Quantitative evidence from n.m.r. spectroscopy is presented which strengthens the assumption that dimethyl-formamide molecules associate as dimers at low concentrations in carbon tetrachloride solution. Values for ΔH° and ΔS° for the dimerization are estimated as well as for δm and δd, the limiting N-methyl-hydrogen chemical shift for monomer and dimer.
M. Rabinovitz and A. Pines, J. Chem. Soc. B, 1968, 1110 DOI: 10.1039/J29680001110
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