| 摘要 |
A boron compound in the form of fine particles characterized in that the boron compound is one or more boron compounds selected from (1) to (3) described below and has a maximum particle diameter of 50 µm or less: (1) a boron compound represented by the general formula: BQ 1 Q 2 Q 3 ; (2) a boron compound represented by the general formula: G + (BQ 1 Q 2 Q 3 Q 4 ) - ; and (3) a boron compound represented by the general formula: (L-H) + (BQ 1 Q 2 Q 3 Q 4 ) -
(in each of the above general formulae, B is a boron atom in the trivalent valence state, Q 1 to Q 4 are a halogen atom, a hydrocarbon group, a halogenated hydrocarbon group, a substituted silyl group, an alkoxy group or a di-substituted amino group, which may be the same or different, respectively. G + is an inorganic or organic cation, L is a neutral Lewis base, and (L-H) + is a BrÆnsted acid.) |
