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1H and 13C NMR spectra of multibridged [2n]cyclophanes

✍ Scribed by Ludger Ernst; Virgil Boekelheide; Henning Hopf

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 676 KB
Volume: 31
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260310713

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✦ Synopsis

Abstract

The ^1^H and ^13^C NMR spectra of all [2~n~] cyclophanes with the same substitution pattern in both benzene rings and of the skew 2.2.2(1,2,5)cyclophane were assigned by one‐dimensional NOE difference and two‐dimensional correlation spectroscopy. The ^1^H NMR spectra of the bridge protons including the ^13^C satellites of the symmetrical compounds [2.2]paracyclophane, 2.2.2cyclophane and superphane were analysed by iterative methods. Chemical shifts and H,H coupling constants are discussed with regard to molecular geometries.

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