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

Table 2

Thermal analysis data.

			TG
Molecular formula of the complex	DTA peak	Temperature	Weight loss %		Decomposition product
	temp (°C)	range (°C)	Observed	Calculated
[LaN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	103(+); 220(−)	40–270	18.5	18.5	La{CH2(COO)CH(SH)(COO)}1.5
	311(−); 590(−)	270–650	63.0	63.3	La2O3
[PrN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	95(+); 280(−)	40–290	18.3	18.4	Pr{CH2(COO)CH(SH)(COO)}1.5
	309(−); 563(−)	290–650	59.9	61.7	Pr6O11
[NdN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	93(+); 280(−)	40–290	18.0	18.0	Nd{CH2(COO)CH(SH)(COO)}1.5
	311(−); 550(−)	290–650	61.5	62.0	Nd2O3
[SmN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	95(+); 290(−)	40–300	17.9	18.0	Sm{CH2(COO)CH(SH)(COO)}1.5
	325(−); 572(−)	300–650	58.9	61.6	Sm2O3
[GdN2H42{CH2(COO)CH(SH)(COO)}1.5] ·(H2O)	95(+); 290(−)	40–300	17.9	17.8	Gd{CH2(COO)CH(SH)(COO)}1.5
	323(−); 594(−)	300–650	59.6	60.0	Gd2O3

(+) endotherm and (−) exotherm.