Abstract
Five organotin complexes with general formulae [LCSSSnR
2
]
n
(R = Me,
n
-Bu, Ph) and R
3
SnLCSSSnR
3
(R =
n
-Bu, Ph) were synthesized by the reaction of equimolar quantities of sarcosine (HLH) with KOH, CS
2
and either R
2
SnCl
2
(R = Me,
n
-Bu, Ph) or R
3
SnCl (R =
n
-Bu, Ph) in methanol. Elemental (CHNS) analyses data and mass spectroscopy agreed well with the molecular composition of the synthesized products. FTIR spectroscopy verified the monodentate binding mode of the carboxylate group and a bidentate chelating behavior of the dithiocarboxylate moiety of the ligand for binding with tin(IV). Thus, penta- and hexa-coordinated environments around tin were observed in the solid state in di- and triorganotin complexes, respectively. The penta-coordinated geometry in diorganotin(IV) product
2
was further verified by its single-crystal XRD analysis. The organotin moieties and ligand units were interconnected with each other alternately in hexameric cyclic arrangement. The number of protons found in
1
H NMR spectra was in good agreement with those calculated by incremental method. Complexes were examined for their antioxidant, antimicrobial, antidiabetic, thrombolytic, hemolytic activities. The free ligand
HLH
was found inactive against all the four bacterial strains.