Crystal and molecular structure of dicarbonyl-π-cyclopentadienyliodo[tri(n-butyl)phosphine]molybdenum(II)

Abstract

The title compound crystallises in the space group P4₂/n(C_4h⁴), with Z= 8, in a unit cell of dimensions: a=b= 19·704 ± 0·006, c= 11·736 ± 0·008 Å. The structure was solved from visually estimated photographic data by the heavy-atom method, and refined to R 11·1% for 938 independent reflections. The molecule has a sandwich-type configuration with the cyclopentadienyl ring on one side of the molybdenum, and the other ligands, which are roughly square planar, lying on the other side. The carbonyls are mutually cis.