Co(II) coordination networks based on two rigiddicarboxylic acids: synthesis, structures, and applications: a literature over view (2005-2015)

Abstract

Co(II) coordination networks as an integral part of metal-organic materials have been in focus of materials scientists and crystal engineers for the last two decades. This interest stems not only from their reported fascinating architectures and remarkable adsorption properties being the inherent properties of the majority of the so far known metal-organic frameworks, but also from the unique place that Co(II) atom occupies among the transition metals due to its pronounced magnetic properties and colorimetric features. This review highlights the Co(II) mixed-ligand polymeric dicarboxylates built on two rigid dicarboxylic acids, the widely used 1,4-benzenedicarboxylic acid (H2bdc) and its closest analogue, 4,4'-biphenyldicarboxylic acid (H2bpdc) that have been reported in the past 10 years. It is focused on: (1) the nature and coordination abilities of Co(II); (2) the synthetic pathways; (3) the impact of size and rigidity of the spacer ligands in the generated coordination networks; (4) examples of one-, two- and three-dimensional coordination polymers; and (5) potential applications of Co(II) coordination polymers.