title: Crystal structure of dimanganese(II) zinc bis-[ortho-phosphate(V)] monohydrate.
abstract: The title compound, Mn2Zn(PO4)2·H2O, was obtained under hydro-thermal conditions. The structure is isotypic with other transition metal phosphates of the type M 3- xM' x (PO4)2·H2O, but shows no statistical disorder of the three metallic sites. The principal building units are distorted [MnO6] and [MnO5(H2O)] octa-hedra, a distorted [ZnO5] square pyramid and two regular PO4 tetra-hedra. The connection of the polyhedra leads to a framework structure. Two types of layers parallel to (-101) can be distinguished in this framework. One layer contains [Zn2O8] dimers linked to PO4 tetra-hedra via common edges. The other layer is more corrugated and contains [Mn2O8(H2O)2] dimers and [MnO6] octa-hedra linked together by common edges. The PO4 tetra-hedra link the two types of layers into a framework structure with channels parallel to [101]. The H atoms of the water mol-ecules point into the channels and form O-H⋯O hydrogen bonds (one of which is bifurcated) with framework O atoms across the channels.
authors: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors: Ghaleb
authors: G
authors: Alhakmi
authors: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors: Abderrazzak
authors: A
authors: Assani
authors: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors: Mohamed
authors: M
authors: Saadi
authors: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP 1014, Rabat, Morocco.
authors: Lahcen
authors: L
authors: El Ammari
keywords: Fe3(PO4)2·H2O structure type; crystal structure; hydro­thermal synthesis; transition metal phosphates