Spectral Investigation and In Vitro Antibacterial Evaluation of Ni^II and Cu^II Complexes of Schiff Base Derived from Amoxicillin and α-Formylthiophene (αft)

Table 4

The ¹³C NMR spectral data (δ, ppm) of the free ligand and metal complexes.

Ligand (HL)	Assignment	Chemical shift δ ppm
	C-1	157.594
	C-3	172.668
	C-5	170.8
	C-7	26.909
	C-8	26.909
	C-9	73.378
	C-10	178.399
	C-11	39.928
	Ar-C	115.652, 121.217, 128.318, 129.44, 136.56, 138.423, 145.635
	DMSO	39.65