Co(II) and Cd(II) Complexes Derived from Heterocyclic Schiff-Bases: Synthesis, Structural Characterisation, and Biological Activity

Table 2

IR frequencies (cm⁻¹) of the compounds.

Compound	ν (O–H)	ν (N–H)	ν (C=O)	ν (C=N)	ν (C–O)	ν (C–S)	ν (O–CH3)	ν (M–O)	ν (M–N)
L^1	3473	3203	1664	1629	1271	—	1157	—	—
[Co^II (L^1)2]Cl2	3529	3404	1641	1600	1257	—	1124	619	549
[Cd^II (L^1)2]Cl2	3450	3226	1643	1613	1263	—	1126	698	540
L^2	3375	3163	1669	1618	1265	846, 1361	1134	—	—
[Co^II (L^2)2]Cl2	3448	3147	1647	1603	1203	817, 1303	1147	650	404
[Cd^II (L^2)2]Cl2	3373	3209	1649	1608	1223	844, 1342	1149	678	416