Figure 2 A portion of the packing diagram for (I) showing graph-set motif R44(16) ring. For the sake clarity the atoms not involved in the motif shown have been omitted Symmetry codes: (i) x, -y + [{1\over 2}], z + [{1\over 2}]; (ii)-x,y + 1/2,-z + [{3\over 2}].  [article HTML]