DNA Cleavage, Cytotoxic Activities, and Antimicrobial Studies of Ternary Copper(II) Complexes of Isoxazole Schiff Base and Heterocyclic Compounds

Table 2

Some important IR absorption frequencies (cm⁻¹) of Schiff bases and metal complexes.

Compound	𝑣(OH)	𝑣(HC=N)	𝑣(C–O)	𝑣(M–O)	𝑣(M–N)	Other bands
DMIIMBP	3446	1641	1182	—	—	𝑣(C–Br) 779
[Cu(DMIIMBP)(phen)ClO4]	—	1620	1164	550	448	𝑣(Cl–O) 1070, 1104, 1148
[Cu(DMIIMBP)(bipy)ClO4]	—	1614	1162	548	445	𝑣(Cl–O) 1034, 1058, 1110
[Cu(DMIIMBP)(oxine)]	—	1607	1167 and 1113	550	410	—
[Cu(DMIIMBP)(5-Cl-oxine)]	—	1618	1159 and 1133	543	454	𝑣(C–Cl) 780
DMIIMCP	3453	1605	1183	—	—	𝑣(C–Cl) 778
[Cu(DMIIMCP)(phen)ClO4]	—	1622	1164	552	434	𝑣(Cl–O) 1071, 1104, 1148
[Cu(DMIIMCP)(bipy)ClO4]	—	1618	1162	550	419	𝑣(Cl–O) 1036, 1059, 1112
[Cu(DMIIMCP)(oxine)]	—	1609	1189 and 1109	521	414	—
[Cu(DMIIMCP)(5-Cl-oxine)]	—	1633	1183 and 1128	549	421	𝑣(C–Cl) 776