Interaction of SiCl2 with CO2 in Ar matrices

A 1: 1 photostable complex between dichlorosilylene and CO2 was detected using matrix-isolation FTIR spectroscopy. The photostability can be attributed to the existence of photochemical equilibria between this complex and products of its isomerization, first of all, a complex of dichlorosilanone with CO, which are strongly shifted to the complex. A detailed computational study of the potential energy surface of the SiCl2 + CO2 system was carried out.