| Crystal structure and infrared spectrum of thallium holmium polyphosphate,TIHo（PO3）4 |
| |
| 引用本文： | Karima Horchani-Naifer Jaouher Amami Mokhtar Férid. Crystal structure and infrared spectrum of thallium holmium polyphosphate,TIHo（PO3）4[J]. 中国稀土学报(英文版), 2008, 26(6): 765-769. DOI: 10.1016/S1002-0721(09)60001-6 |
| |
| 作者姓名： | Karima Horchani-Naifer Jaouher Amami Mokhtar Férid |
| |
| 作者单位： | Unité de Recherches de Matériaux de Terres Rares, Centre National de Recherches en Sciences des Matériaux, B.P. 95 Hammam-Lif 2050, Tunisie |
| |
| 基金项目： | Acknowledgements： This work was supported by the Ministry of Higher Education, Scientific Research and Technology of Tunisia. |
| |
| 摘 要： | Crystals of thallium-holmium polyphosphate T1Ho（PO3）4 were grown by flux method technique and characterized by single crystal X-ray diffraction. Structure of T1Ho（PO3）4 was solved for the first time, and it crystallized in the monoclinic P21/n space group with the following unit-cell dimensions： a=1.02225（3） nm, b=0.88536（2） nm, c=1.09541（4） nm, β=105.888（1）°, V=0.95354（5） nm^3 and Z=4. The crystal structure was solved from 2174 independent reflections with final R1（F^2）=0.0442 and Rw（F^2）=0.0861 refined with 164 parameters. The atomic arrangement could be described as a long chain polyphosphate organization. Holmium atoms had eightfold coordination. The structure of T1Ho（PO3）4 consisted of HoO8 polyhedra sharing oxygen atoms with phosphoric group PO4. Infrared spectrum was investigated at room temperature in the frequencies range, 350--4000 cm^-1, showing some characteristic vibration bands of infinite chain structure of PO4 tetrahedra linked by bridging oxygen.
|
| 关 键 词： | 多磷酸盐 钬 晶体结构 红外线光谱学 稀土 |
| 收稿时间： | 2008-01-27 |
Crystal structure and infrared spectrum of thallium holmium polyphosphate, TlHo(PO3)4 |
| |
| Karima Horchani-Naifer, Jaouher Amami,Mokhtar F,#xe;rid. Crystal structure and infrared spectrum of thallium holmium polyphosphate, TlHo(PO3)4[J]. Journal of Rare Earths, 2008, 26(6): 765-769. DOI: 10.1016/S1002-0721(09)60001-6 |
| |
| Authors: | Karima Horchani-Naifer, Jaouher Amami,Mokhtar F rid |
| |
| Affiliation: | aUnité de Recherches de Matériaux de Terres Rares, Centre National de Recherches en Sciences des Matériaux, B.P. 95 Hammam-Lif, 2050, Tunisie |
| |
| Abstract: | Crystals of thallium-holmium polyphosphate TlHo(PO3)4 were grown by flux method technique and characterized by single crystal X-ray diffraction. Structure of TlHo(PO3)4 was solved for the first time, and it crystallized in the monoclinic P21/n space group with the following unit-cell dimensions: a=1.02225(3) nm, b=0.88536(2) nm, c=1.09541(4) nm, β=105.888(1)®, V=0.95354(5) nm3 and Z=4. The crystal structure was solved from 2174 independent reflections with final R1(F2)=0.0442 and Rw(F2)=0.0861 refined with 164 parameters. The atomic arrangement could be described as a long chain polyphosphate organization. Holmium atoms had eightfold coordination. The structure of TlHo(PO3)4 consisted of HoO8 polyhedra sharing oxygen atoms with phosphoric group PO4. Infrared spectrum was investigated at room temperature in the frequencies range, 350–4000 cm−1, showing some characteristic vibration bands of infinite chain structure of PO4 tetrahedra linked by bridging oxygen. |
| |
| Keywords: | polyphosphate holmium crystal structure infrared spectroscopy rare earths |
| 本文献已被 维普 ScienceDirect 等数据库收录！ |
|
