title: Rb(GaPO4)2(OH)(H2O).H2O: a hydrated rubidium gallium phosphate analogue of GaPO4.2H2O and leucophosphite.
abstract: Crystals of the title hydrated rubidium gallium phosphate, rubidium aqua-mu(3)-hydroxo-di-mu-phosphato-digallium hydrate, were synthesized hydrothermally at 453 K under autogenous pressure. The solid crystallizes in the monoclinic system and its structure was determined from single-crystal X-ray diffraction analysis. It is similar to dihydrated gallium phosphate, GaPO(4).2H(2)O, which is isostructural with the mineral leucophosphite. The structure is built up from a three-dimensional anionic framework composed of corner-linked octameric Ga(4)(PO(4))(4)(OH)(2)(H(2)O)(2) units. The Ga atom is in an octahedral coordination. Connection of the Ga(4)P(4) species generates eight-ring channels, in which are encapsulated the Rb(+) cations and water molecules.
authors.affiliation: Institut Lavoisier, IREM, UMR CNRS C 8637, Université de Versailles Saint-Quentin-en-Yvelines, 45 Avenue des Etats Unis, 78035 Versailles Cedex, France.
authors.forename: Lionel
authors.initials: L
authors.lastname: Beitone
authors.forename: Thierry
authors.initials: T
authors.lastname: Loiseau
authors.forename: Gerard
authors.initials: G
authors.lastname: Ferey