The band structure and spectral parameters (peak frequency, bandwidth)
of the stretching mode of CO deposited at 5 K upon various ice layers
are indicative of CO...H2O complexations and thereby of the nature of
the ice surface. It is shown that for the former, a strained surface
is sufficient and the ice does not have to possess uncoupled OH bonds.
The order of crystallinity found is: pure ice deposited on CsI window
> pure water deposited on argon and neon layers > neon/H2O solid mixt
ure after neon release > argon/H2O solid mixture after argon release.
(C) 1997 Elsevier Science B.V.