Table 1. Calculated IR Values (in cm^–1) for the Cu(II) Complexes in Methanol at the SMD/B3LYP/6-31+G(d) Level of Theory.

	ν(C=N)	ν(C–O)	ν(Cu–O)	ν(Cu–N)	ν(C=C)	ν(C–H)	ν(O–H)
1	1572.02–1552.34	1292.28–1283.72	455.01–436.16	408.47	1612.02–1589.71	3221.64–3217.07	3708.86–3708.35
2	1575.48–1562.37	1299.36–1296.15	442.35	430.36	1612.48–1579.71	3221.90–3213.60	3716.71–3706.91
3	1577.77–1565.65	1281.07–1275.39	468.68	411.82	1614.83–1588.56	3226.14–3221.38	3722.35–3710.83