Synthesis and structure of tetra- and triphenylantimony salicylaldoximates

Tetraphenylantimony salicylaldoximate (I) was synthesized by reactions of pentaphenylantimony with salicylaldoxime or triphenylantimony disalicylaldoximate in toluene. Triphenylantimony bis(salicylaldoximate) (II) was synthesized by the reaction between triphenylantimony, hydrogen peroxide, and salicyl- aldoxime. The structures of compounds I and II were determined by X-ray crystallography. The coordination of Sb atoms in I and II is a distorted trigonal bipyramid. For compounds I and II, Sb-C bond lengths are 2.1132(13)?C2.1760(14) ? and 2.1026(15)?C2.112(2) ?, the Sb-O distances are 2.1771(11) ? and 2.0768(11) ?, and the Sb??N intermolecular contacts are equal to 2.945(2) ? and 2.882(2) ?, respectively.