4.8 Article

Synthesis, Characterization, and Alkyne Trimerization Catalysis of a Heteroleptic Two-Coordinate FeI Complex

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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 137, 期 19, 页码 6366-6372

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AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b02504

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资金

  1. National Science Foundation [CHE-1265674]
  2. National Institutes of Health [S10-RR027172]
  3. Berkeley College of Chemistry NMR facility [SRR023679A]
  4. Development and Promotion of Science and Technology scholarship - government of Thailand
  5. Direct For Mathematical & Physical Scien [1265674] Funding Source: National Science Foundation
  6. Division Of Chemistry [1265674] Funding Source: National Science Foundation

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The synthesis of the first heteroleptic, two-coordinate Fe-I complex IPr-Fe-N(SiMe3)DIPP (1) (IPr = , 1,3-2bis(2,6-diisopropylphenyl)imidazol-2-ylidene; DIPP = 2,6-Pr-i(2)-C6H3) is reported. Protonation of the Fe-II bis(amido) complex Fe[N(SiMe3)DIPP](2) followed by addition of IPr and reduction by potassium graphite in a one-pot reaction results in good yields of 1. The redox activity of 1 and comparison between 1 and its reduction ptoduct by Fe-57 Mossbauer spectroscopy are discussed, and the :reduction. was found to be metal,based lather than ligand-based. The activity of 1 toward the catalytic cyclotrimerization of terminal and internal alkynes is described.

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