Lewis acidity of dodecafluoro-octaborane(12) and trifluorophosphine–tris(difluoroboryl)borane (1/1): a nuclear magnetic resonance study of reactions with trimethylamine

Abstract

Low-temperature n.m.r. studies of the Me₃N + F₃P·B(BF₂)₃ system indicate the formation of adducts F₃P·B-(BF₂NMe₃)_n(BF₂)_3–n(n= 1–3). The compound B₈F₁₂ is very reactive toward Me₃N in dichloromethane solution at –90 °C and the only product tentatively identified is Me₃N·B(BF₂)₃.