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Applications de la spectrographie de resonance magnetique nucleaire (R.M.N.) dans le domaine des derives polycycliques a caractere aromatique-II. Spectres de 20 hydrocarbures alternants non substitués

par Martin, Ricardo;Defay, Nicole ;Evrard, France ;Delavarenne, Serge
Référence Tetrahedron, 20, 4, page (1073-1090)
Publication Publié, 1964

Article révisé par les pairs

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Résumé :

NMR spectra of 20 unsubstituted alternant hydrocarbons including two new ring systems (XIX and XX), have been recorded at 60 Mc. The data collected-chemical shifts, width and spacing of the band systems (Fig.1)-are examined in the perspective of future work on substituted hydrocarbons. Attention is drawn to the fact that the spectrum of dibenz[g,p]chrysene (XVII) contains only two instead of the three expected band systems. The quasi olefinic nature of the central bond of this hydrocarbon may be responsable of the observed spectral anomaly. © 1964.