Synthesis, Spectroscopic Characterization, and Biological Evaluation Studies of 5-Bromo-3-(((hydroxy-2-methylquinolin-7-yl)methylene)hydrazono)indolin-2-one and Its Metal (II) Complexes

Table 4

Electronic spectral bands and ligand field parameters of the Co(II), Ni(II), and Cu(II) complexes in DMF (10⁻³ M) solution.

Complexes	Transitions in cm^−1			Dq (cm^−1)	(cm^−1)		%		LFSE (k cal)
	Co(II) complex	7148	15384							20000	823	929	0.89	10.64	2.15	14.11
Ni(II) complex	9614	15384	25000	961	769	0.73	26.02	1.60	32.96
Cu(II) complex		14285–17391		1583	—	—	—	—	27.15