Enhanced Proton-Coupled Electron-Transfer Reactivity by a Mononuclear Nickel(II) Hydroxide Radical Complex
2024

Enhanced Reactivity of Nickel Hydroxide Complexes

publication Evidence: high

Author Information

Author(s): Ye Daniel, Wu Tong, Puri Ankita, Hebert David D., Siegler Maxime A., Hendrich Michael P., Swart Marcel, Garcia-Bosch Isaac

Primary Institution: Carnegie Mellon University

Hypothesis

The unique stereoelectronic structure of a NiOH complex enhances its proton-coupled electron transfer (PCET) reactivity.

Conclusion

The study found that the NiOH complex can reach three oxidation states and exhibits enhanced reactivity in PCET processes.

Supporting Evidence

  • The NiOH complex can be reversibly oxidized to different oxidation states.
  • Spectroscopic and computational methods confirmed the oxidation states of the NiOH species.
  • The complex showed enhanced reactivity in proton-coupled electron transfer reactions.
  • Thermochemical analysis indicated the ability of the complex to abstract H atoms from organic substrates.

Takeaway

Scientists created a special nickel compound that can easily transfer protons and electrons, which helps in chemical reactions.

Methodology

The synthesis and characterization of the NiOH complex were performed using single-crystal X-ray diffraction, cyclic voltammetry, and spectroscopic methods.

Digital Object Identifier (DOI)

10.1021/acs.inorgchem.4c03370

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