Thermodynamic constants for the formation of the 1 : 1 molecular complex between trimethylamine (TMA) and SOz have been obtained from PVT and vapor-density data for equimolar mixtures of these gases in the temperature range 35-44'.Results are in excellent agreement with those obtained previously from measurements of ultraviolet spectra. The present research supports the previous conclusion that the extinction coefficient and oscillator strength of the charge-transfer (CT) band of TMA-SOZ are nearly the same in the gas phase as in the solvent heptane; in this respect the complex differs from all other CT complexes for which both gas-phase and solution data are available.
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