Figure 3
(a) The molecular packing and unit cell of (I), viewed along the a axis. Hydrogen bonds are indicated by dashed lines and H atoms not involved in such interactions have been omitted for clarity. Half the molecules are shown in a space-filling representation. The shading is similar to that in Fig. 1. (b) The crystal structure of Gly-L-Leu (Pattabhi et al., 1974), viewed along the b axis. (c) The crystal structure of L-Ala-L-Leu (Görbitz, 1999), viewed along the c axis. |