Preparation and X-ray characterization of two-coordinate Cu(I) complex of aliphatic thiolato ligand: Effect of steric bulk on coordination features

摘要

We have synthesized in a single-step procedure from available copper( I) precursor at RT two Cu(I) thiolato clusters of the formula [Cu-4(mu-SCH(CH3)(2))(6)](2) and [Cu-5(mu-SC(CH3)(3))(6)] as revealed by X-ray crystallography, where increased steric bulk leads to a bigger cage with some two-coordinate metal centers. In addition, we identified a mononuclear two coordinate thiolato complex with the bulkier ligand, of the formula NEt4[Cu(SC(CH3)(3))(2)]. This is only the second example of such a complex of an aliphatic ligand that is structurally characterized. The X-ray structure reveals an S-Cu-S angle of 176.7-179.5 degrees, with Cu-S distances of 2.14 angstrom. (C) 2008 Elsevier B.V. All rights reserved.