Synthesis, Spectroscopic, Molecular Structure, and Antibacterial Studies of Dibutyltin(IV) Schiff Base Complexes Derived from Phenylalanine, Isoleucine, and Glycine

Table 1

Analytical and physical data of the organotin(IV) complexes.

C. number	Reactants		Molar ratio	Products & colour	M.P. °C (d)	Yield (%)	Elemental analysis found (calcd.)				Mol. Wt.; Found (Calcd.)
	Metal	Ligands					%Sn	%C	%H	%N
Bu2Sn(L^1)2	Bu2SnO	C17H14N2O3	1 : 2	C42H44N4O6Sn; Red	164	94	14.35(14.49)	61.30(61.55)	5.44(5.41)	6.72(6.84)	824.55(819.53)
Bu2Sn(L^2)2	Bu2SnO	C14H16N2O3	1 : 2	C36H48N4O6Sn; Red	262	79.14	15.84(15.80)	57.50(57.54)	6.38(6.44)	7.56(7.46)	742.19(751.50)
Bu2Sn(L^3)2	Bu2SnO	C10H8N2O3	1 : 2	C28H32N4O6Sn; Red	174	76.81	18.43(18.57)	52.45(52.61)	5.00(5.05)	8.65(8.76)	630.88(639.29)
Bu2Sn(L^4)2	Bu2SnO	C17H13ClN2O3	1 : 2	C42H42Cl2N4O6Sn; Dark brown	210	72.39	13.03(13.36)	56.84(56.78)	4.73(4.76)	6.39(6.31)	872.54(888.42)
Bu2Sn(L^5)2	Bu2SnO	C14H15ClN2O3	1 : 2	C36H46Cl2N4O6Sn; Light brown	270	68.29	14.34(14.47)	52.59(52.71)	5.60(5.65)	6.70(6.83)	831.57(820.38)
Bu2Sn(L^6)2	Bu2SnO	C10H7ClN2O3	1 : 2	C28H30Cl2N4O6Sn; Dark brown	180–184	71.72	16.84(16.76)	47.41(47.49)	4.25(4.27)	7.85(7.91)	716.67(708.18)