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

verfasst von

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.

Externe Organisation(en)

Universität Konstanz
Technische Universität Berlin
Christian-Albrechts-Universität zu Kiel (CAU)
Paul Scherrer Institut (PSI)

Typ

Artikel

Journal

Zeitschrift für Kristallographie (NCRS)

Band

209

Seiten

517-523

Anzahl der Seiten

7

ISSN

1433-7266

Publikationsdatum

1994

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemeine Materialwissenschaften, Physik der kondensierten Materie, Anorganische Chemie

Elektronische Version(en)

https://doi.org/10.1524/zkri.1994.209.6.517 (Zugang: Geschlossen)