| ¹H NMR (500 MHz, CD₃CN, 25 °C) | Image data were not transcribed |
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Sanju Luhach, Tim K. Schramm, Jan Kachnowicz, Andreas Hansen, Demyan E. Prokopchuk. “Rapid and selective metal-free O₂ reduction to H₂O₂ using a molecular CpN₃ electrocatalyst.” ChemRxiv (). https://doi.org/10.26434/chemrxiv-2025-wz7zf/v3
| ¹H NMR (500 MHz, CD₃CN, 25 °C) | 95 % H/D exchange; signals at 0.8 and 1.3 ppm are residual pentane; image data were not transcribed |
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| ¹H NMR (500 MHz, CD₃CN, 25 °C) | Signals at 0.8 and 1.3 ppm are residual pentane; image data were not transcribed |
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| Cyclic voltammetry (0.20 mM, MeCN, 0.1 V s⁻¹, 0.10 M [nBu₄N][B(C₆F₅)₄], N₂ or 1 atm air) | E₁/₂ = −0.72 V vs. Fc⁺/⁰; the voltammogram becomes irreversible when the solution is saturated with air; image data were not transcribed |
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| Cyclic voltammetry (1.0 mM, MeCN, 0.10 M [nBu₄N][B(C₆F₅)₄], 1 atm N₂, variable scan rates) | Image data were not transcribed |
| UV–vis (0.20 mM in 5 mL MeCN, 3 mL DI water layer after 10 mL DCM:5 mL DI water work-up, with and without Ti(O)SO₄) | No significant increase after Ti(O)SO₄ addition; [CpN₃H]²⁺ does not contribute to the increased absorbance attributed to the Ti(O₂H₂) complex; image data were not transcribed |
| UV–vis (MeCN, varying concentrations) | Absorbance at 411 and 270 nm; image data were not transcribed |
| Cyclic voltammetry (1.0 mM, MeCN, 0.10 M [nBu₄N][B(C₆F₅)₄], 1 atm N₂, variable scan rates) | Two quasi-reversible redox waves centered at ca. −1.5 and −1.7 V, coupled to a new oxidation peak at ca. −1.0 V of unknown origin; the redox waves become more reversible as the scan rate is increased and are assigned to the [CpN₃]⁺/CpN₃ and CpN₃/[CpN₃]⁻ redox couples; image data were not transcribed |
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