Complexes of light lanthanides with 2, 4-dimethoxybenzoic acid

摘要

The complexes of light lanthanides with 2, 4-dimethoxybenzoic acid of the formula: Ln (C_9H_9O_4)_3·nH_2O where Ln=La(Ⅲ), Ce(Ⅲ), Pr(Ⅲ), Nd(Ⅲ), Sm(Ⅲ), Eu(Ⅲ), Gd(IIII), and n=3 for La(Ⅲ), Gd(Ⅲ), n=2 for Sm(Ⅲ), Eu(Ⅲ), and n=0 for Ce(Ⅲ), Pr(Ⅲ), Nd(Ⅲ) have been synthesized and characterized by lemental analysis, IR spectroscopy, thermogravimetric studies and X-ray diffraction measurements. The Complexes have colours typical for Ln~3+ ions (La, Ce, Eu, Gd-white, Sm-cream, Pr-green, Nd-violet.