3,3′-Dimethyl-1,1′-methyl­enediimidazolium tetra­bromido­cobaltate(II)

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Date
2018
Volume
Issue
3
Journal Title
Title
Series Titel
Publisher
Chester : IUCr
Abstract

The 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.

Description
Keywords
cobalt, imidazolium, tetrahedral, crystal structure
Citation
Peppel, T., & Spannenberg, A. (2018). 3,3′-Dimethyl-1,1′-methyl­enediimidazolium tetra­bromido­cobaltate(II). (3). https://doi.org//10.1107/S2414314618012129
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License
CC BY 4.0 Unported