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1 H NMR investigation of selected heptafulvenes
Author(s) -
Bönzli Peter,
Neuenschwander Markus
Publication year - 1991
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260290107
Subject(s) - chemistry , substituent , ring (chemistry) , delocalized electron , fluorine 19 nmr , proton nmr , nmr spectra database , carbon 13 nmr , electron delocalization , high resolution , crystallography , carbon 13 nmr satellite , stereochemistry , nuclear magnetic resonance spectroscopy , spectral line , computational chemistry , organic chemistry , physics , remote sensing , astronomy , geology
The 1 H NMR spectra of selected heptafulvenes 2a–e were analysed under high‐resolution conditions. The results are in agreement with a symmetrical boat conformation for 2a and with a nearly planar conformation of 2e. Within the series 2a–e, ring planarization and π‐delocalization increase. Substituent effects on NMR parameters are discussed.