Synthesis and cis-trans isomerism of (pentamethylcyclopentadienyl)rhenium(III) halide complexes formed by oxidative addition of X2 or HX (X = chlorine, bromine, iodine) to (.eta.5-C5Me5)Re(CO)2(PMe3) or (.eta.5-C5Me5)Re(CO)(PMe3)(N2)

Abstract

The cis isomers of the dihalide complexes have been synthesized from the reaction of Cp * Re(CO)(PMe 3 )(N 2 ) with X 2 in hexane (Cp * =η 5 -C 5 Me 5 ). The trans isomer was synthesized by treatment of trans-Cp * Re(CO)(PMe 3 )(H)(Br) with N-bromosuccinimide