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

Table 2

¹H NMR spectral data of Schiff bases and their metal complexes.

Compounds	^1H NMR (CDCl3/DMSO-d6) (ppm)
HL^1 [C10H8Cl2N4S]	2.49 (s, 3H, –CH3), 7.35 (dd, 1H, Ar–H), 7.52 (d, 1H, Ar H), 8.08 (d, 1H, ArH), 10.40 (s, 1H, –N=CH–), 11.10 (s, 1H, –SH)
Zn(L^1)OAc·3H2O [C12H16Cl2N4O5SZn]	2.37 (s, 3H, –CH3), 7.41 (dd, 1H, Ar–H), 7.79 (d, 1H, Ar–H), 8.12 (d, 1H, Ar–H), 10.52 (s, 1H, –N=CH–), 2.29 (s, 3H, CH 3COO)
Zn(L^1)2·2H2O [C20H18Cl4N8O2S2Zn]	2.58 (s, 3H, –CH3), 7.47 (dd, 1H, Ar–H), 7.78 (d, 1H, Ar–H), 8.08 (d, 1H, Ar–H), 10.58(s, 1H, –N=CH–)
HL^2 [C11H10Cl2N4S]	2.84 (q, 2H, –CH 2CH3), 1.35 (t, 3H, –CH2CH 3), 7.35 (dd, 1H, Ar–H), 7.52 (d, 1H, Ar–H), 8.07 (d, 1H, Ar–H), 10.55 (s, 1H, –N=CH–), 11.09 (s, 1H, –SH)
Zn(L^2)OAc·3H2O [C13H18Cl2N4O5SZn]	2.67 (q, 2H, –CH 2CH3), 1.22 (t, 3H, –CH2CH 3), 7.43 (dd, 1H, Ar–H), 7.82 (d, 1H, Ar–H), 8.13 (d, 1H, Ar H), 10.61 (s, 1H, –N=CH–), 2.32 (s, 3H, CH 3COO)
Zn(L^2)2·2H2O [C22H22Cl4N8O2S2Zn]	2.66 (q, 2H, –CH 2CH3), 1.18 (t, 3H, –CH2CH 3), 7.55 (dd, 1H, Ar–H), 7.83 (d, 1H, Ar–H), 8.13 (d, 1H, Ar H), 10.60 (s, 1H, –N=CH–)