Figure 4
The hydrogen bonding of a hydrofumarate ion in the structure of N-methyl-N-allyltryptammonium hydrofumarate, with hydrogen bonds shown as dashed lines. Displacement ellipsoids are drawn at the 50% probability level. Hydrogen atoms not involved in hydrogen bonding are omitted for clarity. Symmetry codes: (i) x − 1, y, z; (iv) 1 + x, y, z; (v) 1 − x, + y, − z; (vi) −x, + y, − z. |