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- W4213320281 abstract "Abstract The reactivity of ( Tr L)Co ( Tr L=5‐mesityl‐1,9‐(trityl)dipyrrin) toward various aryl azides was examined to elucidate the electronic structure and reactivity of dipyrrinato cobalt aryl nitrenoid complexes. Herein, we demonstrate the synthesis of a Co II diketimide complex [( Tr L)Co(NC 6 F 5 )] 2 and its reversible C−C bond cleavage to yield a monomeric Co nitrenoid complex ( Tr L)Co(NC 6 F 5 ). Exposure of [( Tr L)Co(NC 6 F 5 )] 2 to an excess amount of an H‐atom donor cleanly affords the Co II anilide complex ( Tr L)Co(NHC 6 F 5 ). The half‐order decay of [( Tr L)Co(NC 6 F 5 )] 2 via H‐atom abstraction (HAA) reveals saturation kinetic behavior indicating a pre‐equilibrium between [( Tr L)Co(NC 6 F 5 )] 2 and ( Tr L)Co(NC 6 F 5 ) prior to HAA. Furthermore, ( Tr L)Co(NC 6 F 5 ) undergoes reductive coupling with another equivalent of azide to furnish the four‐coordinate tetrazido complex ( Tr L)Co( κ 2 ‐N 4 (C 6 F 5 ) 2 ), expulsion of a fluorine atom to afford ( Tr L)CoF, and N‐group transfer reactivity to PPh 3 ." @default.
- W4213320281 created "2022-02-24" @default.
- W4213320281 creator A5022569799 @default.
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- W4213320281 date "2022-03-02" @default.
- W4213320281 modified "2023-10-16" @default.
- W4213320281 title "Reversible C−C Bond Cleavage of a Cobalt Diketimide into an Elusive Cobalt Aryl Nitrenoid Complex" @default.
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- W4213320281 doi "https://doi.org/10.1002/ange.202115437" @default.
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