Synthesis and Characterization of the First Dinuclear Europium (Ⅱ) Complex Supported by Carbon-Bridged Biphenolate Ligand

稀土学报(英文版), 2006, 24(3): 264-267.

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1.Key Laboratory of Organic Synthesis of Jiangsu Province, Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, China

2.Key Laboratory of Organic Synthesis of Jiangsu Province, Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, China

3.Key Laboratory of Organic Synthesis of Jiangsu Province, Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, China

4.Key Laboratory of Organic Synthesis of Jiangsu Province, Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, China

5.Key Laboratory of Organic Synthesis of Jiangsu Province, Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, China

基金项目: 中国科学院资助项目(20472063)

Synthesis and Characterization of the First Dinuclear Europium (Ⅱ) Complex Supported by Carbon-Bridged Biphenolate Ligand

Keywords： inorganic chemistry

Anhydrous EuCl3 reacted with sodium carbon-bridged biphenolate LNa2 [ L = 2,2'-methylene bis (6-tert-butyl-4-methyl-phenoxo] in a 1:1 molar ratio in THF in the presence of HMPA (HMPA = hexamethylphosphoric triamide), then the product formed in situ was reduced by Na-K alloy to generate the divalent carbon-bridged biphenolate europium complex [LEu(HMPA)2]2(THF)4(1) in a good isolated yield. Complex 1 was fully characterized by elemental analysis, NMR and IR spectra, and X-ray structural determination. The crystal data of complex 1 are monoclinic, P21/c space group,a = 1.6521(3) nm, b =2.8274(3) nm, c = 1.2074(2) nm, β = 111.723(6)°, V= 5.2393(14) nm3, Z = 2, Dc =1.259 mg·m-3, μ = 1.304 mm-1, F(000) = 2092, R = 0.0815, wR = 0. 1723. Complex 1 is a dimer with two Eu - O bridges. The coordination geometry of each europium atom can be best described as a distorted trigonal bipyramid.

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材料期刊网

Synthesis and Characterization of the First Dinuclear Europium (Ⅱ) Complex Supported by Carbon-Bridged Biphenolate Ligand

参考文献