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1,7‐Cyclopentenonorbornadiene: Synthesis and Crystal structure
Author(s) -
Griesbeck Axel G.,
Deufel Thomas,
Peters Karl,
Peters EvaMaria,
von Schnering Hans Georg
Publication year - 1993
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.199300971
Subject(s) - crystal structure , crystallography , polarization (electrochemistry) , double bond , crystal (programming language) , chemistry , materials science , nuclear magnetic resonance , physics , computer science , programming language
A strong polarization of the exocyclic double bond C7–C8 in the 1,7‐cyclopentenonorbornadiene 1 is deduced from the drastic difference of the shifts of the corresponding signals in the 13 C NMR spectrum. The crystal structure analysis of 1 , however, gives no indication of homoconjugative effects, to which this phenomenon was attributed in related systems.