The title compound, (C21H25N2)[ReO4], was formed as the
unexpected product in an attempted synthesis of a
rhenium(I)–N-heterocyclic carbene (NHC) complex. The
compound has crystallographic mirror symmetry with both
the cation and the tetrahedral anion located across a mirror
plane. The cation and anion are linked by a C—H O
hydrogen bond.
