Abstract

The molecule (η5-pentamethylcyclopentadienyl)(methyldiphenylphosphinite-P)dichlororhodium(III), [(η5-C5Me5)RhCl2(PPh2OMe)], crystallizes in the monoclinic crystal system in space group P21/c with unit cell parameters a = 16.056(3) A, b = 9.4331(18) A, c = 15.745(3) A, β = 108.330(4)°, V = 2263.8(7) A3 and Z = 4. There is three-legged piano stool geometry about Rh. The Rh-P distance of 2.278(2) A is shorter than those of [(η5-C5Me5)RhCl2(PPh2OR)] where R is an aryl group, and longer than those found in [(η5-C5Me5)RhCl2{PPh(OR)2}]. The structure reveals significant distortion of the pentamethylcyclopentadienyl towards ′η3,η2-enyl-ene′ coordination.

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