FTIR SPECTRA OF MATRIX-ISOLATED COMPLEXES BETWEEN SULFUR-COMPOUNDS

The matrix isolation technique has been coupled with Fourier transform infrared spectroscopy to isolate and to characterize the complex between methanethiol and dimethyl sulfide as well as the complexes between sulfur dioxide and a series of dialkyl sulfides including (CH3)2S, (C2H5)2S and CH3SC2H5. The 1:1 CH3SH-S(CH3)2 complex was isolated and characterized by the i.r. frequency shifts of the sub-molecule methanethiol. In each of the SO2/sulfide systems, evidence was obtained for the formation of a 1:1 complex through the disulfide interaction. Vibrational assignments were also suggested for the 1:2, sulfide-(SO2)2, complexes.