Journal of Chemical Physics, Vol.121, No.12, 5977-5984, 2004
Infrared absorptions of the H2O center dot center dot center dot center dot H-2 complex trapped in solid neon
When a sample of neon to which have been added less than 1% each of H-2 and H2O is deposited at 4.3 K, the infrared spectrum of the resulting solid includes an absorption by the vibrational fundamental of H-2, which is normally infrared inactive. New absorptions are also associated with the vibrational fundamentals of the H2O in the sample. Similar results are obtained for deuterium-enriched samples. The new peaks are assigned to the van der Waals complex of H2O with H-2. As has been found in earlier theoretical, gas-phase, and solid-state studies of this and closely related systems, the infrared absorptions arise principally from complexes involving ortho-H-2, for which J=1.