(−)-(R)-N-[(3,4-Dihydro-2H-1-benzopyran-2-yl)methyl]-N'-(1,4,5,6-tetrahydro-2-pyrimidyl)-1,3-propanediaminium Dibromide

The crystal structure and absolute configuration of the (–)-enantiomer of the title compound, C₁₇H₂₈N₄O²⁺.2Br⁻, have been determined. The absolute configuration is R. The bridging chain between the ring moieties is folded with a -sc/ap/sc/sc/ap/-sc conformation. N—H...Br hydrogen bonds form endless chains in the b direction.

-1