Studies on Rare Earth Complexes of Quaternary Ammonium Salt(Ⅶ)──Synthesis,Characterization and Structure of Tetrabutylammonium Dinitrato Tetraisothiocyanato Erbiumate

Abstract

Abstract: Aseries of new type mixed ligand complexes were synthesized.The general for-mula was C₅₂H₁₀₈L₄ N₉O₆S₄, Ln=Eu, Dy, Er,Yb,Y.The IRspectra of the complexes werestudied. Their mor conductivity shows they are 3:1 type electrolytes and the ionic crys-tals. The single crystal structure of the title complex was determined by a X-ray analysis.The crystal is rhombic, space group P_nnn,with unit cell dimensions:a=1.2470(7)nm,b=1.2934(3)nm,c=2. 1112(6)nm,Z=2,R=0.066.Erbium is coordinated by 4 oxygenatoms of two bidentate nitrate groups, and 4 nitrogen atoms of four thiocyanates,so the oo-ordination number is 8.The bond lengths of Er Oand Er Nare 0. 2386 nm and 0.2457nm respectively. The polyhedron skeleton around Er³⁺ is a distorted dodecahedron.

Key words: Rare earth mixed ligand complex, Structure, Tetrabutylammonium dinitrato te-traisothiocyanato erbiumate

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YAN Chun-Hua, ZHANG Ya-Wen, JIA Jian-Tao, LI Biao-Guo, HUANG Chun-Hui. Studies on Rare Earth Complexes of Quaternary Ammonium Salt(Ⅶ)──Synthesis,Characterization and Structure of Tetrabutylammonium Dinitrato Tetraisothiocyanato Erbiumate[J]. Chem. J. Chinese Universities, 1996, 17(1): 1.

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Studies on Rare Earth Complexes of Quaternary Ammonium Salt(Ⅶ)──Synthesis,Characterization and Structure of Tetrabutylammonium Dinitrato Tetraisothiocyanato Erbiumate

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