Characterization of Ternary Complexes of Rare Earth (La~(3+),Eu~(3+),Tb~(3+)) with α-Naphthoic Acid and 1,10-Phenanthroline

Three new complexes of rare earth with αnaphthoic acid (HNap) and 1,10phenanthroline(phen) were prepared in 95% alcohol solution. These complexes are all of the composition of RE(Nap)3·phen(RE=La,Eu,Tb).Their composition and properties were investigated by elemental analysis,IR spectra,1HNMR、XPS、XRD. Results suggest that the carboxylate ions in αnaphthoate take the bidentate coordination modes.