Guo Qian-Ling, Zhu Wen-xiang, Guo Rong
Aug 26, 2010
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Journal
Chinese Journal of Chemistry
Abstract
The complex Eu(btfa)3 (phen) (btfa=4,4,4-trifluoro-1-phenyl-1, 3-butanedione, phen = 1,10-phenanthroline) has been prepared and characterized by elemental analysis, IR and UV spectroscopies. The crystal and molecular structures of the complex have been determined by X-ray diffraction analysis. It belongs to the monoclinic crystal system, space group P21/c with a = 0.9700(2) nm, b = 3.7450(5) nm, c = 1.0917(3) nm, β = 92.51(2)°, V = 3.962(1) nm5, Z = 4, Dc = 1.639 g/cm3, μ = 1.676 mm−1, F(000) = 1936, R1, = 0.0388, wR2 = 0.0775. Structure analysis shows that the europium(III) ion is coordinated to six oxygen atoms of β-diketonate anions and two nitrogen atoms of phenanthroline molecule. The coordination polyhedron is an approximate square antiprism.