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Silver trimagnesium phosphate bis-(hydrogenphosphate), AgMg(3)(PO(4))(HPO(4))(2), with an alluaudite-like structure.

ABSTRACT: The title compound, AgMg(3)(PO(4))(HPO(4))(2), which has been synthesized by the hydro-thermal method, has an alluaudite-like structure which is formed by edge-sharing MgO(6) octa-hedra (one of which has symmetry 2), resulting in chains linked together by phosphate groups and hydrogen bonds. The three-dimensional framework leads to two different channels along the c axis, one of which is occupied by Ag(+) ions with a square-planar coordination. The Ag(+) ions are disordered over two sites in a 0.89?(3):0.11?(3) ratio. The OH groups, which point into the other type of channel, are involved in strong O-H?O hydrogen bonds. The title compound is isotypic with the compounds AM(3)H(2)(XO(4))(HXO(4))(2) (A = Na or Ag, M = Mn, Co or Ni, and X = P or As) of the alluaudite structure type.

SUBMITTER: Assani A

PROVIDER: S-EPMC3050206 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature

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Silver trimagnesium phosphate bis-(hydrogenphosphate), AgMg(3)(PO(4))(HPO(4))(2), with an alluaudite-like structure.

Assani Abderrazzak A Saadi Mohamed M Zriouil Mohammed M El Ammari Lahcen L

Acta crystallographica. Section E, Structure reports online 20101224 Pt 1

The title compound, AgMg(3)(PO(4))(HPO(4))(2), which has been synthesized by the hydro-thermal method, has an alluaudite-like structure which is formed by edge-sharing MgO(6) octa-hedra (one of which has symmetry 2), resulting in chains linked together by phosphate groups and hydrogen bonds. The three-dimensional framework leads to two different channels along the c axis, one of which is occupied by Ag(+) ions with a square-planar coordination. The Ag(+) ions are disordered over two sites in a 0 ...[more]

PMID: 21522513

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