Proton magnetic relaxation in toluene and some derivatives
Spin-lattice relaxation time studies are reported of protons in solid solutions of toluene in toluene-d8, and of the derivatives C6F5CH3, C6H5CF3, 2-C6H4FCF3, 2-C6H4ClCF3, 2-C6H4FCH3, 3-C6H4FCH3, 4-C6H4FCH3, 2,3,5,6-C6HF4CH3, 2-C6H4ClCH3, 2,6-C6H3Cl2CH3 and 2,6-C6H3ClFCH3.
The temperature dependence of the relaxation times reflects the molecular motions occurring in the crystalline state and yields values for the hindering potential barriers. The data are correlated with the molecular structures and the importance of intermolecular effects demonstrated. Some new thermal data are also presented.