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A 9‐Borylated Acridinyl Radical
Author(s) -
Chiu ChingWen,
Gabbaï François P.
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200604119
Subject(s) - unpaired electron , borane , electron paramagnetic resonance , cationic polymerization , chemistry , spin density , molecule , reduction (mathematics) , crystallography , spectroscopy , electron , spin (aerodynamics) , photochemistry , nuclear magnetic resonance , polymer chemistry , physics , organic chemistry , condensed matter physics , quantum mechanics , mathematics , geometry , thermodynamics , catalysis
An odd molecule with an unpaired electron : Reduction of a cationic borane bearing an α‐methylium center leads to the formation of a neutral radical, which has been studied by X‐ray analysis and EPR spectroscopy. The computed spin density (see picture, right) of this radical shows substantial localization of the unpaired electron in a polarized BC π‐bonding orbital, a conclusion corroborated by an unusually short BC bond.