Schiff base organotin complexes 1 and 2 have been synthesized via the reaction of the o-vanillin-2-amino-4-nitrophenol Schiff base (H2L) with the dibutyltin oxide and the dibenzyltin dichloride, respectively. The complexes have been characterized by IR,1H NMR,13C NMR spectra, elemental analysis and the crystal structures have been determined by X-ray diffraction. The anticancer activity of H2L, 1 and 2 against five species of cancer cell which are Hela, MCF7, HepG2, Colo205, NCI-H460 were tested respectively, and the tests showed that complex 1...