Abstract
The bright red title compound 1 was synthesized from (2-lithiophenyl)diphenylamine and bis(pentafluorophenyl)boron chloride. Its reactions with small acids like H 2O and HCl proceeded easily giving zwitterionic compounds. For 1 and its water adduct 2 the crystal structures were determined, the latter featuring an ammonium borate structure containing a short intramolecular hydrogen bond bridge. Treatment of 1 with Jutzi's acid, [H(OEt 2) 2][B(C 6F 5) 4], did not result in protonation of the nitrogen, but reaction of 1 with LiH in the presence of 12-crown-4, led to the isolation of the aminoborate [1-(Ph 2N)-2-{B(H)(C 6F 5) 2}C 6H 4][Li(12-crown-4)] ( 3). Borohydride 3 reacted with Jutzi's acid to regenerate 1 and liberate hydrogen.
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