Mononuclear, Nonheme, High-Spin {FeNO}^7/8 Complexes Supported by a Sterically Encumbered N₄S-Thioether Ligand.

ABSTRACT: The synthesis of a new nonheme iron NO binding complex, [Fe^II(CH₃CN)(N3Py^2PhSEtCN)](BF₄)₂ (1), is reported. Complex 1, which contains two sterically encumbering phenyl substituents, exhibits a high-spin (hs) Fe^II (S = 2) ground state in contrast to the S = 0 ground state for unsubstituted [Fe^II(CH₃CN)(N3PySEtCN)(BF₄)₂. Reaction of 1 with NO_(g) in CH₃CN yields an {FeNO}⁷ (S = ³/₂) complex 2, which slowly decays at 25 °C with loss of NO^• to regenerate 1. One-electron reduction of 2 with Cr(C₆H₆)₂ at -40 °C yields the metasta

SUBMITTER: Confer AM 

PROVIDER: S-EPMC6715289 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature