α-Ba(2)P(2)O(7)

Single crystals of α-Ba(2)P(2)O(7), dibarium diphosphate, were obtained by solid-state reaction. The ortho­rhom­bic structure is isotypic with α-Sr(2)P(2)O(7) and is the second polymorph obtained for this composition. The structure is built from two different BaO(9) polyhedra (both with m symmetry),...

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Detalles Bibliográficos
Autores principales: Zakaria, Driss, Erragh, Fatima, Oudahmane, Abdelghani, El-Ghozzi, Malika, Avignant, Daniel
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2010
Materias:
Inorganic Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3009187/
https://www.ncbi.nlm.nih.gov/pubmed/21588791
http://dx.doi.org/10.1107/S1600536810043539
Descripción
Sumario:Single crystals of α-Ba(2)P(2)O(7), dibarium diphosphate, were obtained by solid-state reaction. The ortho­rhom­bic structure is isotypic with α-Sr(2)P(2)O(7) and is the second polymorph obtained for this composition. The structure is built from two different BaO(9) polyhedra (both with m symmetry), with Ba—O distances in the ranges 2.7585 (10)–3.0850 (6) and 2.5794 (13)–2.9313 (4) Å. These polyhedra are further linked by sharing corners along [010] and either edges or triangular faces perpendicularly to [010] to form the three-dimensional framework. This polyhedral linkage delimits large channels parallel to [010] where the P(2)O(7) diphosphate anions are located. These groups (symmetry m) are characterized by a P—O—P angle of 131.52 (9)° and an eclipsed conformation. They are connected to the BaO(9) polyhedra through edges and corners.

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