113971-46-3Relevant articles and documents
Characterization and Formation Constants of La(III), Ce(III), Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Tb(III), Dy(III), Ho(III), Er(III), Tm(III), Yb(III) and Lu(III) Complexes of Schiff Base Derived from Sulphanilamide and Salicylaldehyde
Khan, L. A.,Siddiqi, K. S.,Khan, N. H.,Kureshy, R. I.,Zaidi, S. A. A.
, p. 969 - 971 (2007/10/02)
A few lanthanide complexes of the type ML3*2H2O where LH is a schiff base derived from sulphanilamide and salicylaldehyde have been synthesized and characterized on the basis of their elemental analysis, infrared spectra and molar conductance measurements.The schiff base acts as a monobasic bidentate ligand and the complexes appear to be eight coordinated.The pH-metric studies have been carried out to determine the proton-ligand stability constants of the ligand and metal-ligand stability constants of its complexes at 25 deg C and 0.1 M ionic strength.The stability constants of these rare earth complexes follow the order: Ce > Dy > Pr > Lu > Tm > Eu > La > Yb > Er > Nd > Ho > Tb > Sm > Gd.