Synthesis, Spectroscopic, and Antimicrobial Studies on Bivalent Zinc and Mercury Complexes of 2-Formylpyridine Thiosemicarbazone

Table 1

Analytical data for the ligand and its Zn(II) and Hg(II) complexes.

Compounds	Molecular formulae	Atomic mass found (calcd)	Yield (%) (g)	Color	Mp (^∘C)	Analysis found (calcd)				Molar conductance (Ω^−1cm^2mol^−1)
						C	H	N	M
Ligand (L)	C7H8N4S	179(180)	65	Shiny	210	46.67	4.45	31.11	—	—
			(4.97)	Cream		(46.62)	(4.49)	(31.20)	—
[Zn(L)2]Cl2	ZnC14H16N8S2Cl2	496(495)	61	Off white	285	33.95	3.26	22.59	13.15	122
			(3.01)			(33.93)	(3.23)	(22.62)	(13.13)
[Zn(L)2](NO3)2	ZnC14H16N10S2O6	551(549)	59	Milky	212	30.58	2.96	20.43	11.85	128
			(3.23)	Yellow		(30.60)	(2.91)	(20.40)	(11.83)
[Zn(L)2](SO4)	ZnC14H16N8S3O4	520(521)	55	Yellow	>350	32.29	3.09	21.43	12.44	125
			(2.86)			(32.24)	(3.07)	(21.49)	(12.47)
[Hg(L)2]Cl2	HgC14H16N8S2Cl2	633(631)	62	Off white	225	26.67	2.57	17.78	31.89	133
			(3.91)			(26.62)	(2.53)	(17.74)	(31.85)
[Hg(L)2](NO3)2	HgC14H16N10S2O6	687(685)	60	Dark	125	24.58	2.36	20.40	29.31	140
			(4.11)	brown		(24.52)	(2.33)	(20.43)	(29.34)
[Hg(L)2](SO4)	HgC14H16N8S3O4	655(657)	60	Brown	180	25.53	2.40	17.09	30.55	138
			(3.94)			(25.57)	(2.43)	(17.04)	(30.59)