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Issue 40, 2015
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The long-sought seventeen-electron radical [(C6Me6)Cr(CO)3]+: isolation, crystal structure and substitution reaction

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Abstract

A highly air-sensitive seventeen-electron half-sandwich radical, [(C6Me6)Cr(CO)3]+, which has been long sought over 40 years, was isolated and structurally characterized. EPR spectroscopy and theoretical calculations indicate that the spin density mainly resides on the chromium atom. The radical can undergo a substitution reaction with PPh3 to form a more stable cation, [(C6Me6)Cr(CO)2(PPh3)]+. This work provides a direct observation of the radical process for CO-substitution reactions found in (arene)M(CO)3 (M = Cr, Mo, or W) systems, and suggests that other stable radicals of the type [(arene)M(CO)3]+ are accessible.

Graphical abstract: The long-sought seventeen-electron radical [(C6Me6)Cr(CO)3]+: isolation, crystal structure and substitution reaction

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Publication details

The article was received on 07 Mar 2015, accepted on 24 Mar 2015 and first published on 24 Mar 2015


Article type: Communication
DOI: 10.1039/C5CC01941A
Citation: Chem. Commun., 2015,51, 8410-8413
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    The long-sought seventeen-electron radical [(C6Me6)Cr(CO)3]+: isolation, crystal structure and substitution reaction

    W. Wang, X. Wang, Z. Zhang, N. Yuan and X. Wang, Chem. Commun., 2015, 51, 8410
    DOI: 10.1039/C5CC01941A

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