Figure 4
Supramolecular features of non-solvated dihydropyridines 1–6 showing linear and zigzag chain arrangements. Extension of the hydrogen-bond network of 1 and 3 in the crystallographic [101] direction, 4 in the [001] direction, 2 in the [010] direction, 5 in the [001] direction and 6 in the [010] direction. Hydrogen atoms not involved in hydrogen bonding are omitted for clarity. Grey: carbon, blue: nitrogen, red: oxygen and green: chlorine. |