Journal
ORGANOMETALLICS
Volume 34, Issue 2, Pages 399-407Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om5007177
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Funding
- NSF [CHE-1351961]
- University of Illinois at Urbana-Champaign
- NSF
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1351961] Funding Source: National Science Foundation
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The synthesis and characterization of a series of nickel(II) pincer complexes of the meta-phenylene-bridged bis-N-heterocyclic DIPPCCC ligand framework are reported. Characterization of the Ni(II)Cl complex revealed a square planar species with Cl- and the anionic carbon trans to one another. Formation of Ni(II) alkyl complexes derived from complex 1 was accomplished by addition of LiR [R = CH3 (2); CH2SiMe3 (3)]. Furthermore, we report a synthetic pathway to access the catalytically relevant Ni(II)H species (DIPPCCC)NiH (4), by direct oxidative addition of an aryl C-H bond across a Ni(0) center. Complexes 1-4 have been characterized by H-1 and C-13 NMR and electronic absorption spectroscopies as well as X-ray crystallography.
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