Synthesis and Structure of (2)-Oxobis(carboxylatotriarylantimony)

摘要

Binuclear antimony compounds with a bridging oxygen atom [Ph3SbOC(O)R](2)O (R = CF2CF3, CF2CF2CF3), [(4-M?C6H4)(3)SbOC(O)CF2CF3](2)O, [(3-FC6H4)(3)SbOC(O)R](2)O (R = C6F5, CF2CF3) have been synthesized by reacting equimolar amounts of triarylantimony, carboxylic acid and tert-butyl hydroperoxide in diethyl ether. According to X-ray diffraction data, in the molecules of compounds obtained, the Sb atoms have a trigonal bipyramid coordination with carboxylate ligands and a bridging oxygen atom in axial positions. The intramolecular distances SbO with a carbonyl oxygen atom are less than the sum of the van der Waals radii of Sb and O by similar to 0.2-0.4 angstrom.