2-Oxo-butyric acid salicylacylhydrazone dibenzyltin (IV) complexes 1 {[o-OHC_6H_4(O)C=N-N=C(Et)COO](CH_3OH)[(C_6H_5CH_2)_2Sn]}_2 and 2 {[o-OH-C_6H_4(O)C=N-N=C(Et)-COO](CH_3OH)[(2,4-Cl_2C_6H_3CH_2)_2Sn]}_2 have been synthesized. The complexes were characterized by IR, 1H, 13C and 119Sn NMR spectra, elemental analysis and thermal stability analysis, and the crystal structures were determined by X-ray diffraction. The crystal of complex 1 belongs to triclinic system, space group P1 with a = 8.9121(6), b = 10.3875(7), c = 14.5658(10) A, α = 89.534...