Design and Synthesis of Metal Complexes of (2E)-2-[(2E)-3-Phenylprop-2-en-1-ylidene]hydrazinecarbothioamide and Their Photocatalytic Degradation of Methylene Blue

Table 1

Analytical data of ligands and their complexes.

Complexes	Yield; (%)	M.P; (°C)	Elemental analysis found (Cal.)				𝜇eff	Molar conductance	Electronic spectral data
			Carbon	Hydrogen	Nitrogen	Sulphur	(BM)		Electronic transition	Assignment
[ HL·H2O]	90	114-115	58.41 (58.50)	5.20 (5.40)	20.49 (20.48)	15.51 (15.62)	—	—	—	—
[Co(L)2Cl2]	75	116–118	44.08 (44.45)	4.20 (4.10)	15.14 (15.55)	15.36 (11.87)	1.79	6	8710 (20.3)	^4T1g→^4T2g,
									15385 (14.7)	^4T1g(F)→^4A2g(F)
									29412 (151.2)	^4T1g(F)→^4T1g(P)
[Ni(L)2]	80	255-256	52.26 (51.42)	4.82 (4.64)	17.88 (17.98)	13.85 (13.73)	3.39	15	12658	^3A2g(F)→^3T1g(F)
									21505	^3A2g(F)→T1g(F)
									28985	^3A2g(F)→^3T1g(F)
[Cu(L)2Cl2·2H2O]	72	185–188	41.60 (41.34)	4.23 (4.51)	14.45 (14.46)	11.20 (11.03)	1.58	10	12658	d-d band; charge transfer band
									22222