Figure 2
Illustrations of the crystal packing in polymorphs (Ia), (Ic) and (Id), showing selected molecules in the unit cells for clarity. (a) In polymorph (Ia), the molecules are viewed down the a axis. (b) In polymorph (Ic), the view is down the c axis, showing how the pairs of Sb complexes pack in two different styles. (c) In polymorph (Id), the respective columns of Sb1 and Sb2 are shown packing along the b axis. |