SYNTHESIS AND STRUCTURE OF TRI- AND TETRAPHENYLANTIMONY AROXIDES: Ph3Sb[OC6H3(Br2-2,6)(Me-4)]2 AND Ph4SbOC6H3Br2-2,6, Me-4

Interaction of pentaphenylantimony with 2,6-dibromo,4-methylphenol or with bis(2,6-dibromo,4-methylphenoxy)triphenylantimony (1) leads to formation of 2,6-dibromo,4-methylphenoxytetraphenylantimony (2). In molecules of compounds 1 and 2 the antimony atoms have distorted trigonal-bipyramidal coordination with the oxygen atoms in axial positions (OSbO 179.20(15)° (1), OSbC 179.7(9)° (2)). The bond lengths Sb–C and Sb–O equal 2.090(5), 2.101(5), 2.110(5) and 2.088(4), 2.088(4) Å (1), 2.11(2), 2.11(2), 2.11(2), 2.17(3) and 2.234(18), 2.234(18) Å (2), respectively