Abstract
A binuclear europium complex [Eu(m-BrBA) 3(H 2O)(phen)] 2 (1) has been obtained in the ethanol solution and characterized structurally by X-ray diffraction, where m-BrBA=m-bromobenzoate and phen=1,10-phenanthroline. Each Eu 3+ ion is eight-coordinated to one 1,10-phenanthroline molecule, one monodentate carboxylate group, one water molecule and four bridging carboxylate groups in which the carboxylate groups are bonded to the europium ion in two modes: the monodentate and the bridging bidentate. Excitation and luminescence data observed at room temperature show that the title complex emits red fluorescence under ultraviolet light. The results of thermal analysis indicate that the complex [Eu(m-BrBA) 3(H 2O)(phen)] 2 is quite stable to heat.
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