Crystal and molecular structure of tritriphenylphosphine rhodium carbonyl hydride

trans-Carbonylchlorobis[tris(p-fluorophenyl)phosphine]rhodium(I), [Rh(C18H12F3P)2(CO)Cl]

“…The Rh-C and Rh-P lengths are similar to those found by La Placa & Ibers (1965) in Rh(CO)[P(Ph)3]3; thus the F atoms have no influence on the Rh-P bond.…”

Tris(triphenylphosphine)(trifluorophosphine)rhodium(I) hydride benzene solvate

“…The three triphenylphosphine P atoms are displaced slightly towards the hydride atom such that the Rh atom is 0.38 A out of the plane of the three equatorial P atoms, and the average P(ax)-Rh-P(eq) angle is 99 °. A similar geometry has been found in HRh(CO)(PPh3) 3 (La Placa & Ibers, 1965) where the displacement of the Rh atom from the equatorial plane is 0.36 A. In both molecules this distortion from regular geometry is probably due to minimization of contacts between the phenyl rings of the triphenylphosphines and the larger of the two axial ligands, although it may also be due to the larger steric requirements of partial multiple-bond character in the Rh-PF 3 and Rh-CO bonds.…”

Structural studies of incipient pentacoordination of silicon in hydrido transition-metal silyl compounds. II. The crystal structure of trans-hydridobis(difluoromethylsilyl)(η-cyclopentadienyl)monocarbonyliron, (η5-C5H5)-Fe(CO)H(SiF2CH3)2

“…The general procedure was that of La Placa & Ibers (1965), i.e. use of a series of difference maps with varying maximum limits of sin 0//l for the contributing data.…”