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The versatile coordination chemistry of 1,3-benzenedicarboxylate in the last 20 years: An investigation from the coordination modes to spectroscopic insights
1,3-bdc acts as a terminal ligand or as a bridge connecting from two to six metal centers. This building block can connect metal ions through nineteen distinct coordination modes, resulting in a richness of geometries/topologies of its coordination networks. The coordination modes of 1,3-bdc can be reasonably controlled by some factors.
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•Diverse factors influence the coordination mode and the final architecture of 1,3-bdc-coordination networks.•Some aspects can assist in a more rational design of coordination networks based on 1,3-bdc.•Structural-spectroscopic aspects of 1,3-bdc are useful for characterizing amorphous multifunctional materials.
Aromatic carboxylates have been vastly applied as building blocks for the assembly of robust molecular-based materials owing to their potential application in various fields. In this family, 1,3-benzenedicarboxylate (1,3-bdc), which possesses a “V”-type configuration, has been distinguished. Over the past 20 years, the number of compounds based on 1,3-bdc rapidly expanded due to its multifaceted coordination chemistry and the possibility to generate materials with diversified applications. Therefore, the main purpose of this study is to explore the structural aspects, diversity, and the factors that influence coordination modes of 1,3-bdc by comparison of a series of structurally related compounds. In this sense, we highlight some aspects that can assist in a more rational design of coordination networks based on 1,3-bdc. We also discuss the structural-spectroscopic correlation of the metal-carboxylate bonds aimed at providing support for further investigation on multifunctional materials based on 1,3-bdc, including the amorphous solids. As a direct application of this knowledge, we produced two new CuII-based compounds by the combination of 1,3-bdc and 1,10-phenanthroline (phen). We obtained a discrete complex formed by two cocrystallized mononuclear complexes, {[Cu(1,3-Hbdc)(phen)(H2O)2]ClO4·[Cu(1,3-bdc)(phen)(H2O)2]·2(H2O)} (1), and a coordination polymer, {[Cu(1,3-bdc)(phen)(H2O)]·DMF}n (2), and we provided a further investigation of the nature and features of these compounds based on the discussion raised in this systematic study.