title: Bromidotetra-kis-(1H-2-ethyl-5-methyl-imidazole-κN)copper(II) bromide.
abstract: The Cu(II) ion in the title compound, [CuBr(C(6)H(10)N(2))(4)]Br, is coordinated in a square-based-pyramidal geometry by the N atoms of four imidazole ligands and a bromide anion in the apical site. Both the Cu(II) and Br(-) atoms lie on a crystallographic fourfold axis. In the crystal, the [CuBr(C(6)H(10)N(2))(4)](+) complex cations are linked to the uncoordinated Br(-) anions (site symmetry [Formula: see text]) by N-H⋯Br hydrogen bonds, generating a three-dimensional network. The ethyl group of the imidazole ligand was modelled as disordered over two orientations with occupancies of 0.620 (8) and 0.380 (8).
authors.affiliation: Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 G. Narutowicz St., 80233 PL Gdańsk,  Poland.
authors.forename: Sylwia
authors.initials: S
authors.lastname: Godlewska
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Baranowska
authors.forename: Joanna
authors.initials: J
authors.lastname: Socha
authors.forename: Anna
authors.initials: A
authors.lastname: Dołęga