Synthesis and Crystal Structure of a Heteronuclear Complex of Neodymium-Yttrium with Glutamic Acid

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (8): 1105.

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Synthesis and Crystal Structure of a Heteronuclear Complex of Neodymium-Yttrium with Glutamic Acid

WANG Xiao-Qing¹, JiN Tian-Zhu¹, JIN Qing-Ri¹, XU Guang-Xian¹, ZHANG Shi-Wei²

1. Research Centre of Rare Earth Chemistry, Peking University, Beijing, 100871;
2. Institute of Physical Chemistry, Peking University, Beijing

Received:1993-10-12 Revised:1994-01-31 Online:1994-08-24 Published:1994-08-24

Abstract

Abstract: The complex, [Nd_4/3Y_2/3(Clu)₂(H₂O)₈)₄](ClO₄)₁₆·10H₂O was synthesized in aqueous solution and its crystal structure was determined by X-ray diffraction method. The crystal is monoclinic with space group P2₁.The cell parameters are:α=1.1037(5)nm, b=1. 6710(5)nm, c=2.0086(10)nm, β=102.80(4)°, V=3.612(3)nm³, Z=1, D_c=2.0799/cm³. The final Ris 0.058.The complex molecule is an infinite layer built from binuclear polymer. For each central position, the occupation ratio of Nd and Yare 2/3 and 1/3, respectively.The carboxyl group of each glutamic acid that is far from NH₂ is coordinated in terms of tridentate with the central ions by a bridging oxygen atom.So the coordination number is 9, forming a trigontetradecahedron arrangement.

Key words: Heteronuclear complex of Nd-Y, Glutamic acid, Crystal structure

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WANG Xiao-Qing, JiN Tian-Zhu, JIN Qing-Ri, XU Guang-Xian, ZHANG Shi-Wei. Synthesis and Crystal Structure of a Heteronuclear Complex of Neodymium-Yttrium with Glutamic Acid[J]. Chem. J. Chinese Universities, 1994, 15(8): 1105.

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Synthesis and Crystal Structure of a Heteronuclear Complex of Neodymium-Yttrium with Glutamic Acid

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