depending upon the exact structure of the complex; this must be compared to values of -36.0 → -46.3 kJ mol -1 for acetamide-water complexes -these latter agree with PBE+GD3/aug-cc-pVTZ results by Krestyaninov et al. Whilst not directly comparable to the interactions between molecules and grains of water-ice in the interstellar medium it does suggest that 2-oxiranamine is somewhat more likely to 'fly freely'.