Acta Cryst. (2005). E61, o1598-o1600  [ doi:10.1107/S1600536805013292 ]

Pargyline hydrochloride, a monoamine oxidase inhibitor: an orthorhombic form

A. Hempel, N. Camerman, A. Camerman and D. Mastropaolo

Abstract: In the crystal structure of the title compound, N-benzyl-N-methylprop-2-yn-1-aminium chloride, C₁₁H₁₄N⁺·Cl^-, the asymmetric unit contains two independent enantiomeric cations with a pseudo-inversion center between them. In both molecules, the protonation occurs at the N atom, and the side chains are extended in a direction roughly perpendicular to the benzene rings. The molecules are arranged head-to-head and tail-to-tail, producing hydrophilic and hydrophobic regions. In addition to the ordinary N-HCl hydrogen bonds, numerous weak non-standard hydrogen bonds of the type C-HCl also contribute to the crystal packing.

Online 7 May 2005

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