Crystal Structure and Spectra of Ln(p-ABA)3bpy·2H2O Complexes

Abstract

Abstract: Syntheses of Ln(p-ABA)₃bpy·2H₂O(Ln=Nd, Eu, Yb, p-ABA: p-aminoben-zoate, bpy: bipyridine) and their crystal structure, Raman and fluorescence spectra are re-ported. The crystal belongs to triclinic system with space group P1 The coordination number of the central atom is eight. There are three coordinated modes for carboxylate groups: unidentate, bidentate and bridged. Raman spectra of the complexes indicate that there are more than one coordinated modes for the carboxylate groups. This is in good agreement with the result of X-ray analysis. The high resolution spectra of Eu(p-ABA)₃bpy·2H₂O show only one Eu(Ⅲ) ion site in the complex. The symmetry for the Eu(Ⅲ) site is C₁.

Key words: Lanthanide complexes, Crystal structure, Raman spectra, Fluorescence spectra

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ZHENG Xiao-Mei, JIN Lin-Pei, WANG Ming-Zhao, ZHANG Jia-Hua, LU Shao-Zhe . Crystal Structure and Spectra of Ln(p-ABA)₃bpy·2H₂O Complexes[J]. Chem. J. Chinese Universities, 1995, 16(7): 1007.

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Crystal Structure and Spectra of Ln(p-ABA)₃bpy·2H₂O Complexes

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