There is certainly also an N1—H1⋯O4 hydrogen bond between the indole nitro­gen and the opposite oxygen from the carboxyl­ate team on the symmetry-created fumarate dianion (Desk 2 Displacement ellipsoids are drawn for the fifty% probability level. Hydrogen atoms not linked to hydrogen bonding are omitted for clarity. Hydrogen bonds are https://5-meo-dalt-freebase62839.wikipresses.com/4252451/5_meo_dalt_freebase_fundamentals_explained