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Sm2NiSn4: The intermediate structure type between ZrSi2 and CeNiSi2
- Source :
-
Journal of Solid State Chemistry . Nov2006, Vol. 179 Issue 11, p3378-3384. 7p. - Publication Year :
- 2006
-
Abstract
- Abstract: A new rare earth nickel stannide, Sm2NiSn4, has been prepared by reacting the pure elements at high temperature in welded tantalum tubes. Its crystal structure was established by single crystal X-ray diffraction studies. Sm2NiSn4 crystallizes in the orthorhombic space group Pnma (No. 62) with cell parameters of a=16.878(2)Å, b=4.4490(7)Å, c=8.915(1)Å, and Z=4. Its structure can be viewed as the intermediate type between ZrSi2 and CeNiSi2. Sm2NiSn4 features two-dimensional (2D) corrugated [NiSn4]6− layers in which the 1D Sn zigzag chains and the 2D Sn square sheets are bridged by Ni atoms. The Sm3+ cations are located at the interlayer space. Results of both resistivity measurements and extended-Hückel tight-binding band structure calculations indicate that Sm2NiSn4 is metallic. [Copyright &y& Elsevier]
- Subjects :
- *NICKEL
*RARE earth metals
*TANTALUM
*X-ray diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 00224596
- Volume :
- 179
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Solid State Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 22469077
- Full Text :
- https://doi.org/10.1016/j.jssc.2006.07.002