Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 695, Issue 1, Pages 1-5Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2009.09.024
Keywords
Tin; Iron; Bimetallic cluster; C-H activation; Radical mechanism
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Funding
- University of Miami
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The bimetallic cluster complex Fe-2(mu-SnBu2t)(2)(CO)(8), 1, selectively activates the benzylic C-H bond in solvent toluene at reflux conditions to afford the complex Fe-2[mu-SnBut(CH2Ph)](2)(CO)(8), 3, where two of the But groups in 1 have been replaced with benzyl groups. Similarly 1 also activates the benzylic C-H bond in solvent m-xylene to yield complexes Fe-2[mu-SnBut(m-CH2PhMe)](2)(CO)(8), 4, Fe-2[mu-SnBut(m-CH2PhMe)][mu-Sn(m-CH2PhMe)(2)](CO)(8), 5, and Fe-2[mu-Sn(m-CH2PhMe)(2)](2)(CO)(8), 6, where two, three and four of the Bu-t groups in 1 have been replaced by m-tolyl groups, respectively. A mechanism based on a radical pathway is proposed for the C-H activation by 1. (c) 2009 Elsevier B.V. All rights reserved.
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