title: Potassium trinickel(II) orthophosphate diphosphate, KNi3(PO4)P2O7.
abstract: The structure of the title compound is characterized by the presence of two different anions, (PO4)(3-) and (P2O7)(4-) with an eclipsed conformation. The crystal structure consists of edge-sharing [NiO6] octa-hedra forming an [Ni3O14] chain running parallel to [001]. Adjacent chains are connected through edges and apices to PO4 and P2O7 groups in such a way as to build a three-dimensional host lattice. The resulting framework presents inter-secting tunnels running along [010] and [101] in which the 11-coordinated potassium cation is located. The crystal structure of this new phosphate probably represents a new structural type.
authors: Laboratoire de Physico-Chimie des Matériaux Inorganiques, Faculté des Sciences Aïn Chock, Casablanca, Morocco.
authors: Meryem
authors: M
authors: Moutataouia
authors: Laboratoire de Physico-Chimie des Matériaux Inorganiques, Faculté des Sciences Aïn Chock, Casablanca, Morocco.
authors: Mohammed
authors: M
authors: Lamire
authors: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Batouta, BP 1014, Rabat, Morocco.
authors: Mohamed
authors: M
authors: Saadi
authors: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V-Agdal, Avenue Ibn Batouta, BP 1014, Rabat, Morocco.
authors: Lahcen
authors: L
authors: El Ammari