Synthesis, structure and Hirshfeld surface analysis of 2-oxo-2-chromen-6-yl 4--butyl-benzoate: work carried out as part of the AFRAMED project.

In the title compound, CHO, the dihedral angle between the 2-chromen-2-one ring system and the phenyl ring is 89.12 (5)°. In the crystal, the mol-ecules are connected through C-H⋯O hydrogen bonds to generate [010] double chains that are reinforced by weak aromatic π-π stacking inter-actions.

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.

Crystal structure of a silver-, cobalt- and iron-based phosphate with an alluaudite-like structure: AgCoFe(PO).

The new silver-, cobalt- and iron-based phosphate, silver cobalt iron tris(ortho-phosphate), AgCoFe(PO), was synthesized by solid-state reactions. Its structure is isotypic to that of NaCoFe(PO), and belongs to the alluaudite family, with a partial cationic disorder, the Ag atoms being located on an inversion centre and twofold rotation axis sites (Wyckoff positions 4 and 4), with partial occupancies of 0.885 (2) and 0.

Crystal structure of strontium dicobalt iron(III) tris-(orthophosphate): SrCo2Fe(PO4)3.

The title compound, SrCo2Fe(PO4)3, has been synthesized by a solid-state reaction. It crystallizes with the α-CrPO4 type structure. In this structure, all atoms are on special positions of the Imma space group, except for two O atoms which are located on general positions.

Crystal structure of disodium dicobalt(II) iron(III) tris-(orthophosphate) with an alluaudite-like structure.

The title compound, Na2Co2Fe(PO4)3, was synthesized by a solid-state reaction. This new stoichiometric phase crystallizes in an alluaudite-like structure. In this structure, all atoms are in general positions except for four atoms which are located at the special positions of the C2/c space group.