[1-(1-Adamantylamino)ethylidene]oxonium methanesulfonate

Abstract

In the title salt, C12H20NO+·CH3SO3 −, the [1-(1-adamantyl­amino)ethyl­idene]oxonium cations and methane­sulfonate anions are linked into chains along the a axis via O—H⋯O and N—H⋯O hydrogen bonds. All non-H atoms of the acetamido group are essentially planar, with a maximum deviation of 0.0085 (12) Å. In comparison with related structures, the carbonyl C=O bond is slightly elongated [1.249 (2) Å], whereas the amide C—N bond is shortened [1.292 (2) Å].