Abstract
Red crystals of Na4TiSe4 were obtained by reacting an intimate mixture of Na2Se, Ti and Se at 750?C. Na4TiSe4 is monoclinic, space group I2/a with a=24.027(6)Ä, b=7.346(4)Ä, c=21.572(6)Ä, beta=104.52(2)?, Z=16. Its crystal structure was determined from diffractometer data (AgKalpha-radiation) and refined to a conventional R of 0.036 for 2673 Fo's and 158 variables. The crystal structure is of a new type, characterized by the formation of discrete tetrahedral complex anions, [TiSe4]4-, which are arranged in slabs parallel to (100). The average Ti-Se bond length is 2.385(1)Ä. The Na(+) cations are in different chalcogen environments with distorted octahedral, square pyramidal and planer configurations, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 39-44 |
| Number of pages | 6 |
| Journal | Zeitschrift für Naturforschung B: A Journal of Chemical Sciences |
| Volume | 55 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Sept 1999 |
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
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