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 1

Elemental analysis and physical properties measurement data.

Compound	Mol. formula	Mol. wt.	Colour	m. pt. (°C)	Calculated (found) (%)						pH
					C	H	N	O	S	M
HL	C22H23N3O5S2	473.57	Bright yellow	195	55.80 (55.68)	4.90 (4.91)	8.87 (8.82)	16.89 (16.75)	13.54 (13.59)	—	4.97
Ni(Haαft)2	C44H44N6NiO10S4	1003.81	Brown	230	52.65 (52.67)	4.42 (4.421)	8.37 (8.29)	15.94 (15.87)	12.78 (12.75)	5.85 (5.94)	2.98
Cu(Haαft)2	C44H44CuN6O10S4	1008.66	Black	220	52.39 (52.50)	4.45 (4.55)	8.33 (8.21)	15.86 (15.81)	12.72 (12.80)	6.30 (6.15)	2.5