Spectrophotometeric Studies of Formation Constant of Lanthanide Complexes

Gourav Chawla¹, H. K. Pandey¹, Seema Gakhar² and Arti Chawla¹

¹Rare Earth Research Laboratory, P. G. Department of Chemistry, Govt. Dungar College, Bikaner (India). ^²Department of Chemistry, M. N. Institute of Applied Science, Bikaner (India)

The formation constant of Tm(III)-systems with different sulphonanilide ligand namely 3-carboxy-4-hydroxy-2’-chloro benzene sulphonanilide, 3-carbmethoxy-4-hydroxy-2’-chloro benzene sulphonanilide and 3-carbethoxy-4-hydroxy-2’-chloro benzene sulphonanilide have been determined with the help of spectrophotometeric method. Results shows that the stability of lanthanide complexes is found similar to [Ag(NH3)2]+ type of complex

Formation constant; Tm(III)-sulphonanilide complex