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- W2915691450 abstract "Cationic cobalt(I) dinitrogen complexes with a strong-field tridentate pincer ligand were prepared and the oxidative addition of polar and non-polar bonds was studied. Addition of H2 to [(iPrPNP)Co(N2)]+ (iPrPNP = 2,6-bis((diisopropylphosphaneyl)methyl)pyridine) in THF-d8 resulted in rapid oxidative addition and formation of the cis-Co(III) dihydride complex, cis-[(iPrPNP)Co(H)2L]+ where L = THF or N2. The addition of H2 was reversible as evidenced by the dynamics observed by variable temperature 1H NMR spectroscopy and the regeneration of [(iPrPNP)Co(N2)]+ upon exposure to dinitrogen. In contrast, addition of HBPin, (Pin = pinacolato) B2Pin2 and aryl halides resulted in the formation of net one-electron oxidation products: cationic Co(II)-boryl and Co(II)-halide/aryl complexes, respectively. All products were structurally characterized by X-ray crystallography and the electronic structures were determined by a combination of magnetic moment measurements, EPR spectroscopy and DFT calculations. Monitoring the addition of HBPin to [(iPrPNP)Co(N2)]+ provided evidence for a transient Co(III) oxidative addition product that likely undergoes comproportionation with the cobalt(I) starting material to generate the observed Co(II) products." @default.
- W2915691450 created "2019-03-02" @default.
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- W2915691450 creator A5089583565 @default.
- W2915691450 date "2019-02-20" @default.
- W2915691450 modified "2023-10-16" @default.
- W2915691450 title "Oxidative Addition of Dihydrogen, Boron Compounds, and Aryl Halides to a Cobalt(I) Cation Supported by a Strong-Field Pincer Ligand" @default.
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- W2915691450 doi "https://doi.org/10.1021/acs.organomet.8b00870" @default.
- W2915691450 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6449856" @default.
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- W2915691450 hasPublicationYear "2019" @default.
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