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Free, publicly-accessible full text available April 30, 2026
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An air-stable (amino)(amido)radical was synthesized by reacting a cyclic (alkyl)(amino)carbene with carbazoyl chloride, followed by one-electron reduction. We show that an adjacent radical center weakens the amide bond. It enables the amino group to act as a strong acceptor under steric contraint, thus enhancing the stabilizing capto-dative effect.more » « less
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The first examples of Co( ii ) mesoionic carbene complexes (CoX 2 Dipp MIC 2 ; X = Cl − , Br − , I − ) demonstrate a new electronic perturbation on tetrahedral Co( ii ) complexes. Using absorption spectroscopy and magnetometry, the consequences of the MIC's strong σ-donating/minimal π-accepting nature are analyzed and shown to be further tunable by the nature of the coordinated halide.more » « less