A cubic calcium oxynitrido-silicate, Ca(2.89)Si(2)N(1.76)O(4.24)
2011 (English)In: Acta Crystallographica Section E: Structure Reports Online, ISSN 1600-5368, E-ISSN 1600-5368, Vol. 67, no 11, i66-+ p.Article in journal (Refereed) Published
The title compound, tricalcium oxynitride silicate, with composition Ca(3-x)Si(2)N(2-2x)O(4+2x) (x similar or equal to 0.12), is a perovskite-related calcium oxynitrido silicate containing isolated oxynitrido silicate 12-rings. The N atoms are statistically disordered with O atoms (occupancy ratio N:O = 0.88:0.12) and occupy the bridging positions in the 12 ring oxynitrido silicate anion, while the remaining O atoms are located at the terminal positions of the Si(O,N)(4) tetrahedra. The majority of the Ca(2+) cations fill the channels along  in the packing of the 12-ring anions. The rest of these cations are located at several positions, with partial occupancy, in channels along the body diagonals.
Place, publisher, year, edition, pages
2011. Vol. 67, no 11, i66-+ p.
IdentifiersURN: urn:nbn:se:su:diva-70664DOI: 10.1107/S1600536811042607ISI: 000297858400006OAI: oai:DiVA.org:su-70664DiVA: diva2:482652
authorCount :5 2012-01-242012-01-232012-01-24Bibliographically approved