Molybdenum–copper–sulphur-containing cage system and its bioinorganic relevance. Preparation and X-ray crystal structure of (Cu3MoS3Cl)(PPh3)3S with an interesting stereochemistry of non-equivalent Cu atoms

Abstract

The preparation and structural characterization of (Cu₃MoS₃Cl)(PPh₃)₃S, which has a molybdenum–copper–sulphur-containing pseudo-cubane type cage structure and which is a model for Cu–Mo–S interactions in biochemical processes, is reported; the stereochemistry of the three non-equivalent Cu atoms is unusual with the co-ordination of copper ranging from strongly distorted tetrahedral to pseudo-trigonal planar.