ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Structural Chemistry of Phosphorus Containing Chains and Rings. 7. Molecular and Crystal Structure of the Diphosphagermetane (t-BuP)2(GePh2)2The compound 1,2-di-tert-butyl-3,3,4,4-tetraphenyl-diphospha-3,4-digerma-cyclobutan, (t-BuP)2(GePh2)2, crystallizes monoclinically in the space group P21/c with a = 996.8 pm, b = 1337.3 pm, c = 2403.4 pm, β = 92.66° and Z = 4 formula units. The main structural feature is a non-planar four-membered ring. The (average) bond lengths are d(Ge—Ge) = 242.1 pm, d(Ge—P) = 234.0 pm, d(P—P) = 221.6 pm, d(Ge—C) = 194.9 pm, d(P—C) = 188.tyl4 pm, d(C—C)Ph = 136.l5 pm, d(C—C)t-Bu = 151.8 pm, d(C—H)Ph = 91 pm, d(C—H)t-Bu — 95 pm. The geometry of the substituents phenyl and tert-butyl is quite normal.
Notes:
Die Verbindung 1,2-Di-tert-butyl-3,3,4,4-tetraphenyl-1,2-diphospha-3, 4-digerma-cyclobutan, (t-BuP)2(GePh2)2, kristallisiert in der monoklinen Raumgruppe P21/c mit a = 996,8 pm, b = 1337,3 pm, c = 2403,4 pm, β = 92,66° und Z = 4. Wesentliches Strukturelement ist ein gefalteter P2Ge2-Vierring. Die (gemittelten) Bindungslängen betragen d(Ge—Ge) = 242,1 pm, d(Ge—P) = 234,0 pm, d(P—P) = 221,6 pm, d(Ge—C) = 194,9 pm, d(P—C) = 188,4 pm, d(C—C)Phenyl = 136,5 pm, d(C—C)t-Butyl = 151,8 pm, d(C—H)Phenyl = 91 pm, d(C—H)t-Butyl = 95 pm. Die Geometrie der Substituenten Phenyl und tert-Butyl ist normal.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19835061105
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