Synthesis, characterization, thermal and electrical conductance studies of.La(III) complexes with 3-substituted triazole schiff bases

Abstract

Lanthanum (III) complexes of Schiff bases of 3-aminomethyl-4-amino-5- mercapto-1, 2, 4-triazole (1-1V) and 3-methyl-4-amino-5-mercapto-l, 2,4-triazole (V-VIII) have been synthesized and characterised by elemental analysis, spectral and thermal studies. The molar conductance measurement indicates that they are non-electrolytes. The elemental analysis for these complexes shows that the ligands (I - IV) form, the complexes of the type ML,C1.H,0 (where 'L' is a doubly deprotonated ligand) whereas ligands (V-VIII) forms the complexes of the type ML2.C1.H2O (where 'L' is singly deprotonated ligand). in all the complexes La (III) ion shows coordination number of six.. The DC electrical conductivity of La(III) complexes shows semiconductive nature.