Dibutyltin(IV) complexes containing arylazobenzoate ligands: chemistry, in vitro cytotoxic effects on human tumor cell lines and mode of interaction with some enzymes

Dibutyltin(IV) complexes of composition Bu2Sn(LH)2, where LH is a carboxylate residue derived from 2-[(E)-(5-tert-butyl-2-hydroxyphenyl)diazenyl]benzoate (L1H) with water molecule (1), 4-[(E)-(5-tert-butyl-2-hydroxyphenyl)diazenyl]benzoate (L2H) (2) and 4-[(E)-(4-hydroxy-5-methylphenyl)diazenyl]benzoate (L3H) (3), were synthesized and characterized by spectroscopic (1H, 13C and 119Sn NMR, IR, 119Sn Mossbauer) techniques. A full characterization...