Synthesis and Structure of Triarylantimony Bis(dihydroxybenzoates)

In the reactions of oxidative addition of 2,6- and 2,3-dihydroxybenzoic acids to triphenyl- and tri(4-methylphenyl)antimony in the presence of hydrogen peroxide as an oxidizing agent, the acids act as monofunctional compounds to form triarylantimony dicarboxylates. Molecular structures of the synthesized compounds were determined by single crystal X-ray diffraction analysis. The tendency of compounds in crystals to dimerization with the formation of intermolecular hydrogen O—H⋯O=C bonds was revealed.