Over the past years we have designed in our group pyridine and pyridine N-oxide ligands decorated with phosphine oxide [1] (1), amide [2], phosphonic acid [3] and dithiophosphoryl moieties [4]. These multidentate molecules have been found to be strong and selective chelating ligands for trivalent lanthanide and actinide cations [5]. We have now extended this work to the synthesis of new phosphine oxide functionalized polynitrogen ligands exhibiting higher denticity potential, such as bipyridine derivatives 2 and 3. We also focused our attention on more preorganized structures such as phenanthroline 4 and acridines 5 and 6, that can increase the affinity for target cations by lowering the complexation energetic cost. The synthesized ligands and their coordination chemistry with lanthanide cations have been studied by X ray crystallography and computational molecular modeling. [1] S. Pailloux, C. Edicome Shirima, A. D. Ray, E. N. Duesler, R. T. Paine, J. R. Klaehn, M. E. McIllwain, B. P. Hay, Inorg. Chem., 2009, 48, 3104-3113 [2] S. Pailloux I. Binyamin, L. M. Deck, B. P. Hay, E. N. Duesler, L. N. Zakharov, W. Scott Kassel, A. L. Rheingold, R. T. Paine, Polyhedron, 2009, 28, 3979-3984 [3] X-M. Gan, I. Binyamin, S. Pailloux, E. N. Duesler, Dalton trans., 2006, 3912-3917 [4] X-M. Gan, E. N. Duesler, S. Parveen, R. T. Paine, Dalton trans., 2003, 4704-4708 [5] D. Rosario-Amorin, S. Ouizem, D. A. Dickie, Y. Wen, R.T. Paine, J. Gao, J. K. Grey, A. de Bettencourt-Dias, B. P, Hay, L. H. Delmau, Inorg. Chem., 2013,52, 3063-3083

Synthesis and f-element coordination of phosphine oxide decorated polypyridine ligand

249th National Meeting (2015)

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