Beiträge zur Chemie des Phosphors, 161 [1] Kernresonanzspektren und Struktur von Heptaphosphan(3), P7H3 / Contributions to the Chemistry of Phosphorus, 161 [1] NMR Spectra and Structure of Heptaphosphane(3), P7H3
Open Access
- 1 November 1985
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 40 (11) , 1424-1429
- https://doi.org/10.1515/znb-1985-1102
Abstract
Heptaphosphane(3) (1) is obtained pure by the reaction of (Me3Si)3P7 with methanol and has been characterized NMR spectroscopically (in nascent state). It turned out to be a mixture of two diastereomers P7H3sym and P7H3asym, which differ in the spatial arrangement of the hydrogen atoms. Both isomers were proven to possess the earlier reported structure of a tri-cyclo[2.2.1.02,6]heptaphosphane, which in the case of P7H3sym was ascertained by a complete analysis of its 31P{1H} NMR spectrum. As shown by the chemical shifts, the P7 cage in P7H3sym is clearly stretched compared with P7Me3sym and (Me3Si)3P7.Keywords
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