Figure 6
Part of the crystal packing for (I), showing the involvement of the chloride ions in N—H⋯Cl and O—H⋯Cl hydrogen bonds with the tapentadol molecules, resulting in a one-dimensional helical chain along the a axis. Hydrogen bonds are shown as dashed lines and H atoms not involved in hydrogen bonding have been omitted for clarity. Only atoms involved in hydrogen bonding have been labelled. [Symmetry code: (i) x − 1, y, z.] |