Synthesis and Thermal Characterization of Lanthanide(III) Complexes with Mercaptosuccinic Acid and Hydrazine as Ligands

Table 4

Kinetic parameters of the complexes.

Complex	Reaction	𝐸 in			Δ𝑆 in
		KJ/mole	A/min^−1	𝑛	KJ/Kelvin
[LaN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	Dehydration	55.8	4.8 × 10^6	3	0.029
	Decomposition	13.7	2.4 × 10^11	0.1	0.068
[PrN2H42{CH2(COO)-CH(SH)(COO)}1.5] ·(H2O)	Dehydration	15.0	1.0 × 10^9	3	0.049
	Decomposition	25.9	8.1 × 10^7	3	0.039
[NdN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	Dehydration	39.1	1.2 × 10^7	3	0.033
	Decomposition	143.6	1.2 × 10^12	3	0.074
[SmN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	Dehydration	18.2	7.4 × 10^7	3	0.039
	Decomposition	108.3	1.7 × 10^10	1.9	0.059
[GdN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	Dehydration	63.2	5.6 × 10^5	0.1	0.021
	Decomposition	54.9	1.5 × 10^6	3	0.025