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Tris(fluoren‐9‐ylidene)cyclopropane, a Novel [3]Radialene
Author(s) -
Iyoda Masahiko,
Otani Hiroyuki,
Oda Masaji
Publication year - 1988
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.198810801
Subject(s) - cyclopropane , tris , dipole , chemistry , resonance (particle physics) , symmetry (geometry) , propeller , crystallography , stereochemistry , ring (chemistry) , physics , organic chemistry , geometry , atomic physics , mathematics , geology , biochemistry , oceanography
NMR data show that the title compound 2 has a highly symmetrical structure—a propeller‐like arrangement having D 3 symmetry is plausible. Compound 2 was prepared by cyclotrimerization of the ate complex 1 . An explanation for the easy, reversible, two‐step reduction of 2 to its dianion may be provided by the importance of the dipolar resonance structure 3 in describing the actual structure of the dianion.