Range, Klaus-Jürgen and Grosch, Georg H. and Andratschke, Martina (1996) Studies on AB(2)-type intermetallic compounds .5. The crystal structure of Mg9Sn5, a supposed high-pressure modification of Mg2Sn. JOURNAL OF ALLOYS AND COMPOUNDS, 244 (1-2). pp. 170-174. ISSN 0925-8388, 1873-4669
Full text not available from this repository.Abstract
Single crystals of Mg9Sn5 have been obtained from the elements by high-pressure high-temperatures reaction in a modified Belt-type apparatus (Ta capsule, 50 kbar, 1400-->500 degrees C, and subsequent quenching to ambient conditions). The compound crystallizes trigonally, space group R3, with a = 13.222(2), c = 13.150(2) Angstrom, c/a = 0.9946 and Z = 6. Final residuals after refinement against F-2 were R(1) = 0.0297, wR(2) = 0.0811 and S = 0.927 for 85 refined parameters and 975 unique reflections. The crystal investigated showed obverse-reverse twinning and a pronounced pseudo-symmetry. The crystal structure of Mg9Sn5 comprises a framework of magnesium atoms with an arrangement similar to that found in Fe2P. The tin atoms are accommodated in tunnels running along the c-axis. Mg9Sn5 is at least very similar, perhaps even identical, with the ''dense form of Mg2Si'', Mg2Si-II, described by Cannon and Conlin (1964) and Dyuzheva et al. (1972, 1995).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | magnesium tin alloys; single crystals; structure refinement; high-pressure synthesis |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Klaus-Jürgen Range |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Jun 2023 09:27 |
| Last Modified: | 21 Jun 2023 09:27 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51376 |
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