Figure 1
The molecular structures of (I)–(XII) showing the atom-labelling schemes: (a) (I); (b) (II); (c) (III); (d) (IV); (e) (V); (f) (VI); (g) (VII); (h) (VIII); (i) (IX); (j) (X); (k) (XI); (l) (XII). Displacement ellipsoids are drawn throughout at the 30% probability level. |