Structure and reactivity of a dimetallic rhenium hydride complex with a rhenium–rhenium double bond: X-ray crystal structures of [Re2(CO)6(Ph2PCH2PPh2)H2] and [Re2(CO)6(Ph2PCH2PPh2)(NCHMe)H]

Abstract

The complex [Re₂(CO)₆(Ph₂PCH₂PPh₂)H₂] with an Re–Re double bond has been prepared and its crystal structure determined; it reacts with (MeO)₃P, RNC, and MeCN under mild conditions giving 1 : 1 adducts in which the dimetallic unit is preserved and with MeCN two separable isomers are obtained one of which has been shown by X-ray analysis to be the insertion product [Re₂(CO)₆(Ph₂PCH₂PPh₂)(NCHMe)H].