High-pressure study on dioxolane silica sodalite (C₃H₆O₂)₂[Si₁₂O₂₄] - neutron and X-ray powder diffraction experiments

authored by

K. Knorr, C. M. Braunbarth, G. Van De Goor, Peter Behrens, C. Griewatsch, W. Depmeier

Abstract

Neutron and X-ray high-pressure powder-diffraction experiments on silica sodalite with 1,3-dioxolane as a template molecule, (C₃H₆O₂)₂[Si₁₂O₂₄], were performed up to a maximum pressure of 2.7 GPa. A phase transition from the fully expanded structure at ambient pressure, space group Im3̄m, to the acentric space group I4̄3m was derived from the observed compression behaviour. A ferro-elastic phase transition appears at about 1.2 GPa to the rhombohedral crystal system. From symmetry analysis and the observed transition behaviour the space groups R3 or R3m are proposed for p>1.2 GPa.

Organisation(s)

Institute of Inorganic Chemistry

External Organisation(s)

Helmholtz-Zentrum Berlin für Materialien und Energie (HZB)
University of Konstanz
Kiel University

Type

Article

Journal

Solid state communications

Volume

113

Pages

503-507

No. of pages

5

ISSN

0038-1098

Publication date

27.01.2000

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Chemistry, Condensed Matter Physics, Materials Chemistry

Electronic version(s)

https://doi.org/10.1016/S0038-1098(99)00516-5 (Access: Unknown)