In the crystal structure of the title compound, CHBN, the B atom acts to reduce the delocalization of the nitro-gen 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 nitro-gen lone pair is not fully available to participate in the bond.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9815137 | PMC |
http://dx.doi.org/10.1107/S2056989022011768 | DOI Listing |
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