The synthesis of dinuclear dibutyltin (IV) complexes 1a–4d, prepared in one pot by the reaction of 2-amino-4-R-phenol (R= H, Me, Cl, NO2), 2-pyridinecarboxaldehyde, dicarboxylic (2, 5-pyridinedicarboxylic, terephthalic, isophthalic, and oxalic) acids and dibutyltin oxides, is described. The complexes were characterized using IR, MS and 1H, 13C and 119Sn NMR techniques. The molecular structures of complexes 1a, 1c and 4c were ...