Infrared spectrum, potential constants, and structure of thio-thionyl fluoride

Abstract

An investigation of the infrared spectrum of gaseous thio-thionyl fluoride (SSF₂) results in the following assignment of fundamentals: A': v1 760.5±0.2cm^-1, v2 718.5±0.2 cm^-1, v3 411.2±0.4cm^-1, v4 364.1±0.3 cm^-1. A": v5 692.3±0.8cm^-1, v6 337.6±0.4 cm^-1. A normal coordinate vibrational analysis has been performed and a set of ten force constants evaluated. Some conclusions are given regarding the electronic structure of SSF₂. Thermodynamic functions based on the usual assumptions have been calculated for SSF₂. A set of potential constants has been evaluated for disulphur monoxide, SSO, using the available infrared data.