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On the electronic impact of abnormal C4-bonding in N-heterocyclic carbene complexes

Heckenroth, Marion ; Neels, Antonia ; Garnier, Michael G. ; Aebi, Philipp ; Ehlers, Andreas W. ; Albrecht, Martin

In: Chemistry - A European Journal, 2009///doi: 10.1002/chem.200900249

Sterically similar palladium dicarbene complexes have been synthesized that comprise permethylated dicarbene ligands which bind the metal center either in a normal coordination mode via C2 or abnormally via C4. Due to the strong structural analogy of the complexes, differences in reactivity patterns may be attributed to the distinct electronic impact of normal versus abnormal carbene bonding,...

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Abnormal carbenes as ligands in transition metal chemistry: curiosities with exciting perspectives

Albrecht, Martin

In: Chimia, 2009, vol. 63, no. 3, p. 105-110

This review compiles the advances achieved in our laboratories using abnormal and less heteroatom-stabilized carbenes as ligands for transition metal chemistry. Fundamental studies allowed the evaluation of the impact of this new class of ligands both electronically and sterically. Based on these results, initial catalytic applications have been devised in the area of H-H and C-H bond activation,...

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