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Structure of Tetracyclo[6.2.1.1 3,6 .0 2,7 ]dodeca‐4,9‐diene: A Diolefin with Close Double Bonds
Author(s) -
Ermer Otto,
Bödecker ClausDieter,
Preut Hans
Publication year - 1984
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.198400551
Subject(s) - double bond , diene , physics , symmetry (geometry) , phthalic acid , value (mathematics) , chemistry , crystallography , atomic physics , mathematics , nuclear magnetic resonance , geometry , organic chemistry , statistics , natural rubber
The distance between the almost parallel double bonds in 1 has been calculated with a consistent force field to be 2.756 Å. A value 0.165 Å higher, however, was determined for the phthalic acid semiester of 1 coupled via C‐11. The increased separation is attributed to orbital‐symmetry effects.