Crystal structure of bis(mesityl)(pyrrol-1-yl)borane

Abstract

In the crystal structure of the title compound, C22H26BN, the B atom acts to reduce the delocalization of the nitrogen lone-pair electron density into the pyrrole ring, so that the two N—C bonds increase in length to 1.4005 (14) and 1.3981 (14) Å. The N—B bond length is 1.4425 (15) Å, which is longer than a typical N—B bond because the nitrogen lone pair is not fully available to participate in the bond.