| 新型混价稀土氟化物KEu(Ⅱ)Ce(Ⅲ)F6 |
| |
| 引用本文： | 贯军,汤中佳.新型混价稀土氟化物KEu(Ⅱ)Ce(Ⅲ)F6[J].高等学校化学学报,1994,15(11):1592-1596. |
| |
| 作者姓名： | 贯军 汤中佳 |
| |
| 作者单位： | 北京师范大学化学系, 北京, 100875 |
| |
| 摘 要： | 用碱金属热还原法合成了含有混价稀土的新型氟化物KEuCeF6,用组成分析、X射线衍射、光电子能谱和荧光光谱对新化合物的组成、结构和稀土离子的氧化态进行了表征。KEuCeF6的晶体属gagarinite(钠钙钇氟石)和UCl3结构的相关型。空间群P3 ,a=645.4(2)pm,c=373.0(1)pm,c/α=0.578,Z=1;其中的铕和铈的氧化态分别为+2和+3.
|
| 关 键 词： | 稀土 铕(Ⅱ) 氟化物 晶体结构 钠钙钇氟石 |
| 收稿时间： | 1993-12-04 |
Novel Mixing Oxidation State Rare Earth Fluoride KEuCeF6 |
| |
| GUAN Jun,TANG Zhong-Jia, WU Guo-Qing.Novel Mixing Oxidation State Rare Earth Fluoride KEuCeF6[J].Chemical Research In Chinese Universities,1994,15(11):1592-1596. |
| |
| Authors: | GUAN Jun TANG Zhong-Jia WU Guo-Qing |
| |
| Institution: | Department of Chemistry, Beijing Nomal university, Beijing, 100875 |
| |
| Abstract: | Novel mixed oxidation state rare earth fluoride KEuCeF6 was synthesized by reducing tysonite structure type mixed rare earth trifluoride with metallic potassium vapor.The new compound was characterized by chemical analysis. X-ray powder diffraction, XPSand fluorescence spectra.The new compound has a stuffed structure of UCl3, related to NaNdF4 and gagarinite.Crystal system:Trigonal;space group: P3 ;Bravais lattice type hPwith lattice parameters a=645.4(2)pm, c=373. 0(1)pm, c/a=0.578. V=134. 65(12)×106pm6, Z=1, Dx=5.49g·cm-3, Dpyc=5.42g·cm-3. |
| |
| Keywords: | Rare earth Europium Fluoride Crystal structure Gagarinite |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《高等学校化学学报》浏览原始摘要信息 |
| 点击此处可从《高等学校化学学报》下载免费的PDF全文 |
|
