at Google ScholarTitle data
Angelkort, Joachim ; Schönleber, Andreas ; van Smaalen, Sander:
Low- and high-temperature crystal structures of Ti।₃.
In: Journal of Solid State Chemistry.
Vol. 182
(2009)
Issue 3
.
- pp. 525-531.
ISSN 0022-4596
DOI: https://doi.org/10.1016/j.jssc.2008.11.028
Abstract in another language
Temperature-dependent, single-crystal X-ray diffraction of Ti।₃ has indicated that this compound undergoes a first-order phase transition at T c = 323 ± 2 K . Accurate structural parameters are reported for the high-temperature crystal structure at T = 326 K (hexagonal cell, a = 7.1416 (5)Å , c = 6.5102 (4)Å , Z = 2 , space group P6₃/mcm) and for the low-temperature structures at both 273 and 100 K (orthorhombic symmetry, space group Pmnm , Z = 4 , lattice parameters at 273 K: a = 12.3609 (7)Å, b = 7.1365 (5)Å , c = 6.5083 (4)Å and at 100 K: a = 12.2728 (7)Å , b = 7.0857 (5)Å , c = 6.4817 (4)Å ). Above T c , Ti।₃ possesses the Ti।₃ structure type containing chains of equidistant metal atoms. A twofold superstructure develops below T c , resulting in the RuBr₃ structure type that is characterized by a dimerization of the metal chains. The magnitude of the distortion is found to be the largest amongst the known transition metal trihalides. It thus provides an explanation for the inclination of Ti।₃ towards the RuBr₃ structure type, despite the fact that metal–metal bonds are weaker in iodides than in chlorides or bromides.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Keywords: | X-ray diffraction |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science > 530 Physics |
| Date Deposited: | 10 Aug 2015 10:53 |
| Last Modified: | 14 Jul 2022 11:32 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/17856 |