An investigation of liquid acetic acid and its mixtures with CCl4 and cyclohexane by the nuclear magnetic relaxation method

The systems CH3COOH-CCl4 and CH3COOH-C6D12 were studied by measuring the magnetic relaxation times T1 of the various protons in these mixtures. From these data, intermolecular relaxation rates arising from interactions among the protons of OH- and CH3-groups were determined. By means of the association parameter A association between various groups of acetic acid in mixtures with CCL4 and C6D12 has been investigated. Closest distances of approach between various protons of acetic acid and configurations of maximum probability are reported for the pure liquid and the mixtures. For pure acetic acid a comparison with X-ray and neutron scattering results is given. (orig.)