A Crystalline Bismuth(II) Radical Anion: Synthesis, Characterization, and Reactivity

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This work demonstrates the synthesis of a bismuth radical anion using a unique pincer ligand, indicating potential for radical reactions.

The synthesis leads to an unprecedented bismuth(II) radical anion with significant radical reactivity.
Cyclic voltammetry shows a reversible reduction at E 1/2 = –1.85 V, confirming the stability of the radical anion.
Localized unpaired electron is confirmed through multi-frequency EPR and X-ray absorption spectroscopy.
Preliminary reactivity studies reveal the potential of the radical anion for single-electron transfer chemistry.

Pavlidis et al. (2025) studied this question.

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