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Synthesis and Study of Janus Bis(carbene)s and Their Transition-Metal Complexes


  • We are grateful to the U.S. Army Research Office (W911NF-05-1-0430) and The University of Texas at Austin for their generous support of this research. A.J.B. thanks The University of Texas at Austin for a University Continuing Fellowship. J. W. Kamplain is acknowledged for his assistance.


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Deuces wild: From catalysis through materials science to biology, N-heterocyclic carbenes (NHCs) can truly be regarded as a wild card of ligands. A new series of “two-faced” (Janus-type) ligands composed of two linearly opposed NHCs fused to an arene linker has been synthesized and can be used to prepare discrete bimetallic complexes.