Exploring opportunities for tuning phenyltris(pyrazol-1-yl)borate donation by varying the extent of phenyl substituent fluorination

Complexes of 3,4,5-trifluorophenyl- and 3,5-bis(trifluoromethyl)phenyltris(pyrazol-1-yl)borates have been prepared for comparison to pentafluorophenyl analogues to assess if donor modulation at κ 3 - N , N , N bound metals is feasible via this strategy.