Abstract
In Ar/CO 2/H 2SO 4 layers deposited at 15–18 K, infrared bands originating in the (CO 2)·(H 2SO 4) and (CO 2)·(SO 3) complexes were identified. The complexes were found to be produced predominantly during the matrix deposition process. Ab initio calculations on these complexes are presented and compared with the experimental results. The (CO 2)·(H 2SO 4) complex is formed by an end-on OCO⋯HO interaction. The (CO 2)·(SO 3) interaction occurs mainly via an interaction between the O atom of CO 2 and the S atom of SO 3 and a secondary interaction between the C atom of CO 2 and the most adjacent O atom of SO 3.
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