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Refinement of the Crystal Structure of Synthetic Tl3AsS4

Peter Engel ; Laboratorium fur Kristalographie, Freiestrasse 3 and Mineralogisch-Petrographisches Institut, Baitzer-Strasse 1, Universitat Bern, CH-3012 Bern,_ Schweiz
Werner Nowacki ; Laboratorium fur Kristalographie, Freiestrasse 3 and Mineralogisch-Petrographisches Institut, Baitzer-Strasse 1, Universitat Bern, CH-3012 Bern,_ Schweiz

Sažetak

The crystal structure of a synthetic sulfosalt, TlsAsS4, has been
refined. The crystal is orthorhombic with space group Pnma ..
Four formula units are contained in a unit cell of dimensions
a = 0.8893(3), b = 1.0868(5) and c = 0.9088(3) nm. The final R-value
is 0.04 for 759 observed reflections.
The Tl(l) has seven nearest S atoms with a mean Tl-S bond
length of 0.329 nm. Tl(2) has five nearest S atoms with a mean
Tl-S bond length of 0.318 nm. The Tl coordination polyhedra form
a three-dimensional framework. The As atom has a tetrahedral
coordination by four S atoms at a mean distance of 0.216 nm. The
AsS4 tetrahedra are isolated.

Ključne riječi

Hrčak ID:

194120

URI

https://hrcak.srce.hr/194120

Datum izdavanja:

20.10.1984.

Posjeta: 756 *