Hochaufgelöste Protonenresonanzspektren mit direkter magnetischer Dipol-Dipol-Wechselwirkung, Teil III

Abstract

The analysis of the proton magnetic resonance spectra of a 3-protonsystem with C2-symmetry and of a special 4-protonsystem (rotating methylgroup and one interacting proton) is given in terms of the magnetic dipole-dipole couplings and the chemical shifts. The application to the spectrum of 3,5-dichloro-benzoic acid, dissolved in nematic 6-n-hexyloxy-2-naphthoic acid, and to 2,3,5,6- and 2,3,4,6-tetrachloro-anisole and 2,3,5,6-tetrachloro-toluene, dissolved in nematic 4,4-di-n-hexyloxy- or -heptyloxy-azoxybenzene gives information on the molecular orientation and the anisotropy of the chemical shifts. The ratio of the proton-proton distances of the toluene compound is determined.