K. Hensen et al., N-TRIMETHYLSILYLIMIDAZOLE HYDROBROMIDE AT 133 K, Acta crystallographica. Section C, Crystal structure communications, 54, 1998, pp. 1312-1314
The title compound [1-(trimethylsilyl)imidazolium bromide, C6H13N2Si+.
Br-] exhibits a 'tetracoordinated' Si centre with bond angles deviatin
g from ideal tetrahedral geometry. The Si-N bond is the longest among
those found in Me3Si-N-imidazole fragments in the literature. The prot
onated N atom forms a hydrogen bond to the Br- ion, and one further co
ntact less than 3 Angstrom from the Br- ion to an aromatic H atom can
be found.