Table 10: NMR Spectral Data for Copper(II) Complexes.

Peak / Signal	CP[BTA]A (δ)	CP[BTA]NA (δ)
–CH3-CH2-R	0.87	0.91
–CH2-CH2-R	1.22	1.25
–NH2	3.75-3.85	3.80-3.86
Tautomeric –NH2	7.12	7.25