Synthesis, characterization, crystal structure and antitumor activity of organotin(IV) compounds bearing ferrocenecarboxylic acid

► Four new organotin(IV) complexes have been synthesized and characterized. ► Antitumor activities of complexes 1-4 have been tested. ► Complexes 1 and 2 exhibit medium activity towards P388 cell lines and Hela cell lines. ► Complexes 3 and 4 exhibit medium activity towards P388 cell lines and strong activity towards Hela cell lines.