T. Hanusa, W. Evans
1986
Citations
0
Influential Citations
5
Citations
Journal
Journal of Coordination Chemistry
Abstract
Abstract Hydridotris(triphenylphosphine)rhodium HRh(PPh3)3, I, crystallizes out of a toluene/hexane mixture free from solvent in the space group P21/a with a=23.289(8), b=19.985(6), c=9.810(2)A, β=97.83(2)°, V=4523(2)A3 and Dcalcd =1.308 g cm−3 for Z=4. Molecules of I exhibit a distorted square planar geometry in which the angle subtended by the phosphines adjacent to the hydride ligand is 147.28(4)°. A difference Fourier map based on low-angle diffraction data provided evidence for the hydride ligand with a Rh-H distance of 1.63A. In contrast to the known structure of HRh(PPh3)3 · HN(CH3)2 · THF, II, which contains solvent of crystallization, and has no ortho hydrogen rhodium separations less than 3.01A, a phenyl ring in I has rotated so as to place a hydrogen within 2.87A of the rhodium center.