Abstract

Diphenylphosphinecyrhetrene ligand (? 5-C 5H 4PPh 2)Re(CO) 3 (1) reacts with 1 equiv. of PdCl 2(NCPh) 2 to form, after workup, the square-planar trans-[(? 5-C 5H 4PPh 2)Re(CO) 3]PdCl 2(NCMe) (2). Similarly, reaction of 1 with (tetrahydrothiophene)AuCl produces, in excellent yield, the bimetallic complex [(? 5-C 5H 4PPh 2)Re(CO) 3]AuCl (3) with a linear P-Au-Cl moiety. From the reaction of 2 equiv. of 1 with CuBr(SMe 2) the planar-trigonal complex [(? 5-C 5H 4PPh 2)Re(CO) 3] 2CuBr (4) was obtained. 31P NMR and X-ray crystallography demonstrate, for the three cases, that (? 5-C 5H 4PPh 2)Re(CO) 3 acts as a monodentate ligand. The structural parameters of the bimetallic complexes are compared with related diphenylphosphinoferrocene metal complexes, described in the literature. © 2008 Elsevier Ltd. All rights reserved.