Premium
Synthesis and Properties of 1,3,5,7‐Tetra‐ tert ‐butyl‐ s ‐indacene
Author(s) -
Hafner Klaus,
Stowasser Bernd,
Krimmer HansPeter,
Fischer Stefanie,
Böhm Michael C.,
Lindner Hans Jörg
Publication year - 1986
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.198606301
Subject(s) - delocalized electron , tetra , chemistry , electron delocalization , derivative (finance) , crystal structure , crystal (programming language) , crystallography , stereochemistry , medicinal chemistry , organic chemistry , computer science , financial economics , programming language , economics
To check the influence of substituents on the bonding of the 12π‐perimeter of s ‐indacene , a tetraalkyl derivative, the title compound 1 , was synthesized. 1 , red needles, is weakly paratropic. Crystal structure analysis and NMR investigations indicate a delocalized or a localized π‐electron system with only a small energy barrier between the π‐bond isomers.