Crystal Structure and Luminescence of a Europium Coordination Polymer {[Eu(p-MOBA)_3·2H_2O]·0.5H_2O· 0.5(4,4′-bipy)}_∞  

作　　者：李夏 金林培 万永红 吕少哲 张家骅 

出　　处：《Chinese Journal of Chemistry》2002年第4期352-357,共6页中国化学（英文版）

基　　金：StateKeyProjectofFundamentalResearch (No .G19980 6 130 8) ,theNationalNaturalScienceFoundationofChina (No .2 99710 0 5)andNaturalScienceFoundationofBeijing (No.2 982 0 0 9)

摘　　要：The structure of the complex {[ Eu (p-MOBA )_3·2H_2O ]·0.5H_2O·0.5(4,4′-bipy)}_∞ (p-MOBA: p-methoxybenzoate, 4, 4′-bipy: 4, 4′-bipyridine) was determined by singlecrystal X-ray diffraction study. Each europium atom is coordinated with two oxygen atoms of thechelated carboxyl group, four oxygen atoms of the four bidentate bridging carboxylate groups and twooxygen atoms of two water mole-cules, forming an infinite polymeric chain structure. Excitation andluminescence spectra were observed at 77 K. The high resolution spectrum of the complex shows thatthe europium ion site in the crystal has low symmetry. The complex displays intense luminescencewhich may be related to the p-MOBA ligand and the polymeric coordination.The structure of the complex {[ Eu (p-MOBA )_3·2H_2O ]·0.5H_2O·0.5(4,4′-bipy)}_∞ (p-MOBA: p-methoxybenzoate, 4, 4′-bipy: 4, 4′-bipyridine) was determined by singlecrystal X-ray diffraction study. Each europium atom is coordinated with two oxygen atoms of thechelated carboxyl group, four oxygen atoms of the four bidentate bridging carboxylate groups and twooxygen atoms of two water mole-cules, forming an infinite polymeric chain structure. Excitation andluminescence spectra were observed at 77 K. The high resolution spectrum of the complex shows thatthe europium ion site in the crystal has low symmetry. The complex displays intense luminescencewhich may be related to the p-MOBA ligand and the polymeric coordination.

关 键 词：europium p-methoxybenzoate dihydrate X-ray crystallography LUMINESCENCE 

分 类 号：O634[理学—高分子化学]