CRYSTAL-STRUCTURE OF TL2TE3O7

Citation
B. Jeansannetas et al., CRYSTAL-STRUCTURE OF TL2TE3O7, Materials research bulletin, 32(1), 1997, pp. 51-58
Citations number
13
Categorie Soggetti
Material Science
Journal title
ISSN journal
00255408
Volume
32
Issue
1
Year of publication
1997
Pages
51 - 58
Database
ISI
SICI code
0025-5408(1997)32:1<51:COT>2.0.ZU;2-G
Abstract
Tl2Te3O7 crystallizes with the triclinic symmetry (space group P-1) an d the unit cell parameters a = 6.839(1) Angstrom, b = 7.432(1) Angstro m, c = 9.920(2) Angstrom, alpha = 92.00(3)degrees, beta = 108.95(3)deg rees, gamma = 112.85(3)degrees, Z = 2. Its crystal structure has been solved from single crystal data to a final R1 = 0.0299. It can be desc ribed as a three-dimensional network of MO(4)E (M = Tl, Te) trigonal b ipyramids and TeO(3)E tetrahedra sharing either corners or edges. This network contains diamond-shaped tunnels roughly parallel to the [1 1 1] direction and towards the center, of which are directed the stereoc hemically active lone pairs E.