Cobalt 5-bromoisophthalate coordination polymers containing bis(pyridyl)piperazine-type long spanning ligands and water molecule aggregations

► Cobalt coordination polymers with bis(pyridyl)piperazines and 5-bromoisophthalate (Brip). ► 1-D and 2-D inclined interpenetrated topologies. ► Different intriguing water molecule aggregations including novel water tapes or clusters.