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Digitale Medien

Crystal structure of moganite-type phosphorus oxynitride: relationship to other twinned-quartz-based structures (1999)

Haines, J. ; Chateau, C. ; Léger, J. M. ; [weitere]

Copenhagen : International Union of Crystallography (IUCr)

Acta crystallographica 55 (1999), S. 677-682

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Details

ISSN: 1600-5740

Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik

Notizen: The structure of moganite-type phosphorus oxynitride quenched from high-pressure high-temperature conditions has been refined using neutron powder diffraction data. This moganite-type structure, space group I2/a, Z = 12, is slightly less distorted with respect to the Imab aristotype than is moganite (a monoclinic form of silica). A close topological relationship has been identified between the moganite-type and orthorhombic BeH2 structures indicating that SiO2, PON and BeH2 all adopt structures belonging to the twinned-quartz-based group. This group represents another possible structure type for systems composed of corner-sharing AX4 tetrahedra. Structures of this group are obvious candidates for intermediate phases between the cristobalite and quartz types.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1107/S010876819900347X

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