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Titles listC 3 symmetric tris(phosphonate)-1,3,5-triazine ligand: homopolymetallic complexes and its radical anion
Titles listC 3 symmetric tris(phosphonate)-1,3,5-triazine ligand: homopolymetallic complexes and its radical anion
Scientific Article
unige:14779 
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C 3 symmetric tris(phosphonate)-1,3,5-triazine ligand: homopolymetallic complexes and its radical anion |
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| Published in | New Journal of Chemistry. 2010, vol. 34, no. 10, p. 2319-2327 | |
| Abstract | The ligand 2,4,6-tris(dimethoxyphosphonate)-1,3,5-triazine L has been synthesized and its single crystal X-ray structure determined. The occurrence of P=O···Π intermolecular interactions, suggested by the short P=O··· triazine distances of 3.16–3.35 Å, is observed. The electrochemical reduction of the ligand shows its electron acceptor character by the formation of a stable radical anion. The hyperfine structure observed in the EPR spectra, combined with a theoretical DFT study, evidences the full delocalization of the unpaired electron mainly on the triazine core, with some participation of the phosphonate groups. Theoretical calculations are in agreement with the experimental values of the hyperfine coupling constants of 11.81 G for Aiso–31P and 1.85 G for Aiso–14N. Homopolymetallic complexes, formulated as {L[Cu(hfac)2]3} (1), 1∞{L2[Co(hfac)2]3} (2) and 1∞{L2[Mn(hfac)2]3} (3) (hfac = hexafluoroacetylacetonate), have been synthesized and structurally characterized. | |
| Identifiers | DOI: 10.1039/C0NJ00204F | |
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| Citation (ISO format) | MAXIM, Catalin et al. C 3 symmetric tris(phosphonate)-1,3,5-triazine ligand: homopolymetallic complexes and its radical anion. In: New Journal of Chemistry, 2010, vol. 34, n° 10, p. 2319-2327. doi: 10.1039/C0NJ00204F https://archive-ouverte.unige.ch/unige:14779 |
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