Synthesis and Crystal Structrue of H8DOTP and Its Erbium Complex

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (2): 176.

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Synthesis and Crystal Structrue of H₈DOTP and Its Erbium Complex

WANG Xiao-Qing¹, YANG Wei-Chun¹, JIN Tian-Zhu¹, XU Guang-Xian¹, MA Zhe-Sheng²

1. Research Centre of Rare Earth Chemistry, Peking Univeristy, Beijing, 100871;
2. University of Geoscience of China, Beijing

Received:1994-05-12 Revised:1994-07-26 Online:1995-02-24 Published:1995-02-24

Abstract

Abstract: The ligand 1,4,7,100-tetraazacyclodoecane-1,4,7,10-tetrakis(methylenephosphonic acid),abbreviated to H₈DOTP,was synthesized and its crystal structure was determined by X-ray diffraction method.The crystal is monoclinic with space group P₂/a.The cell parameters are a=1.8113(4) nm,b=1.4452(3) nm,c=1.8215(4)nm,β=97.64(3)°,V=4.7660(18) nm³,Z=4,D_c=1.528g/cm³.The final Ris 0.078,R_w=0.083.And H₈DOTP complex with erbium was synthesized in aqueous solution.

Key words: Tetraazacyclododecane tetrakis(methylenephosphonic acid), Crystal structure, Erbium complex

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WANG Xiao-Qing, YANG Wei-Chun, JIN Tian-Zhu, XU Guang-Xian, MA Zhe-Sheng. Synthesis and Crystal Structrue of H₈DOTP and Its Erbium Complex[J]. Chem. J. Chinese Universities, 1995, 16(2): 176.

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Synthesis and Crystal Structrue of H₈DOTP and Its Erbium Complex

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