Protonated paramagnetic redox forms of di-o-quinone bridged with p-phenylene-extended TTF: A EPR spectroscopy study

• Nikolay O. Chalkov,
• Vladimir K. Cherkasov,
• Gleb A. Abakumov,
• Andrey G. Starikov and
• Viacheslav A. Kuropatov

Beilstein J. Org. Chem. 2016, 12, 2450–2456, doi:10.3762/bjoc.12.238

• reaction exists in solution as a solvent-separated ion pair with a copper cation. A character of spin-density distribution in a radical anion species leads to the conclusion that the ligand corresponds to type III of the Robin–Day classification. Keywords: acceptor–donor–acceptor triad; bridging ligand

• acceptor–donor–acceptor triad 1. The EPR spectrum of (1·)H in CHCl3, 293 K: a) experimental and b) experimental + D2O. The EPR spectrum of (1·)H3 in CHCl3, 293 K: a) experimental, b) simulated, c) experimental + D2O and d) simulated + D2O. The EPR spectrum of (1·−)H2 THF, 293 K: a) experimental and b