CC BY 4.0 UnportedPeppel, TimSpannenberg, Anke2020-11-262020-11-262018https://doi.org/10.34657/4643https://oa.tib.eu/renate/handle/123456789/6014The title compound, (C9H14N4)[CoBr4], was obtained as single crystals directly in very low yield as a side product in the reaction of 1,1′-bis­(1-methyl­imidazolium)acetate bromide and CoBr2. The title compound consists of an imidazolium-based dication and a tetra­bromido­cobaltate(II) complex anion, which are connected via C—H...Br inter­actions in the crystal. The dihedral angle between the imidazolium rings in the cation is 72.89 (16)°. The CoII ion in the anion is coordinated tetra­hedrally by four bromide ligands [Co—Br = 2.4025 (5)–2.4091 (5) Å and Br—Co—Br = 106.224 (17)–113.893 (17)°]. The compound exhibits a high melting point (>300°C) and is a light-blue solid under ambient conditions.enghttps://creativecommons.org/licenses/by/4.0/540cobaltimidazoliumtetrahedralcrystal structureArticle