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Wyllieite-type Ag(1.09)Mn(3.46)(AsO(4))(3).

ABSTRACT: Single crystals of wyllieite-type silver(I) manganese(II) tris-orthoarsenate(V), Ag(1.09)Mn(3.46)(AsO(4))(3), were grown by a solid-state reaction. The three-dimensional framework is made up from four Mn(2+)/Mn(3+) cations surrounded octa-hedrally by O atoms. The MnO(6) octa-hedra are linked through edge- and corner-sharing. Three independent AsO(4) tetra-hedra are linked to the framework through common corners, delimiting channels along [100] in which two partly occupied Ag(+) sites reside, one on an inversion centre and with an occupancy of 0.631?(4), the other on a general site and with an occupancy of 0.774?(3), both within distorted tetra-hedral environments. One of the Mn sites is also located on an inversion centre and is partly occupied, with an occupancy of 0.916?(5). Related compounds with alluaudite-type or rosemaryite-type structures are compared and discussed.

SUBMITTER: Frigui W

PROVIDER: S-EPMC3379051 | biostudies-literature | 2012 Jun

REPOSITORIES: biostudies-literature

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Wyllieite-type Ag(1.09)Mn(3.46)(AsO(4))(3).

Frigui Wafa W Zid Mohamed Faouzi MF Driss Ahmed A

Acta crystallographica. Section E, Structure reports online 20120502 Pt 6

Single crystals of wyllieite-type silver(I) manganese(II) tris-orthoarsenate(V), Ag(1.09)Mn(3.46)(AsO(4))(3), were grown by a solid-state reaction. The three-dimensional framework is made up from four Mn(2+)/Mn(3+) cations surrounded octa-hedrally by O atoms. The MnO(6) octa-hedra are linked through edge- and corner-sharing. Three independent AsO(4) tetra-hedra are linked to the framework through common corners, delimiting channels along [100] in which two partly occupied Ag(+) sites reside, one ...[more]

PMID: 22719272

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