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The method of molecular dynamics is used to investigate the stability and physical properties of (CH 4 ) i (H 2 O) n clusters. The possibility of methane molecules being absorbed by clusters containing ten and twenty water molecules is demonstrated. Such clusters retain the thermodynamic stability when the number of CH 4 molecules they absorbed does not exceed six. The frequency dispersion of complex permittivity of (CH 4 ) i (H 2 O) n aggregates reflects the resonant behavior of polarizability depending on the applied electric field. The dependence of the absorption coefficient α on the frequency of infrared radiation varies significantly after even one CH 4 molecule is absorbed by water clusters. The maximal value of α for water aggregates which absorbed CH 4 molecules is much lower than the respective value for pure water clusters of appropriate size.

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