Specific Features of the Reactions of Pentaphenylantimony with Polyfunctional Heterocyclic Carboxylic Acids

Pyridine-2,6- and 2,5-dicarboxylic acids have acted as bifunctional compounds in the reactions with pentaphenylantimony, forming bis(tetraphenylantimony)pyridine-2,6- and 2,5-dicarboxylate, respectively. The interaction of pentaphenylantimony with 2-[(6-hydroxy-5-nitroso-4(3H)-oxopyrimidin-2-yl)sulfanyl]acetic acid involving carboxyl and hydroxyl groups in the pyrimidine ring has afforded 2-{[5-nitroso-4(3H)-oxo-6-(tetraphenylstiboxy)pyrimidin-2-yl]sulfanyl}tetraphenylantimony acetate. The structural features of the synthesized compounds have been established by means of X-ray diffraction analysis.