6,7-Dihydro-5H-pyrrolo[1,2-a]imidazole

Abstract

The crystal structure of 6,7-dihydro-5H-pyrrolo[1,2-a]imidazole, C6H8N2, at 100 K has monoclinic (P21/n) symmetry. The molecule adopts an envelope conformation of the pyrrolidine ring, which might help for the relief torsion tension. The crystal cohesion is achieved by C—H...N hydrogen bonds. Interestingly, this fused ring system provides protection of the α-C atom (attached to the non-bridging N atom of the imidazole ring), which provides stability that is of interest with respect to electrochemical properties as electrolytes for fuel cells and batteries, and electrodeposition.