Table 3: NMR spectral signals (δ) of complex (CLrtT).

     Peak/signal CLrtT(δ)
−CH3−CH2−R      0.979
−CH2−CH2−R      1.256
−CH2−C(=O)OCu      2.354
−CH2−CH2−C(=O)OCu      1.646
-NH2 (broadend peak)      4.22
-NH2 (tautomeric and weak signal)      7.84