A Large Family of Halogen-Bonded Cocrystals Involving Metal–Organic Building Blocks with Open Coordination Sites

Abstract

We demonstrate a design for halogen-bonded metal–organic cocrystals involving coordinatively unsaturated square-planar Cu(II) and Ni(II) centers, by utilizing a Schiff base ligand whose pendant acetyl group enables halogen bonding. The robustness of this design is evident by the assembly of a large family of eight cocrystals based on zero-, one-, and two-dimensional halogen bonded architectures involving mono- or ditopic halogen bond donors based on iodine or bromine.