reaction ° f Z rC l4 in acetonitrile, both in the presence of 15-crown-5. On an analogous route (PPh4)2[ZrCl6] • 2 CH2C12 has been prepared by the reaction of [P h -C (N S iM e3)2Z rC l3]2 with PPh4Cl in C H 2C12 solution, as well as by the reaction of ZrC l4 with PPh4Cl in C H 2C12. The compounds are characterized by their IR spectra and by crystal structure determ inations. [Na-15-crown-5]2[ZrF2Cl4]: Space group P 2 1/a, Z = 4, 6589 observed independent reflexions, R = 0.069. Lattice dimensions at 20 °C: a = 1705.0(9), b = 1092.4(6), c = 1906.5(10) pm , ß = 113.14(3) . [Na-15-crown-5]2[ZrF2Cl4] forms ion triples, in which both sodium ions are seven-coordinate by five oxygen atoms of the crown ether molecules, as well as by a fluorine and a chlorine atom of the c/s-[ZrF2Cl4]2~ unit. (PPh4)2[ZrCl6] -2 C H 2C12: Space group P I , Z = 1, 4831 observed independent reflexions, R = 0.041. Lattice dimensions at 20 °C: a = 1030.1(5), b = 1124.8(6), c = 1245.6(6) pm, a = 70.81(3), ß = 80.61(4), y = 80.39(4)°. The com pound has an ionic structure with Z rC l62^ ions of symmetry Cr 
  Reference    Z. Naturforsch. 44b, 1155 (1989); eingegangen am 21. Juni 1989 
  Published    1989 
  Keywords    H alogeno-Zirconates(IV ), Syntheses, IR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/44/ZNB-1989-44b-1155.pdf 
 Identifier    ZNB-1989-44b-1155 
 Volume    44