Citation: Zeng Lin WANG, Ning Hai HU, Chun Li NIU, Kui Yue YANG, Jia Zan NI. THE CRYSTAL STRUCTURE OF RARE EARTH COMPLEX WITH AMINO ACIDS Ⅱ The Crystal Structure of Gtutamate Comptex of Erbium Perchtorate[J]. Chinese Chemical Letters, ;1991, 2(12): 961-962. shu

THE CRYSTAL STRUCTURE OF RARE EARTH COMPLEX WITH AMINO ACIDS Ⅱ The Crystal Structure of Gtutamate Comptex of Erbium Perchtorate

Changchun Institute of Applied Chemistry, Chinese Acadimia Sinica, Changchun, 130022

Received Date: 2 September 1991

The crystat structure of {[Er₂(L-Glu)₂ (H₂O)₆] (ClO₄)₂·3H₂O)₂ has been studied by X-ray diffraction. The crystal is monoctinic with space group P2₁ and cell parameters a=19.987(3)Å, b=16.505(3)Å, c=11.040(2)Å, β=104.69(1)°, V=3538(1)Å³, Z=2, Dc=2.29 g. cm^-3, μ=53.2 cm^-1, F(000)=2384. The asymmetric unit contains two complex motecules and four centre ions. Each erbium (Ⅲ) is coordinated by five oxygen donors from four different glutamates and four oxygen donors from the aqua ligand to form a nine coordination potyhedron. The mean distances of Er-0 (carboxylate) and Er-Ow are 2.439Å and 2.416Å respectivety. The finat R and Rw are 0.043 and 0.058, respectivety.
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