The complexes of composition [SnCl3L]nCH3CN (n=0—2) have been obtained by SnCl4 interaction with 2-hydroxy(benz)-1-naphthaldehydes benzoyl-(salicyloyl)hydrazones in acetonitrile. It was proved by methods of electronic, IR- and PMR spectroscopy ligands molecules to be coordinated by tin atom as tridentate ones via azomethine group nitrogen atom and carbonyl and oxy-groups oxygen atoms. The thermal stability of obtained compounds has been studied. The structure schemes are offered.