Premium
Structural Evidence for Antiaromaticity in Free Boroles
Author(s) -
Braunschweig Holger,
Fernández Israel,
Frenking Gernot,
Kupfer Thomas
Publication year - 2008
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.200704771
Subject(s) - antiaromaticity , ring (chemistry) , intermolecular force , solid state , content (measure theory) , chemistry , computer science , computational chemistry , organic chemistry , mathematics , aromaticity , molecule , mathematical analysis
Pentaphenylborole and a ferrocenylborole were synthesized and structurally characterized. Both experimental and theoretical data reveal that rather weak intermolecular interactions are able to significantly alter the bond lengths in the borole ring of pentaphenylborole (see picture). Moreover, the high Lewis acidity of boroles is demonstrated by a significant Fe⋅⋅⋅B interaction in the ferrocenylborole in the solid state.