Crystal structure of barium dinickel(II) iron(III) tris-[orthophosphate(V)], BaNiFe(PO).

The orthophosphate BaNiFe(PO) has been synthesized by a solid-state reaction route and characterized by single-crystal X-ray diffraction and energy-dispersive X-ray spectroscopy. The crystal structure comprises (100) sheets made up of [NiO] dimers that are linked to two PO tetra-hedra common edges and vertices and of linear infinite [010] chains of corner-sharing [FeO] octa-hedra and [PO] tetra-hedra. The linkage of the sheets and chains into a framework is accomplished through common vertices of PO tetra-hedra and [FeO] octa-hedra.

Crystal growth, structure elucidation and CHARDI/BVS investigations of β-KCoFe(PO).

Single crystals of β-KCoFe(PO), potassium cobalt(II) iron(III) bis-(ortho-phosphate), were grown from the melt under atmospheric conditions. This phosphate crystallizes isotypically with KZnFe(PO) in space group 2/, adopting a zeolite- type of structure. The structure of the present phosphate is distinguished by an occupational disorder of the two transition-metal sites with ratios Fe:Co of 0.

Synthesis and crystal structure of NaCuIn(PO).

Single crystals of sodium copper(II) indium bis-[phosphate(V)], NaCuIn(PO), were grown from the melt under atmospheric conditions. The title phosphate crystallizes in the space group 2/ and is isotypic with KCuFe(PO). In the crystal, two [CuO] trigonal bipyramids share an edge to form a dimer [CuO] that is connected to two PO tetra-hedra.

Crystal structure of silver strontium copper orthophosphate, AgSrCu(PO).

Crystals of the new compound, AgSrCu(PO), were grown successfully by the hydro-thermal process. The asymmetric unit of the crystal structure of the title compound contains 40 independent atoms (4 Sr, 4.5 Cu, 1 Ag, 6 P and 24 O), which are all in general positions except for one Cu atom, which is located on an inversion centre.

Crystal structure of a new tripotassium hexa-nickel iron hexa-phosphate.

A new potassium-nickel iron phosphate, KNiFe(PO), has been synthesized by solid-state reaction and structurally characterized by single-crystal X-ray diffraction and qualitative energy dispersive X-ray spectroscopy (EDS) analysis. The structure is built up by [FeO], [PO], and [NiO] coordination polyhedra, which are linked to each other by edge and corner sharing to form zigzag layers parallel to the plane. These layers are inter-connected by [PO] tetra-hedra and [NiO] octa-hedra common corners, leading to a three-dimensional framework delimiting large channels running along the [100] direction in which the K cations are localized.

Crystal structure of calcium dinickel(II) iron(III) tris-(orthophosphate): CaNiFe(PO).

The title compound, CaNiFe(PO), was synthesized by solid-state reactions. Its structure is closely related to that of α-CrPO in the space group . Except for two O atoms in general positions, all atoms are located in special positions.

Crystal structure of strontium dinickel iron orthophosphate.

The title compound, SrNi2Fe(PO4)3, synthesized by solid-state reaction, crystallizes in an ordered variant of the α-CrPO4 structure. In the asymmetric unit, two O atoms are in general positions, whereas all others atoms are in special positions of the space group Imma: the Sr cation and one P atom occupy the Wyckoff position 4e (mm2), Fe is on 4b (2/m), Ni and the other P atom are on 8g (2), one O atom is on 8h (m) and the other on 8i (m). The three-dimensional framework of the crystal structure is built up by [PO4] tetra-hedra, [FeO6] octa-hedra and [Ni2O10] dimers of edge-sharing octa-hedra, linked through common corners or edges.