Synthesis and Crystal Structure of a Diglycine Dodecaaquo Dierbium Perchlorate

Abstract

Abstract: The title complex[Er₂(Gly)₂(H₂O)₁₂](ClO₄)₆.4H₂) was synthesized.It's crystal structure was determined by four-circle X-ray diffractometer.The crystal is monoclinic with space group P2₁/n.The unit cell parameters are as follows:a=1.0571(2)nm,b=1.0837(2)nm,c=1.7728(4)nm,β=90.09(3)°,V=2.0309(7)nm³,Z=2,D_c=2.239 g/cm³.The final deviation Rand Rw is equal to 0.055 and 0.061 respectively.The two erbium ions in[Er₂(Gly)₂(H₂O)₁₂(ClO₄)₆·4H₂Oare connected with two bridging carboxyl groups.Six water molecules are coordinated to each erbium ion, Therefore, there are eight oxygen atoms coordinated to each erbium, forming a distorted square antiprism arrange ment.

Key words: Erbium complex, Glycine, Crystal structure

TrendMD:

ZHAO Jian-Jun, JIN Tian-Zhu. Synthesis and Crystal Structure of a Diglycine Dodecaaquo Dierbium Perchlorate[J]. Chem. J. Chinese Universities, 1996, 17(4): 519.

References

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