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Synthesis and complexation properties of novel triazoyl-based ferrocenyl ligands |
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| Authors: | Gilles Gasser Jonathan D. Carr Stephen J. Green Sean M. Cafferkey James H.R. Tucker |
| Affiliation: | a Institute of Chemistry, University of Neuchâtel, Av. de Bellevaux 51, CH-2009 Neuchâtel, Switzerland b School of Chemistry, University of Exeter, Stocker Road, Exeter EX4 4QD, UK c School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK d School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK |
| Abstract: | Two new ligand derivatives of ferrocene, namely N-4-[3,5-di-(2-pyridyl)-1,2,4-triazoyl]ferrocene carbimine (L1) and N-4-[3,5-di-(2-pyridyl)-1,2,4-triazoyl]ferrocene carbamide (L2), were synthesised in good yields by reacting the known compound 3,5-di-pyridine-2-yl-[1,2,4]triazol-4-ylamine (1) with ferrocenecarbaldehyde and chlorocarbonyl ferrocene, respectively. The structures of L1 and L2 were determined by X-ray crystallography. The complexation of L1 and L2 with CuI, AgI, ZnII and CdII was studied by NMR and UV-vis spectroscopies, as well as by electrochemistry, with titrations used to determine metal:ligand stoichiometries. The cyclic voltammograms of L1 and L2 and their respective complexes indicated reversible one-electron transfers corresponding to the Fc0/+ redox couple (Fc = ferrocene), with formal electrode potentials shifting to more positive values upon metal complexation. |
| Keywords: | Self-assembly Supramolecular chemistry [2 × 2] Grids Ferrocene N ligands |
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