Spectral, Molecular Modeling, and Biological Activity Studies on New Schiff’s Base of Acenaphthaquinone Transition Metal Complexes

Table 2

Infrared spectral date of HAAT and its metal complexes.

Vibration	HAAT	Complexes
		Ni(II)	Co(II)	Zn(II)
ν(OH)solv.	—	3420	3425	—
ν(N^4H)	3320	3336	3314	3323
ν(N^2H)	3265	3279	—	3264
ν(CH)Ar.	3048, 2955	3070, 2955	3060, 2957	3050, 2958
ν(CH)Allyl	3029, 2969	3020, 2922	3030, 2918	3018, 2920
ν(C=O)OAc	—	1702, 1390	1725, 1586	1722, 1568
ν(C=O)	1688	1652	1703	1677
ν(C=N)	1640	1619	1664	1656
ν(C=C)Ar	1607	1602	1601	1604
Thioamide I	1525	1520	1513	1524
Thioamide II	1453	1466	1467	1451
Thioamide III	1275	1251	1234	1250
ν(N-N)	1146	1172	1117	1175
ν(C-O)	1052	1092	1080	1083
ν(C=S)	936	930	890 (C-S)	935
ρ(NH)	794	775	775	775
ν(M-O)	—	528, 500	530, 494	526, 492
ν(M-N)	—	477	478	482