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Spectra recorded for water aprotic solvent solutions in which the mole fraction of water is less than 1 per cent have enabled the resolution of the v 1 + v 2 + v 3 combination band of water into three Gaussian components. One band is due to the situation in which the two water protons are bonded to an acceptor with approximately equal hydrogen-bond energies. The other two bands are due to the situation in which the protons are bonded with unequal bond strengths. The positions of all three bands are dependent on the “basicity” of the hydrogen-bond acceptor. These data have led to a reinterpretation of spectral data for aqueous solutions. Pure water appears to exist as a liquid in which there are many distorted hydrogen-bonds of varying strengths but few broken bonds. The addition of an electrolyte appears to increase the number of symmetrically bonded water molecules possibly due to ion-dipole interactions.

The Raman spectra of liquid and solid methyltriiodogermane [CH 3 GeI 3 ] and perdeuteromethyltriiodogermane [CD 3 GeI 3 ] have been recorded. The infrared spectra of the liquids were recorded from 33–4000 cm −1 . The spectra have been interpreted in detail and all twelve normal vibrations have been assigned for these molecules of C 3 v symmetry. The interesting torsional mode was observed at 123 cm −1 for the “light” molecule. The threefold barrier restricting rotation was calculated to be 1.1 kcal/mole. The assignments are tabulated and discussed in detail. The valence force field model has been utilized in calculating the frequencies and potential energy distribution for the molecules, and the results support the assignment presented. The force constants obtained in this study are consistent with those previously reported for other halo- and organogermanium compounds.