Pincer molecules are of increasing interest due to the modular nature of modification and range of reactivity observed when coordinated to a metal ion. A subset within the family of pincer molecules uses a pyridine group to bridge the outer two arms as well as provide a N-donor atom for metal binding. While the arm appendages have been studied extensively, little research has been conducted on the electronic effects of the central substituted pyridine systems. Therefore, a series of NNN pincer-type ligands with substitution on the 4-position of the pyridine ring with OH, OBn, H, Cl, and NO2 functional groups were synthesized and characterized through NMR spectroscopy and ESI-HRMS. Each pincer was metalated with Cu(II) salts and subsequently evaluated through X-ray diffraction analysis, cyclic voltammetry, and density functional theory analysis. The electronic and coordination chemistry of each complex will be discussed.

Electronic influence of substitution on the pyridine ring within NNN pincer-type molecules

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

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