Transition Metal Complexes of Mixed Bioligands: Synthesis, Characterization, DFT Modeling, and Applications

Table 9

Thermodynamic parameters for the adsorption of (0.04 × 10⁻²) M/L mixed ligands and their metal complexes on aluminum metal in aqueous solution of 1 M HCl at different temperatures for 7 hrs.

Compound	Temp. (K)	Corrosion rate ×10^−4 (g· h^−1· cm^−2)	IE%	(kJ·mol^−1)	(kJ·mol^−1)	(kJ·mol^−1)	(kJ·mol^−1·K^−1)
Blank	293	3.47	—	66.002	47.556	52.080	−0.0149
	303	7.32	—
	313	11.58	—
Mixed ligand (Arg: Glu) ratio (1 : 1)	293	1.8	48	69.528	61.191	53.268	0.0262
	303	4.76	35
	313	8.34	28
(1)	293	0.97	72	58.822	46.517	54.165	−0.0252
	303	1.76	76
	313	2.90	76
(2)	293	1.53	56	60.459	43.025	55.510	−0.0412
	303	3.22	56
	313	4.98	57
(3)	293	1.63	53	61.845	41.030	56.139	−0.0499
	303	3.37	54
	313	5.21	55
(4)	293	0.73	79	57.688	45.810	54.035	−0.0271
	303	1.54	79
	313	2.08	82