Abstract
The synthesis and characterization of a series of cobalt complexes featuring a pincer bis(carbene) ligand of the meta-phenylene-bridged bis-N-heterocyclic carbene (ArCCC, Ar = 2,6-diispropylphenyl or mesityl) are reported. Cleavage of the aryl C-H bond of the ligand was achieved in a one-pot metalation procedure using Co(N(SiMe3)2)2(py)2, an equivalent of exogenous base, and trityl chloride to form the (DIPPCCC)CoCl2py complex. This species could be reduced to the Co(ii) and Co(i)-N2 molecules with the appropriate equivalents of reductant. Subsequent generation of (MesCCC)CoI-III derivatives with the mesityl ligand proceeded in good yields. A suite of characterization techniques and the interconversion between all three oxidation states of the cobalt complexes is described.
Original language | English (US) |
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Pages (from-to) | 9805-9811 |
Number of pages | 7 |
Journal | Dalton Transactions |
Volume | 45 |
Issue number | 24 |
DOIs | |
State | Published - Jan 1 2016 |
ASJC Scopus subject areas
- Inorganic Chemistry