Figure 7
The crystal structures of (a) α-P.Y. 191, (b) β-P.Y. 183 and (c) β-P.Y. 191. For (a), (b) and (c): view direction [100], b axes horizontal, c axes vertical. Colour codes: Ca atoms green, O red, S yellow, C dark grey, N blue, Cl light green balls, H grey sticks. All crystal structure drawings were made with Mercury 2.0 (Macrae et al., 2008). This figure is in colour in the electronic version of this paper. |