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Unusually High Barriers to Rotation Involving the Tetrahedral Carbon Atom
Author(s) -
Ōki Michinori
Publication year - 1976
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.197600871
Subject(s) - triptycene , rotation (mathematics) , conformational isomerism , tetrahedron , fluorene , crystallography , atom (system on chip) , carbon atom , chemistry , carbon fibers , computational chemistry , materials science , molecule , geometry , mathematics , organic chemistry , computer science , ring (chemistry) , polymer , composite number , embedded system , composite material
Rotation about CC single bonds in suitably substituted compounds gives rise to rotational isomers (also called rotamers) which can be isolated if the barrier to rotation is high enough. The present article considers derivatives of triptycene and fluorene whose barriers to rotation are of the order of 30 kcal/mol.