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Synthesis and characterization of a dinuclear Ni complex containing a bridging CNC pincer ligand |
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| Authors: | Agnes Mrutu Richard A. Kemp |
| Affiliation: | a Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM 87131, USA b Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195, USA c Advanced Materials Laboratory, Sandia National Laboratories, Albuquerque, NM 87106, USA |
| Abstract: | The reaction of the bis(carbene) pincer ligand MeCNC with nickel acetate and Bu4NBr produced [(MeCNC)3Ni2]4+[Br]4 (2), a complex that contains the MeCNC ligand in both traditional tridentate chelating modes as well as in a unique, bridging mode between two Ni2+ ions. While 2 could not be crystallized or isolated in a pure form, the anion exchange of bromide with triflate yielded [(MeCNC)3Ni2]4+[OTf]4 (4), which could be recrystallized from methanol and isolated pure. Single-crystal X-ray analysis of 4 confirmed the unusual dual-coordination modes of the MeCNC ligand towards Ni2+ in these species, and represents the initial example of a Group 10 complex of a bridging CNC ligand. |
| Keywords: | X-ray crystallography Pincer ligand Carbene ligands Dinuclear Ni complexes |
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