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Issue 4, 2013
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Conjugated metallorganic macrocycles: opportunities for coordination-driven planarization of bidentate, pyridine-based ligands

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Abstract

Two conjugated systems that can be constrained to planarity via metal coordination have been generated and their metal complexes studied. The potential for these architectures to be incorporated into metal-sensing arylene ethynylene/vinylene oligomers and polymers was probed by verifying that these ligands (1) bind strongly to Ag(I) and Pd(II) cations, and (2) that this event leads to complexes that are planar. Single crystal structures confirm that introduction of Ag(I) or Pd(II) cations enforces planarity in the newly formed macrocycles. Likewise, 1H-NMR titration studies reveal stoichiometric binding of Pd(II) and strong binding of Ag(I) (Ka (Ligand 1) = 1.3 × 102 M−1; Ka (Ligand 2) = 5.4 × 102 M−1) for each conjugated ligand.

Graphical abstract: Conjugated metallorganic macrocycles: opportunities for coordination-driven planarization of bidentate, pyridine-based ligands

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Publication details

The article was received on 21 Aug 2012, accepted on 16 Oct 2012 and first published on 17 Oct 2012


Article type: Paper
DOI: 10.1039/C2DT31914D
Citation: Dalton Trans., 2013,42, 948-958
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    Conjugated metallorganic macrocycles: opportunities for coordination-driven planarization of bidentate, pyridine-based ligands

    D. C. Hamm, L. A. Braun, A. N. Burazin, A. M. Gauthier, K. O. Ness, C. E. Biebel, J. S. Sauer, R. Tanke, B. C. Noll, E. Bosch and N. P. Bowling, Dalton Trans., 2013, 42, 948
    DOI: 10.1039/C2DT31914D

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