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Table 5

Computed and experimental adsorption energies (meV) of CH3CN and CH3NC on α-quartz (0001) and H2O surfaces.

CH3CN CH3NC
Surface Computed Experimental Computed Experimental

α-quartz (0001) 460 460 ± 30 414 430 ± 25
Apolar crystalline ice Ih 558 565 ± 25 * 545 540 ± 15 *
Compact amorphous ice 530 ± 15 * 490 ± 10 *

Notes. Experimental values denoted with * should be considered with caution since the sublimation of the supporting water ice layer plays an important role in the observed desorption features.

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