Halogen Bonding in Crystal Engineering - Halogen Bonding: Fundamentals and Applications - page 123

Fig. 10 Honeycomb-like architectures formed on self-assembly of tridentate XB donors
with tridentate XB acceptors
T-shaped tridentate nodes, the diiodobenzenes as linear bidentate modules
that space the nodes and ribbons compounded of consecutive rectangles
are formed [155] (Fig. 11). A similar topology is present in the co-crystal
CBr 4 /Ph 4 P + Br - where bromide anions and carbon tetrabromide both work as
tridentate notes that alternate in the ribbon [121].
The overall crystal packing of both the 1D and the 2D networks described
above frequently present a layered structure wherein cationic layers alternate