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 5

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

Step	[Mn(DPPP)(APY)(H2O)Cl2]				[Fe(DPPP)(APY)(H2O)Cl2].2H2O
	n	r	E; kJ mol^−1	Z; s^−1	n	r	E; kJ mol^−1	Z; s^−1
1^st	0.00	0.9951	14.92	3.01 × 10^2	0.00	0.9926	25.16	5.01 × 10^2
	0.33	0.9909	18.16	3.71 × 10^2	0.33	0.9947	31.48	6.30 × 10^2
	0.50	0.9886	20.07	3.98 × 10^2	0.50	0.9961	35.09	6.91 × 10^2
	0.66	0.9860	21.98	4.36 × 10^2	0.66	0.9968	38.89	7.76 × 10^2
	1.00	0.9812	26.57	5.24 × 10^2	1.00	0.9978	47.34	9.33 × 10^2
	2.00	0.9664	43.24	8.70 × 10^2	2.00	0.9996	78.89	15.8 × 10^2
2^nd	0.00	0.9926	33.75	6.76 × 10^2	0.00	0.9934	128.37	25.70 × 10^2
	0.33	0.9970	41.08	8.12 × 10^2	0.33	0.9920	140.46	28.18 × 10^2
	0.50	0.9984	45.26	8.91 × 10^2	0.50	0.9917	146.58	29.51 × 10^2
	0.66	0.9994	49.73	10 × 10^2	0.66	0.9913	152.69	30.90 × 10^2
	1.00	1.0000	60.19	12.02 × 10^2	1.00	0.9904	166.68	33.88 × 10^2
	2.00	0.9952	100.23	19.95 × 10^2	2.00	0.9870	210.84	41.68 × 10^2

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