Royal Society of Chemistry, Chemical Communications, 2(46), p. 315-317, 2010
DOI: 10.1039/b918660c
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Abnormal C4-bonding of N-heterocyclic carbenes effectively modulates the electron density at rhodium and allows for the selective cleavage of an unactivated C(sp(3))-H bond, whereas no such intramolecular C-H bond breaking is observed when the carbene binds normally through the C2 carbon.