Reaction of pentaphenylantimony with triphenylbismuth diacylates

Reactions of pentaphenylantimony with triphenylbismuth diacylates yield the corresponding tetraphenylantimony acylates. Triphenylbismuth bis(trichloro acetate) was prepared by oxidation of triphenylbismuth with hydrogen peroxi de in the presence of trichloroacetic acid. The structure of triphenylbismu th dibenzoate was determined by single crystal X-ray diffraction. The coord ination polyhedron of the central atom is intermediate between trigonal bip yramid and pentagonal bipyramid; the benzoate groups occupy the equatorial position.