X-Ray crystal structure of a cationic rhodium hydride complex with a cis-chelating diphosphine ligand [{Rh(dipp)H}2(µ-H)2(µ-ClO4)]ClO4{dipp = Pri2P[CH2]3PPri2}
Abstract
An X-ray crystallographic study of a rhodium hydride complex containing a cis-chelating diphosphine, isolated from the reaction of a cationic rhodium(I) hydrogenation catalyst precursor [Rh(dipp)(nbd)]ClO4[dipp = Pri2PC3H6PPri2, nbd = norbornadiene] with H2, has revealed the structure as [{Rh(dipp)H}2(µ-H)2(µ-ClO4)]ClO4, suggesting the presence of a rhodium cis-dihydride species [Rh(dipp)(H)2S2]+(S = solvent), as an intermediate.