Fig. 7: Energy profile of reduction of Ni(II) species and subsequent Ni(I)/Ni(III) catalytic cycle.
From: Nickel catalyzed C-N coupling of haloarenes with B2N4 reagents
A1: B2(NMe2)4(acac) radical species; A2: B2(NMe2)3Br; int intermediate, TSÂ transition state.
