Abstract
K2Sn2S5 and K2Sn2Se5 were prepared by reacting stoichiometric powdered mixtures of the binary compounds K2S or K2Se with Sn and the corresponding chalcogen at 1070 K, followed by slow cooling of the melt. The two compounds are isostructural and crystallize with the Tl2Sn2S5 structure type, s.g. C2/c, Z=4 with a=11.072(5)Ä, b=7.806(3)Ä, c=11.517(5)Ä, beta=108.43(2)? for K2Sn2S5 and a=11.613(5)Ä, b=8.189(3)Ä, c=11.897(6)Ä, beta=108.28(2) for K2Sn2Se5. The crystal structures were refined to conventional R-factors of 0.032 and 0.031, respectively. Sn-atoms are in a distorted trigonal-bipyramidal chalcogen coordination. The average equatorial bond lengths are Sn-S:2.427Ä and Sn-Se:2.552Ä, the axial ones are Sn-S:2.600Ä and Sn-Se:2.774Ä.
| Translated title of the contribution | Preparation and Crystal Structure of K2Sn2S5 and K2Sn2Se5 |
|---|---|
| Original language | German (Austria) |
| Number of pages | 4 |
| Journal | Zeitschrift für Naturforschung B: A Journal of Chemical Sciences |
| Publication status | Published - Aug 1991 |
Fields of science
- 103040 Photonics
- 104 Chemistry
- 104003 Inorganic chemistry
- 104008 Catalysis
- 104011 Materials chemistry
- 104015 Organic chemistry
- 104016 Photochemistry
- 104021 Structural chemistry
- 106 Biology
- 106002 Biochemistry
- 106032 Photobiology
- 107002 Bionics
- 209001 Biocatalysis
- 209004 Enzyme technology
- 210002 Nanobiotechnology
- 210005 Nanophotonics
- 211908 Energy research
- 211915 Solar technology
- 301114 Cell biology
- 301305 Medical chemistry
- 301904 Cancer research
