Synthesis Characterization and Antimicrobial Activity Studies of Some Transition Metal Complexes Derived from 3-Chloro-N′-[(1E)-(2-hydroxy phenyl)methylene]-6-methoxy-1-benzothiophene-2-carbohydrazide

Table 1

Physical, analytical, and magnetic susceptibility and molar conductance data of ligand HL and its complexes.

Compds	Molecular formula	Mol Wt.	M.P °C  (yield in %)	Elemental analysis (%) Calcd (found)					Mag. moment; μeff (BM)	Molar cond. (ƛ M); ohm^−1 cm^−2 mol^−1	Colour
				M	C	H	N	Cl
HL	C17H13N2O3SCl	360.81	266–268°C (65)	—	56.59 (56.41)	3.63 (3.53)	7.76 (7.85)	9.83 (9.60)	—	—	Colorless
Cu-complex	Cu(C34H24N4O6S2Cl2)	783.15	308–310°C (70)	8.11 (8.03)	52.14 (52.31)	3.09 (3.03)	7.15 (7.21)	9.05 (8.90)	1.91	12	Brown
Co-complex	Co(C34H24N4O6S2Cl2)	778.55	275–278°C (67)	7.32 (7.51)	52.45 (52.21)	3.11 (3.03)	7.20 (7.25)	9.11 (8.90)	5.01	14	Brown
Ni-complex	Ni(C34H24N4O6S2Cl2)	778.55	300 above (77)	7.54 (7.51)	52.47 (52.29)	3.11 (3.28)	7.20 (7.08)	9.11 (9.17)	2.90	33	Yellow
Zn-complex	Zn(C17H11N2O3SCl2)	459.67	222–225°C (62)	14.20 (14.10)	44.32 (44.10)	2.63 (2.41)	6.08 (5.91)	15.39 (15.29)	Diamagnetic	37	Yellow
Hg-complex	Hg(C17H11N2O3SCl2)	594.85	280–283°C (72)	33.66 (33.41)	34.27 (34.05)	2.03 (1.84)	4.70 (4.79)	11.90 (11.69)	Diamagnetic	11	Brown
Mn-complex	Mn(C34H24N4O6S2Cl2)	774.55	300 above (74)	7.09 (7.05)	52.72 (52.66)	3.12 (3.23)	7.23 (7.15)	9.15 (9.00)	5.68	16	Buff
Fe-complex	Fe(C17H13N2O4S1Cl3)	504.57	294–296°C (70)	11.07 (10.91)	40.47 (40.27)	2.80 (2.91)	5.55 (5.39)	21.08 (20.87)	5.91	10	Dark brown