Tris(pentafluorophenyl)borane → Lithium tetrakis(pentafluorophenyl)borate

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Pentafluorophenyllithium prepared from bromopentafluorobenzene (152 mmol) and butyllithium (152 mmol), was reacted with 45 mmol of boron trichlorode in hexane to obtain tris(pentafluorophenyl)boron as a white solid product. The obtained tris(pentafluorophenyl)boron (41 mmol) was reacted with pentafluorophenyllithium (41 mmol) to isolate lithium tetrakis(pentafluorophenyl)borate as a white solid product.

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