The Crystal and Molecular Structure of HOs6(CO)21(NCMe)PH2

Summary, in English

The crystal structure of the phosphide-bridged cluster [Os6(μ-H)(CO)12(NCMe)(μ-PH2)] 4 has been determined. The cluster consists of two Os3 triangles which are linked by a PH2 moiety which is terminally bound to each triangle. The acetonitrile ligand is axially coordinated and the hydride bridges the Os---Os edge to which the phosphide moiety and the acetonitrile are coordinated. The molecular structure of 4 resembles those of the related clusters [Os6(μ-H)(CO)22(μ-PH2)] 1 and [Os6(μ-H)(CO)21(CNBut)(μ-PH2)] 2 although the dihedral angles between the two osmium triangles vary for 1, 2 and 4. The relative orientation of the two linked metal triangles in 4 (as well as 1 and 2) differs from that of the phosphite-substituted analogue [Os6(μ-H)(CO)20{P(OMe)3}2(μ-PH2)]3; this difference is attributed to steric factors.

• Author: Ebbe Nordlander; Brian F G Johnson; Jack Lewis; Paul R Raithby
• Department/s: Department of Chemistry
• Publishing year: 1997
• Language: English
• Pages: 3463-3467
• Publication/Series: Polyhedron
• Volume: 16
• Issue: 19
• Links: http://dx.doi.org/10.1016/S0277-5387(97)00060-0
• Document type: Journal article
• Publisher: Elsevier
• Topic: Inorganic Chemistry
• Keywords: osmium; phosphide bridge; crystal structure
• Status: Published
• ISBN/ISSN/Other: ISSN: 0277-5387