A T-shaped Ni[κ²-(CF₂)₄-] NHC complex: unusual C_sp³ -F and M-C^F bond functionalization reactions.

ABSTRACT: A T-shaped octafluoronickelacyclopentane-NHC complex is prepared and characterized. While the solid-state structure includes a weak isopropyl-CH₃ agostic interaction, the reactivity of this complex with Lewis- and Brønsted acids is clearly enhanced by its low coordination number. Reaction with Me₃SiOTf, for example, yielded a rare metal-heptafluorocyclobutyl complex whereas carboxylic acids gave substitution at the α-carbon and/or Ni-C^F bond protonolysis to afford thermally robust 4H-octafluorobutyl Ni complexes.

SUBMITTER: Andrella NO 

PROVIDER: S-EPMC6054117 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature