Abstract
Na2HgS2 and K2HgS2 were obtained as colourless, tabular crystals by reacting the alkali sulfides Na2S and K2S with red HgS at 970K. Both compounds are orthorhombic: Na2HgS2, oP40, s.g. Pbca with a=18.24(2)Ä, b=7.494(5)Ä, c=7.237(5)Ä, Z=8; K2HgS2, oP20, s.g.. Pbcm, a=10.698(6)Ä, b=7.958(8)Ä, c=7.272(9)Ä, Z=4. Their crystal structures were determined from four circle diffractometer data and refined anisotropically to conventional R-factors of 0.056 (Na2HgS2) and 0.062 (K2HgS2) for 945 and 485 reflections with Fo(2)>3sigma(Fo(2)), resp. The crystal structures represent new structure types. They are closely related with each other and can be derived from hcp-arrays of the chalcogen-atoms. Characteristic feature ist the formation of discrete, almost linear [S-Hg-S](2-)-dithiomercurate anions with average HgS-bond lengths of 2.31Ä.
| Translated title of the contribution | Na2HgS2 and K2HgS2, Two Thiomercurates with Discrete Anions |
|---|---|
| Original language | German (Austria) |
| Number of pages | 6 |
| Journal | Zeitschrift für Naturforschung B: A Journal of Chemical Sciences |
| Publication status | Published - Sept 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
