| 四磷酸铕钾的晶体结构 |
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| 引用本文： | 胡宁海,林永华,周清廉,刘书珍.四磷酸铕钾的晶体结构[J].应用化学,1984,0(3):47-50. |
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| 作者姓名： | 胡宁海 林永华 周清廉 刘书珍 |
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| 作者单位： | 中国科学院长春应用化学研究所 |
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| 摘 要： | 四磷酸铕钾晶体KEu(PO3)4属单斜晶系,空间群为P21,晶胞参数a=7.932(4)Å,b=8.375(1)Å,C=7.261(3)Å,β=92.05(4)°,V=482.0Å3,Z=2。用PW-1100四圆衍射仪收集衍射强度,独立衍射点数为979。用重原子法解出晶体结构。结构参数采用全矩阵最小二乘法修正,最终的R=0.084。基本结构单元是(PO3)n螺旋带,它们由共角的四面体构成。由氧原子构成铕离子的八配位十二面体。最短的Eu—Eu距离为6.93Å。
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| 收稿时间： | 1984-02-21 |
| 修稿时间： | 1984-04-09 |
CRYSTAL STRUCTURE OF POTASSIUM EUROPIUM METAPHOSPHATE |
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| Hu Ninghai,Lin Yonghua,Zhou Qinglian,Liu Shuzhen.CRYSTAL STRUCTURE OF POTASSIUM EUROPIUM METAPHOSPHATE[J].Chinese Journal of Applied Chemistry,1984,0(3):47-50. |
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| Authors: | Hu Ninghai Lin Yonghua Zhou Qinglian Liu Shuzhen |
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| Institution: | Changchun Institute of Applied Chemistry, Academia Sinica |
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| Abstract: | The crystal of potassium europium metaphosphate KEu(PO3)4 belongs tothe monoclinic space group P21 with unit cell parameters a=7.932(4)Å,b=8.375(1)Å, c=7.261(3)Å, β=92.05(4)°, V=482.0Å3, Z=2. The intensities of 979 independent reflections were collected by the PW-1100 four-circle diffractometer. The structure was solved by heavy-atom method and the final R=0.084 after refining by full-matrix least-squares method.The basic structure units are helical ribbons, (PO3)n, formed by cornersharing tetrahedra of PO4. The coordination of the europium anion by oxygen atoms is eight-fold with the geometry of dodecahedra. The shortest Eu-Eu distance is 6.93Å. |
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