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Proton magnetic resonance spectra of the atropisomers of ortho-hexaphenylene

Ernst, Ludger, Mannschreck, Albrecht and Rümpler, K.-D. (1973) Proton magnetic resonance spectra of the atropisomers of ortho-hexaphenylene. Organic Magnetic Resonance 56 (3), pp. 125-128.

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Abstract

The structures of the atropisomers of o-hexaphenylene are confirmed by their proton magnetic resonance spectra. The centrosymmetrical isomer 1a gives rise to an AA′BB′ spectrum, whereas the helical isomer 1b displays an AA′BB′ spectrum for two of its aromatic rings and an ABCD for the remaining four rings. Long-range coupling between the AA′BB′ and ABCD parts of 1b leads to a tentative assignment of the protons. An analysis of the spectrum of o-tetraphenylene (2) is also given.


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Item type:Article
Date:1973
Additional Information (public):späterer Zeitschr.titel: Magnetic resonance in chemistry
Institutions:Chemistry and Pharmacy > Institut für Organische Chemie > Alumni or Retired Professors > Prof.Dr. Mannschreck
Identification Number:
ValueType
10.1002/mrc.1270050304DOI
Dewey Decimal Classification:500 Science > 540 Chemistry & allied sciences
Status:Published
Refereed:Unknown
Created at the University of Regensburg:Unknown
Item ID:18456
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