Mononuclear and di-nuclear complexes from salen-based ligands continue to be of much interest to the field of coordination chemistry as their properties may render them useful for applications in the fields of catalysis, magnetism and gas sensing, among others. They are formidable building blocks for the synthesis of polynuclear and multidimensional systems as they allow the coordination of one or two bridging ligands in axial positions of their metal centers. Recently, we have synthesized 3d metal complexes from two families of salen-based ligands: (i) ((2,2 '- [(1-methyl-1,2-ethanediyl) bis(nitriloethylidyne)] bis(1-naphthalenol)) or (L1), anchoring one metal center, and (ii) 4,6-bis((E)-1-((2-hydroxy-3-methoxybenzylidene)amino)-2-methylpropyl)imino)ethyl)benzene-1,3-diol, or (L2), that can anchor two metal centers. In this talk, the structural characterization it will be discussed the structural, electrochemical and spectroscopic characterization and DFT calculations of Cu(II), Ni(II), Co(II) and Mn(II) complexes from L1 will be presented. Electrochemical and theoretical calculation studies of L1 mononuclear complexes reveal the non-innocent nature of this particular ligand. In the case of the ligand L2, the metal complex from Mn(II) exhibits two different geometries, contrary to its Ni(II), and Cu(II) analogues. In addition, new polynuclear complexes from these building blocks in reactions with K3[Fe(CN)6] will be presented, as well as a discussion on their electrochemical and theoretical calculations.

Mono and di-nuclear complexes from salen based-ligands as building blocks for new polynuclear complexes

256th National Meeting (2018)

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