A Cu(I) cluster bearing a bridging phosphane ligand

The solid state structure of a Cu(I) cluster bearing bridging phosphane ligands is described. This Cu-4 cluster results from a formal Cl-abstraction of the CH2Cl2 solvent. This derivative is the first example of a multinuclear Cu(I) complex bearing bridging phosphane ligands in which the Cu(I) centers have different coordination geometries. The four Cu(I) ions participate in metallophilic interactions within this cluster. Interestingly, despite the gross molecular structure being highly dissymmetrical, the mu-P atoms bridge symmetrically the metal centers. (C) 2010 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.