Bis(6-methoxy-1-methyl-2,3,4,9-tetrahydro-1H-β-carbolin-2-ium) tetrachloridozincate(II) dihydrate

Abstract

The asymmetric unit of the title compound, (C13H17N2O)2[ZnCl4]·2H2O, contains two tetrahydroharmine cations, one tetrachlorozincate(II) anion and two water molecules. In the cations, the two 1H-indole ring systems are essentially planar, with maximum deviations of 0.016 (2) and 0.018 (2) Å, and both tetrahydropyridinium rings show a half-chair conformation. The ZnII complex anion has a distorted tetrahedral geometry. In the crystal, intermolecular N—H...O, N—H...Cl, O—H...O, O—H...Cl and C—H...O hydrogen bonds link the components into a three-dimensional network. A π–π interaction with a centroid–centroid distance of 3.542 (14) Å is also observed.