Synthesis, Characterization, Cyclic Voltammetry, and Biological Studies of Co(II), Ni(II), and Cu(II) Complexes of a Tridentate Schiff Base, 1-((E)-(2-Mercaptophenylimino) Methyl) Naphthalen-2-ol (H₂L₁)

Table 2

Infrared data of the Schiff base (H₂L) and its corresponding complexes.

Compounds	νC=N	νC-O	νC-S	νC-S asym	νO-H	νS-H	νM-N	νM-O	νM-S	νH2O
H2L1	1612	1238	738	817	3255	2943	—	—	—	—
CuL1	1600	1348	741	824	—	—	522	561	456	—
CoL1	1600	1360	747	837	—	—	501	555	468	3452
NiL1	1608	1375	746	821	—	—	508	575	454	—