Synthesis and Characterization of Heteroleptic Ni(II)
Bipyridine Complexes Bearing Bis(N-heterocyclic carbene) Ligands
Posted on 2018-01-16 - 20:37
The synthesis and
characterization of four new Ni(II) bis(NHC)
bipy complexes (bipy = 4, 4′-bipyridine, NHC = N-heterocyclic
carbene) are reported. These represent the first examples of the NiII(NHC2) L2 class of compounds, where
L is a two-electron-donor ligand. The introduction of a double propyl
bridged bis-NHC ligand (CProp2C) imparts reversibility
to the electrochemistry of these complexes. The electrochemical response
includes two reductions, the first believed to be bipy ligand based,
bipy0/–, and the second metal based. The unusual
ligand arrangements in these complexes result in electronic structures
in which both the HOMOs and LUMOs are ligand-based, as determined
by DFT analysis of all four compounds.
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Reineke, Mark H.; Porter, Tyler M.; Ostericher, Andrew L.; Kubiak, Clifford P. (2018). Synthesis and Characterization of Heteroleptic Ni(II)
Bipyridine Complexes Bearing Bis(N-heterocyclic carbene) Ligands. ACS Publications. Collection. https://doi.org/10.1021/acs.organomet.7b00847
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AUTHORS (4)
MR
Mark H. Reineke
TP
Tyler M. Porter
AO
Andrew L. Ostericher
CK
Clifford P. Kubiak