One electron reduction transforms high-valent low-spin cobalt alkylidene into high-spin cobalt(ii) carbene radical
| Autor: | James A. Bellow, Gregory Morrison, Hans-Conrad zur Loye, Stanislav Groysman, Richard L. Lord, Amanda Grass |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Double bond Isocyanide Metals and Alloys chemistry.chemical_element General Chemistry Medicinal chemistry Catalysis Surfaces Coatings and Films Electronic Optical and Magnetic Materials Ketenimine chemistry.chemical_compound Deprotonation chemistry Nucleophile Materials Chemistry Ceramics and Composites One-electron reduction Cobalt Carbene |
| Zdroj: | Chemical communications (Cambridge, England). 56(60) |
| ISSN: | 1364-548X |
| Popis: | One electron reduction of formally CoIV(OR)2(CPh2) forms the [CoII(OR)2(CPh2)]- anion. Whereas low-spin Co(OR)2([double bond, length as m-dash]CPh2) demonstrated significant alkylidene character, the high-spin [Co(OR)2(CPh2)]- anion features a rare Co(ii)-carbene radical. Treatment of [Co(OR)2(CPh2)][CoCp*2] with xylyl isocyanide triggers formation of two new C-C bonds, and is likely mediated by nucleophilic attack of deprotonated CoCp*2+ on a transient ketenimine. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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