Stabilizer compounds (fluoroaryl) borane and methods for stabilizing and crystallizing compounds (fluoroaryl) borane.

A (fluoroaryl) borane expressed by the general formula (1): wherein each of R 1 -R 5 is a hydrogen atom, a fluorine atom, a group hydrocarbon, or an alkoxy group, WITH provided at SUB least one of R, -R 5 1 REPRESENT a fluorine atom, X represents a Tomo fLUORINE, a chlorine atom, a bromine atom, or iodine atom, n represents 2 or 3, Stabilizing LEAVING COEXIST SALES OF METALS CONTAINING iNORGANIC a fluorine WITH (fluoroaryl) borane in a solution of hydrocarbons. ONCE THE SOLUTION FOCUSES ON OIL SALES PRESENCE OF METAL INORGANIC WITHDRAW metal salts inorganic and the (fluoroaryl) borane crystallizes. CONSEQUENTLY, it has become possible to propose a method for stabilizing a (fluoroaryl) borane by suppressing the decomposition reaction while the solution is heated and concentrated, stored (preserved), or transport / TRANSFERRED, AND A methodof EFFICIENT INSULATION Crystallization CRYSTALS (DUST) HIGH PURITY (fluoroaryl) borane.