Kabbour, H., Cario, L., Danot, M. & Meerschaut, A. (2006) Design of a new family of inorganic compounds Ae(2)F(2)SnX(3) (Ae = Sr, Ba; x = S, Se) using rock salt and fluorite 2D building blocks. Inorg. Chem. 45 917–922.
Added by: Florent Boucher (2016-05-12 13:21:38)
|Type de référence: Article
Numéro d'identification (ISBN etc.): 0020-1669
Clé BibTeX: Kabbour2006a
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Créateurs: Cario, Danot, Kabbour, Meerschaut
Collection: Inorg. Chem.
Consultations : 3/366
Indice de consultation : 2%
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We could predict the structure of a new family of compounds Ae(2)F(2)SnX(3) (Ae = Sr, Ba; X = S, Se) from the stacking of known 2D building blocks of the rock salt and fluorite types. With a high-temperature ceramic method we have then succeeded to synthesize the four compounds Ba2F2SnS3, Ba2F2SnSe3, Sr2F2SnS3, and Sr2F2SnSe3. The structure refinements from X-ray powder diffraction patterns have confirmed the structure predictions and showed their good accuracy. The structure of the four compounds results from the alternated stacking of fluorite [Ae(2)F(2)] (Ae = Sr, Ba) and distorted rock salt [SnX3] (X = S, Se) 2D building blocks. As shown by band structure calculations, these blocks behave as a charge reservoir and a charge acceptor, respectively, Sr2F2SnS3 and Ba2F2SnS3 are transparent with optical gaps of 3.06 and 3.21 eV, respectively. However, an attempt to obtain a transparent conductor by substituting Ba per La in Ba2F2SnS3 was unsuccessful.
Added by: Florent Boucher