| 铈、镨二乙基磷酸盐的晶体结构 |
| STRUCTURES OF CERIUM AND PRASEODYMIUM DIETHYL PHOSPHATES |
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| 摘要: 合成了Ce[PO2(OC2H5)2]3和Pr[PO2(OC2H5)2]3(简称Ce(DEP)3和Pr(Pr(DEP)3)。用四圆衍射仪测定了其晶体结构。它们均属三斜晶系,空间群P1。晶胞参数,对Ce(DEP)3:α=10.324(4)A,b=12.861(4)A,c=13.998(5)A,x=106.49(3)°,β=112.83(4)° γ=115.61(3)°,V=1296(1)A3,Z=2;对Pr(DEP)3:α=10.27(1)A,b=11.81(1)A,c=12.51(1)A,x=109.93(9)°,β=111.9(9)°,γ=93.0(1)°,V=1293(3)A3,Z=2。用Patterson法并经分块全矩阵最小二乘法修正,最后的R值,Ce的为0.1071,Pr的为0.1066。结构分析指出,两种配合物结构类似,Ce和Pr原子均由二乙基磷酸根的六个氧原子配位形成八面体构型。 |
| 关键词: Ce Pr 晶体结构 |
| 基金项目: |
| Abstract: The crystal structures of the title compounds are determined by RASAⅡS RIGAKU four circle diffractometer. 3829 independent reflections were collected for Ce and 3223 for Pr. Both of the crystals belong to triclinic, space group P1, with cell dimensions, Ce:a= 10.324(4)Å, b= 12.861(4)Å,c=13.998(5)Å, α=106.49(3)°,β=112.83(4)°,γ=115.61(3)°,V= 1296(1)Å3, Z=2. Pr:a=10.27(1)Å, 6=11.81(1)Å, c= 12.51(1)Å, α=109.93(9)°, β=111.9(9)°, Z= 93.0(1)°, V= 1293(3)Å3, Z = 2. The structures were solved by Patterson method and refined by block least squares rutine. The final deviation factors were R = 0.1071 for Ce, R = 0.1066 for Pr. All the calculations have been undertaken with PANAFACOM U-1500 computer. The structure analysis shows that the cerium is coordinated by six oxygen atoms of diethyl phosphate ions to form an octahedral configuration shown in Fig.1 and Fig.2. The structure features of Pr complex arc similar to those for Ce.The relationship between the crystal data and atomic numbers of rare earths has been discussed. |
| Keywords: Cerium praseodymium crystal structure |
| 投稿时间：1987-10-21 |
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| 韩玉真,潘佐华,施倪承,廖立兵,刘承敏,吴国庆,汤中佳,肖养田.铈、镨二乙基磷酸盐的晶体结构[J].无机化学学报,1990,6(1):17-24. |
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