IMATO-N,N')(TRIPHENYLPHOSPHINE-P)VINYLRHODIUM(III)

The title structure {bis[2,3-butanedial -(1-)-NN'](triphenylphosphine- P)vinylrhodium(III), [Rh(C2H3)(C4H7N2O2)2(C18H15P)]} consists of discr ete complexes in which the Rh atom displays distorted octahedral coord ination, where the two dimethylglyoxime ligands lie in the equatorial plane and the vinyl and triphenylphosphine groups occupy the axial pos itions. The Rh atom is displaced by 0. 123 (1) angstrom from the mean plane through the four oxime N donors. The average Rh-N distance is 1. 957 (2) angstrom, while the axial Rh-P and Rh-C distances are 2.447 (1 ) and 2.035 (3) angstrom, respectively. Comparison of the results with those obtained previously for the analogous ethyl compound indicates a lower trans influence of the vinyl ligand in the axial P-Rh-C fragme nt.