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The Taming of Cyclobutadiene
Author(s) -
Cram Donald J.,
Tanner Martin E.,
Thomas Robert
Publication year - 1991
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.199110241
Subject(s) - cyclobutadiene , singlet state , ground state , chemistry , computational chemistry , physics , photochemistry , atomic physics , organic chemistry , molecule , excited state
The taming of cyclobutadiene was accomplished in the interior of the hemicarcerand 1 . Cyclobutadiene is a stable compound with a singlet ground state when it is synthesized in the interior of 1 . In order to synthesize the incarcerated cyclobutadiene and to characterize its structure, one bimolecular, three photochemical, and two thermal reactions were carried out in the interior of 1 . The authors consider it both realistic and useful to regard the internal phase of carcerands and hemicarcerands as a new state of matter.