Hydrothermal synthesis, crystal structure and luminescence of a europium complex with phenylmalonic acid and 1, 10-phenanthroline
来源期刊：JOURNAL OF RARE EARTHS2008年第1期
论文作者：LI Yanqiu JU Yanling LI Xia ZHANG Yanbin WANG Chunyan
Key words：europium complex; phenylmalonic acid; crystal structure; luminescence; rare earths;
Abstract: A new complex Eu2(PA)6(phen)2 was prepared with hydrothermal reaction using EuCl3·6H2O, phenylmalonic acid (H2phma), and 1, 10-phenanthroline (phen), where PA was the decarboxylated product of H2phma, phenylacetate. The crystal structure of the title complex was determined with the X-ray diffraction. The title complex was a binuclear molecule with an inversion center. Each Eu3+ ion was nine-coordinated with two nitrogen atoms from one phen molecule and seven oxygen atoms from five PA ligands. The carboxylic groups were bonded to the Eu3+ ion in three modes, the chelating bidentate, the bridging bidentate, and the bridging-chelating tridentate. The complex emits intense red fluorescence under ultraviolet lighL The luminescence peaks correspond to the characteristic emission 5Do→7F,(J=0-4) transitions of the Eu3+ion.
LI Yanqiu1，JU Yanling1，LI Xia1，ZHANG Yanbin1，WANG Chunyan1
(1.Department of Chemistry, Capital Normal University, Beijing 100037, China)
Abstract:A new complex Eu2(PA)6(phen)2 was prepared with hydrothermal reaction using EuCl3·6H2O, phenylmalonic acid (H2phma), and 1, 10-phenanthroline (phen), where PA was the decarboxylated product of H2phma, phenylacetate. The crystal structure of the title complex was determined with the X-ray diffraction. The title complex was a binuclear molecule with an inversion center. Each Eu3+ ion was nine-coordinated with two nitrogen atoms from one phen molecule and seven oxygen atoms from five PA ligands. The carboxylic groups were bonded to the Eu3+ ion in three modes, the chelating bidentate, the bridging bidentate, and the bridging-chelating tridentate. The complex emits intense red fluorescence under ultraviolet lighL The luminescence peaks correspond to the characteristic emission 5Do→7F,(J=0-4) transitions of the Eu3+ion.
Key words:europium complex; phenylmalonic acid; crystal structure; luminescence; rare earths;
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