forthcoming articles

The previously unreported inter­metallic compound BaCu₅ crystallizes in the rare SrZn₅ structure type, completing a missing composition in the alkaline-earth copper family.

The title benzimidazolium chloride hydrate crystallizes in the ortho­rhom­bic space group Pnma. It was isolated as an unexpected product from a reaction mixture containing NbCl₅ and o-phenyl­enedi­amine.

The title compound is a second ortho­rhom­bic polymorph of Fe(C₅H₅)(C₈H₇O) and crystallizes in the same space group as the first polymorph.

Two crystallographically independent mol­ecules are present in the asymmetric unit of the title compound. C—H⋯O, N—H⋯O, C—H⋯π and π–π contacts connect mol­ecules in the crystal.

In the crystal, enanti­omeric mol­ecules are linked by C—H⋯O hydrogen bonds, forming layers parallel to the (101) plane. In addition, C—H⋯π inter­actions and Br⋯π contacts create layers parallel to the (101) plane.

The crystal structure of piperazine-1,4-diium bis­(2,5-di­bromo­benzoate) is reported, with detailed analysis of its intra- and inter­molecular hydrogen-bonding inter­actions, supra­molecular architecture, and Hirshfeld surface analysis.

In the title phosphate, all of the cations are located on tetra­hedral sites, and the three different tetra­hedra are linked by their vertices to form a double layer stacked along the c-axis direction. The plane formed by the rubidium atoms is sandwiched between the double layers.