Compression mechanism in trioxane silica sodalite, [Si12O24] • 2 C3H603

authored by

K. Futterer, W. Depmeier, F. Altorfer, P. Behrens, J. Felsche

Abstract

Cubic silica sodalite with 1, 3, 5-trioxane template, [Si12O24]. 2 C3H603, a0 = 8.8349(1) A, space group 743m, Z = 1, was studied at room temperature and at elevated pressures up to 1.28 GPa with neutron powder diffraction. No deviations from cubic symmetry could be observed with increasing pressure. The linear bulk modulus of the compound was determined to be 132(7) GPa. Rietveld profile refinements revealed that the volume reduction under pressure is correlated with an increase of the cooperative tilting of the relatively rigid framework SiO4-tetrahedra. This suggests that the tilting is the principal component of the compression mechanism.

External Organisation(s)

University of Konstanz
Technische Universität Berlin
Kiel University
Paul Scherrer Institut (PSI)

Type

Article

Journal

Zeitschrift für Kristallographie (NCRS)

Volume

209

Pages

517-523

No. of pages

7

ISSN

1433-7266

Publication date

1994

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Materials Science, Condensed Matter Physics, Inorganic Chemistry

Electronic version(s)

https://doi.org/10.1524/zkri.1994.209.6.517 (Access: Closed)