| THE CRYSTAL STRUCTURE OF RARE EARTH COMPLEX WITH AMINO ACIDS Ⅱ The Crystal Structure of Gtutamate Comptex of Erbium Perchtorate |
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| 作者姓名： | Zeng Lin WANG Ning Hai HU Chun Li NIU Kui Yue YANG Jia Zan NI |
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| 作者单位： | Changchun Institute of Applied Chemistry, Chinese Acadimia Sinica, Changchun, 130022 |
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| 摘 要： | The crystat structure of {Er_2(L—Glu)_2(H_2O)_6](ClO_4)_2·3H_2O)_2 has been studied by X-ray diffraction. The crystal is monoctinic with space group P2_1 and cell parameters a=19.987(3) , b=16.505(3) , c=11.040(2) , β=104.69(1)~o, V=3538(1) , 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 2.439 and 2.41 respectivety. The finat R and Rw are 0.043 and 0. 058, respectivety.
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THE CRYSTAL STRUCTURE OF RARE EARTH COMPLEX WITH AMINO ACIDS Ⅱ The Crystal Structure of Gtutamate Comptex of Erbium Perchtorate |
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| 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. |
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| Authors: | Zeng Lin WANG Ning Hai HU Chun Li NIU Kui Yue YANG Jia Zan NI |
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| Institution: | Changchun Institute of Applied Chemistry, Chinese Acadimia Sinica, Changchun, 130022 |
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| Abstract: | 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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