Metal-Based Biologically Active Compounds: Synthesis, Spectral, and Antimicrobial Studies of Cobalt, Nickel, Copper, and Zinc Complexes of Triazole-Derived Schiff Bases

Table 1

IR spectral data of the ligands and their metal complexes (cm⁻¹).

Compound	ν(N=CH)	ν(C–S)	ν(S–H)	ν(OOCCH3)	ν(H2O/OH)	ν(M–S)	ν(M–N)
HL^1	1595	—	2732	—	—	—	—
Co(L^1)(OAc)·3H2O	1585	741	—	1744	3426	338	498
Co(L^1)2·2H2O	1585	743	—	—	3488	334	494
Ni(L^1)(OAc)·3H2O	1587	749	—	1742	3471	342	510
Ni(L^1)2·2H2O	1588	733	—	—	3394	339	514
Cu(L^1)(OAc)·H2O	1590	748	—	1744	3310	345	513
Cu(L^1)2	1589	750	—	—	—	348	491
Zn(L^1)(OAc)·3H2O	1588	745	—	1750	3441	352	489
Zn(L^1)2·2H2O	1585	748	—	—	3440	348	492
HL^2	1597	—	2703	—	—	—	—
Co(L^2)(OAc)·3H2O	1585	733	—	1738	3294	344	485
Co(L^2)2·2H2O	1586	741	—	—	3310	338	488
Ni(L^2)(OAc) ·3H2O	1585	771	—	1744	3280	338	489
Ni(L^2)2·2H2O	1587	755	—	—	3287	335	492
Cu(L^2)(OAc)·H2O	1585	733	—	1746	3400	343	503
Cu(L^2)2	1586	733	—	—	—	348	503
Zn(L^2)(OAc)·3H2O	1589	748	—	1740	3318	347	500
Zn(L^2)2·2H2O	1589	771	—	—	3310	349	497