A three-component modular strategy to extend and link coordination complexes by using halogen bonds to O, S and π acceptors

(Figure Presented) Strategic extension! A modular strategy, involving the recognition and assembly of three molecular components, was used to decorate complexes of Ni^II and Co^II with halogen bonds of I⋯S and I⋯O type. In addition to this rational implementation of halogen bonding to extend coordination structures, the resulting materials also demonstrate the self-assembly through I⋯ π interactions as a means to form polymers based on coordination and halogen bonds (see graphic).