Ni(II), Cu(II), Mn(II), and Fe(II) Metal Complexes Containing 1,3-Bis(diphenylphosphino)propane and Pyridine Derivative: Synthesis, Characterization, and Antimicrobial Activity

Table 4

Kinetic parameters for the thermal decomposition of Ni(II) and Cu(II) complexes using nonmechanistic equations in dynamic air by Coats–Redfern equation.

Step	[Ni(DPPP)(APY)(H2O)Cl2].H2O				[Cu(DPPP)(APY)(H2O)Cl2]
	n	r	E; kJ mol^−1	Z; s^−1	n	r	E; kJ mol^−1	Z; s^−1
1^st	0.00	0.9968	36.70	7.24 × 10^2	0.00	0.9992	39.15	7.76 × 10^2
	0.33	0.9946	49.63	10.00 × 10^2	0.33	0.9999	46.71	9.33 × 10^2
	0.50	1.0000	57.62	11.48 × 10^2	0.50	1.0000	51.17	10.23 × 10^2
	0.66	0.9998	65.80	13.18 × 10^2	0.66	0.9999	55.46	11.22 × 10^2
	1.00	0.9981	86.53	17.37 × 10^2	1.00	0.9993	65.57	13.18 × 10^2
	2.00	0.9893	169.64	35.48 × 10^2	2.00	0.9958	102.21	20.89 × 10^2
2^nd	0.00	0.9961	74.17	14.79 × 10^2	0.00	0.9574	17.07	3.46 × 10^2
	0.33	0.9972	83.68	16.59 × 10^2	0.33	0.9647	19.99	3.98 × 10^2
	0.50	0.9980	89.07	17.78 × 10^2	0.50	0.9673	21.54	4.26 × 10^2
	0.66	0.9984	94.14	19.05 × 10^2	0.66	0.9703	23.22	4.57 × 10^2
	1.00	0.9989	105.55	21.37 × 10^2	1.00	0.9753	26.91	5.42 × 10^2
	2.00	1.0000	144.22	29.51 × 10^2	2.00	0.9859	40.09	7.94 × 10^2
3^rd	0.00	0.9994	29.22	5.75 × 10^2	0.00	0.9978	17.40	3.46 × 10^2
	0.33	0.9969	34.03	6.76 × 10^2	0.33	0.9992	21.49	4.26 × 10^2
	0.50	0.9951	36.76	7.24 × 10^2	0.50	0.9997	23.86	4.78 × 10^2
	0.66	0.9929	39.59	7.94 × 10^2	0.66	0.9999	26.15	5.24 × 10^2
	1.00	0.9873	46.12	9.12 × 10^2	1.00	1.0000	31.76	6.30 × 10^2
	2.00	0.9678	70.27	14.12 × 10^2	2.00	0.9983	52.30	10.47 × 10^2

Bold values of r represent the best fit values of n, E, and Z.