Volume 127, Issue 43 pp. 12864-12868
Zuschrift

Kinetic Destabilization of Metal–Metal Single Bonds: Isolation of a Pentacoordinate Manganese(0) Monoradical

Douglas W. Agnew

Douglas W. Agnew

Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC 0358, La Jolla, CA 92193 (USA)

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Dr. Curtis E. Moore

Dr. Curtis E. Moore

Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC 0358, La Jolla, CA 92193 (USA)

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Prof. Arnold L. Rheingold

Prof. Arnold L. Rheingold

Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC 0358, La Jolla, CA 92193 (USA)

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Prof. Joshua S. Figueroa

Corresponding Author

Prof. Joshua S. Figueroa

Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC 0358, La Jolla, CA 92193 (USA)

Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC 0358, La Jolla, CA 92193 (USA)Search for more papers by this author
First published: 02 September 2015
Citations: 4

Abstract

The 17e monoradical [Mn(CO)5] is widely recognized as an unstable organometallic transient and is known to dimerize rapidly with the formation of a MnMn single bond. As a result of this instability, isolable analogues of [Mn(CO)5] have remained elusive. Herein, we show that two sterically encumbering isocyanide ligands can destabilize the MnMn bond leading to the formation of the isolable, manganese(0) monoradical [Mn(CO)3(CNArDipp2)2] (ArDipp2=2,6-(2,6-(iPr)2C6H3)2C6H3). The persistence of [Mn(CO)3(CNArDipp2)2] has allowed for new insights into nitrosoarene spin-trapping studies of [Mn(CO)5].

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