N. Kameta, H. Imura, K. Ohashi
Apr 1, 1999
Citations
0
Influential Citations
9
Citations
Journal
Inorganic Chemistry Communications
Abstract
Abstract Complexation equilibrium between tris(1-(2-thienyl)-4,4,4-trifluoro-1,3-butanedionato)lanthanoids(III) (Ln(tta)3, Ln=La, Eu, and Lu) and tris(2,4-pentanedionato)cobalt(III) (Co(acac)3) has been studied by the liquid–liquid distribution technique. A 1:1 adduct of [Ln(tta)3Co(acac)3], i.e., a binuclear complex, was formed in benzene, and the stability constants were determined to be 104.64, 102.95, and 102.07 for La, Eu, and Lu respectively. The molar absorptivity of Co(acac)3 for the 1T1g←1A1g transition increased with the adduct formation with Ln(tta)3 in the order of Lu≪Eu