| Title |
Stoichiometric CO Bond Oxidative Addition of Benzophenone by a Discrete Radical Intermediate To Form a Cobalt(I) Carbene
|
|---|---|
| Published in |
Journal of the American Chemical Society, April 2013
|
| DOI | 10.1021/ja4022683 |
| Pubmed ID | |
| Authors | |
| Abstract |
Single electron transfer from the Zr(III)Co(0) heterobimetallic complex (THF)Zr(MesNP(i)Pr2)3Co-N2 (1) to benzophenone was previously shown to result in the isobenzopinacol product [(Ph2CO)Zr(MesNP(i)Pr2)3Co-N2]2 (2) via coupling of two ketyl radicals. In this work, thermolysis of 2 in an attempt to favor a monomeric ketyl radical species unexpectedly led to cleavage of the C-O bond to generate a Zr/Co μ-oxo species featuring an unusual terminal Co═CPh2 carbene linkage, (η(2)-MesNP(i)Pr2)Zr(μ-O)(MesNP(i)Pr2)2Co═CPh2 (3). This complex was characterized structurally and spectroscopically, and its electronic structure is discussed in the context of density functional theory calculations. Complex 3 was also shown to be active toward carbene group transfer (cyclopropanation), and silane addition to 3 leads to PhSiH2O-Zr(MesNP(i)Pr2)3Co-N2 (5) via a proposed Co-alkyl bond homolysis route. |
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
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| Unknown | 1 | 50% |
Demographic breakdown
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| Scientists | 2 | 100% |
Mendeley demographics
Geographical breakdown
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|---|---|---|
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| Netherlands | 1 | 1% |
| Korea, Republic of | 1 | 1% |
| Australia | 1 | 1% |
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Demographic breakdown
| Readers by professional status | Count | As % |
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| Researcher | 12 | 17% |
| Student > Bachelor | 7 | 10% |
| Professor > Associate Professor | 6 | 9% |
| Student > Master | 5 | 7% |
| Other | 9 | 13% |
| Unknown | 11 | 16% |
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|---|---|---|
| Chemistry | 52 | 75% |
| Agricultural and Biological Sciences | 2 | 3% |
| Physics and Astronomy | 2 | 3% |
| Computer Science | 1 | 1% |
| Engineering | 1 | 1% |
| Other | 0 | 0% |
| Unknown | 11 | 16% |