2,3-Dimethoxy-10-oxostrychnidinium hydrogen oxalate dihydrate

Abstract

In the cation of the title salt, C23H27N 2O4+·C2HO4-·2H2O, both fused pyrrolidine rings exhibit twisted conformations, while the piperidine rings adopt screw-boat and boat conformations. In the crystal, the three components are linked via O - H⋯O and N - H⋯O interactions, forming a tape along the b axis. The tapes are further linked by weak C - H⋯O hydrogen bonds. forming a three-dimensional network.