Figure 3
The hydrogen bonding of a hydrofumarate ion in the structure of N-ethyl-N-propyltryptammonium hydrofumarate, with hydrogen bonds shown as dashed lines. Only one component of the disorder is shown, and hydrogen atoms not involved in hydrogen bonding are omitted for clarity. Symmetry codes: (i) 1 + x, y, z; (iv) −1 + x, y, z; (v) 2 − x, − + y, 1 − z. |