Experimental and theoretical studies of the fundamental bands of sulfur dioxide

Abstract

The infrared‐active vibration‐rotation fundamentals of ³²S¹⁶O₂ have been measured with moderately high spectral resolution. Quantum number assignments have been made for spectral lines by comparison with theoretically computed line positions and intensities, which include the effects of centrifugal distortion. The following values for the band centers have been determined: ${\nu }_1\text{° = 1151.65 ± 0.10\hspace{0.17em}}{\mathrm{cm}}^{\text{−1}}{\mathrm{,\; \nu }}_2\text{°=517.75± 0.10\hspace{0.17em}}{\mathrm{cm}}^{\text{−1}}$ , and ${\nu }_3\text{°=1362.00± 0.10\hspace{0.17em}}{\mathrm{cm}}^{\text{−1}}$ .