Synthesis and Crystal Structure of Gadolinium Mononuclear Complex with Triethylenetetraaminehexaacetic Acid

Abstract

Abstract: The gadolinium complex with triethylenetetraaminehexaacetic acid (abbreviated as H-6ttha), (NH₄)₂[Gd(Httha)]·6H₂O was synthesized in aqueous solution, and its crystal structure was determined by X-ray fourcycle diffraction method. The crystaLIs monoclinic, space group P2₁/c, with a=1.0400(4) nm, b=1.2761(4) nm, c=2.3132(4) nm, β=90.89(3), V=3.070(2) nm³, Z=4, D_c=1.709 g/cm³. The complex was a mononuclear molecule, each gadolinium ion is coordinated by four nitrogen atoms and five carboxyl oxygen atoms from one Httha, forming a coordination polyhedron of mono capped square antiprism.

Key words: Gadolinium complex, Triethylenetetraaminehexaacetic acid, Crystal structure

CLC Number:

O614.33

TrendMD:

WANG Rui-Yiao, ZHANG Hua-Jie, JIN Tian-Zhu, ZHOU Zhong-Yuan, ZHOU Xiang-Ge . Synthesis and Crystal Structure of Gadolinium Mononuclear Complex with Triethylenetetraaminehexaacetic Acid[J]. Chem. J. Chinese Universities, 1999, 20(2): 176.

References

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