Synthesis and Structure of Bis(2,6-dibromo-4-chlorophenoxy)triphenylbismuth and Dibromotriphenylbismuth

摘要

Bis(2,6-dibromo-4-chlorophenoxy)triphenylbismuth and dibromotriphenylbismuth were synthesized by the reaction of triphenylbismuth, 2,6-dibromo-4-chlorophenol, and hydrogen peroxide (1:2:1 molar ratio) in diethyl ether. The structure of these compounds was determined by X-ray crystallography. The coordination polyhedra of the Bi atoms are distorted trigonal bipyramids with aryloxy groups or bromine atoms in axial positions. The Bi-C, Bi-O, and Bi-Br bond lengths are 2.184(6)-2.216(4), 2.241(3), 2.245(3), and 2.7262(9) and 2.7384(9) A, respectively. The intramolecular contacts Bi…Br (l,4) in triphenylbismuth diaryl-oxide are 3.850(1) and 3.965(1) A, respectively.