Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 22, Pages 6928-6931Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b03293
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Funding
- National Science Foundation [CHE-1362854]
- University of Pennsylvania
- NSF
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1362854] Funding Source: National Science Foundation
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Structurally authenticated, terminal lanthanide-ligand multiple bonds are rare and,expected to be highly reactive. Even capped with an alkali metal cation, poor orbital energy matching and. overlap of metal and ligand valence orbitals should result in strong charge polarization within such bonds. We expand on a new strategy for isolating terminal lanthanide-ligand multiple bonds using cerium(IV) complexes In the Current,case, our tailored tris(hydroxylaminato), ligand framework, TriNOx(3-), provides steric protection against ligand scrambling and. metal complex oligomerization and electronic protection against reduction. This strategy culminates in isolation of the first formal Ce=N bonded moiety in the complex [K(DME)(2)][Ce=N(3,5-(CF3)(2)C6H3)(TriNOx)], whose Ce=N bond is the shortest known at 2.119(3) angstrom.
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