title: [Synthesis and spectral characterization of rare-earth-3-hydroxyl-2-naphthalinate-phenanthroline compounds].
abstract: The solid rare-earth (RE=Tb, Eu, Sm, Nd) compounds with 3-hydroxyl-2-naphthalinic acid (L) and phenanthroline (phen) were synthesized in ethanol solution in the present work. Their compositions were determined to be REL4 x phen2 x Na x H2O by the element analysis, infrared and ultraviolet absorption spectra, and DTA-TGA, respectively. The spectral properties of the compounds were studied tentatively, and the coordination mode of carboxyl group was deduced to be bridged style to chelate the rare-earth and sodium ions to form an infinite chain structural complex. The sodium and rare-earth ions are six-coordinated and eight-coordinated geometry respectively.
authors.affiliation: Department of Chemistry, Capital Normal University, Beijing, China.
authors.forename: Yu-heng
authors.initials: YH
authors.lastname: Deng
authors.forename: Shao-ting
authors.initials: ST
authors.lastname: Wang
authors.forename: Yong-li
authors.initials: YL
authors.lastname: Yang
authors.forename: Feng-mei
authors.initials: FM
authors.lastname: Nie