Interbenzylic19F,19F spin-spin coupling constants in bis(fluoromethyl) arenes
摘要:
AbstractFive‐ to eleven‐bond F,F spin coupling is observed in bis(fluoromethyl)arenes. According to INDO MO calculations, these couplings are transmitted mainly via the aromatic π‐system. The low preference of 1,4‐(CH2F)2‐benzene for the conformation in which the CF bonds are perpendicular to the aromatic ring is
shown by the strong increase of7J(FF) upon double ortho‐substitution.
Interbenzylic19F,19F spin-spin coupling constants in bis(fluoromethyl) arenes
摘要:
AbstractFive‐ to eleven‐bond F,F spin coupling is observed in bis(fluoromethyl)arenes. According to INDO MO calculations, these couplings are transmitted mainly via the aromatic π‐system. The low preference of 1,4‐(CH2F)2‐benzene for the conformation in which the CF bonds are perpendicular to the aromatic ring is
shown by the strong increase of7J(FF) upon double ortho‐substitution.