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Redetermination of Na3TaF8

Vratislav Langer (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Lubomir Smrcok ; Miroslav Boca
Acta Crystallographica Section C: Crystal Structure Communications (0108-2701). Vol. C66 (2010), 9, p. i85-i86.
[Artikel, refereegranskad vetenskaplig]

The crystal structure of trisodium octafluoridotantalate, Na3TaF8, has been redetermined using diffractometer data collected at 153 K, resulting in more accurate bond distances and angles than obtained from a previous structure determination based on film data. The structure is built from layers running along [101], which are formed by distorted [TaF8] antiprisms and [NaF6] rectangular bipyramids sharing edges and corners. The individual layers are separated by eightcoordinated Na ions. Two atoms in the asymmetric unit are in special positions: the Ta atom is on a twofold axis in Wyckoff position 4e and one of the Na ions lies on an inversion centre in Wyckoff site 4d.

Nyckelord: Crystal structure, coordination, layered structure



Denna post skapades 2010-08-19.
CPL Pubid: 124878

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)

Ämnesområden

Koordinationskemi
Fasta tillståndets kemi

Chalmers infrastruktur