Synthesis, Characterization, and Structural Assessment of Ni(II) Complexes Derived from Bis(2-hydroxy-1-naphthaldehyde)succinoyldihydrazone

Table 2

Ligand field parameters for Ni(II) complexes derived from bis(2-hydroxy-1-naphthaldehyde)succinoyldihydrazone.

Serial number	Complex	→ (F)		→ (F)		Dq (cm^−1)	ν2/ν1	(cm^−1)	β	β° (%)	LFSE (kcal mol^−1)
		(ν1)		(ν2)
		nm	cm^−1	nm	cm^−1
1	[Ni(H2nsh)(H2O)2]	845	11834	564	17730	1183.4	1.498	653.57	0.6278	37.22	40.66
2	[Ni(H2nsh)(py)2]·2H2O	842	11876	562	17794	1187.6	1.4983	656.09	0.6302	36.98	40.80
3	[Ni(H2nsh)(2-pic)2]	847	11806	564	17730	1180.6	1.5017	659.79	0.6338	36.62	40.56
4	[Ni(H2nsh)(3-pic)2]·2H2O	846	11820	563	17762	1182	1.5027	662.63	0.6365	36.35	40.61
5	[Ni(H2nsh)(4-pic)2]	842	11876	561	17825	1187.6	1.5009	661.81	0.6357	36.43	40.80
6	[Ni2(nsh)(H2O)4]·H2O	843	11862	562	17794	1186.2	1.5001	659.18	0.6332	36.68	40.75
7	[Ni2(nsh)(py)4]·4H2O	848	11792	564	17730	1179.2	1.5035	662.95	0.6368	36.32	40.51
8	[Ni2(nsh)(2-pic)4]·4H2O	849	11779	565	17699	1177.9	1.5025	660.07	0.6341	36.59	40.47
9	[Ni2(nsh)(3-pic)4]·4H2O	850	11765	566	17606	1176.5	1.4964	645.98	0.6205	37.95	40.42
10	[Ni2(nsh)(4-pic)4]·4H2O	844	11848	563	17762	1184.8	1.4991	656.37	0.6302	36.98	40.70