The Infrared Spectrum of Sulfur Hexafluoride

Abstract

The infrared absorption spectrum of gaseous SF6 has been investigated from 2 to 25μ with prism spectrometers of high resolution. The frequencies of the infrared active fundamentals found by earlier workers have been confirmed with the exception of one, formerly found at 965 cm−1, which is shown to be at 940 cm−1. However, the remainder of the spectrum differs considerably from previous work. With the aid of the Raman data, the observed spectrum has been interpreted in detail.

High-pressure reactions of small covalent molecules. 12. Interaction of phosphorus trifluoride and sulfur hexafluoride

“…SF2(g) + PF3(g) -y8S8(s) + PF5(g) (3) y8S8(s) + PF3(g) -SPF3(g) (4) y8S8(s) + 2SF6(g) -3SF4(g) (5) The first step (eq 1) can be postulated as the linking of SF6 and PF6 to form a coordinated intermediate: should occur; however, this set of products has not been observed. Phosphorus pentafluoride has been recovered from this interaction as well as sulfur (eq 8).…”

Dalton’s and Amagat’s laws fail in gas mixtures with shock propagation

“…A germanium notch filter, mounted on the MCT detector itself, further reduces the range of incoming light to between 7.5 µm and 9.0 µm. Note the target range for these experiments was chosen between 7.5 µm and 8.5µm, based on the infrared absorption spectrum of sulfur hexafluoride [26].…”

Investigation of Dalton and Amagat’s laws for gas mixtures with shock propagation

“…This is accomplished by the use of a Germanium narrow bandpass filter mounted on the front of the sensor housing. Preliminary research [9] shows that peak absorption (~98%) of IR in sulfur hexafluoride (SF 6 ) occurs between λ = 10 µm and λ = 11 µm wavelength. However, absorption drops to ~80% in the range 7.5 µm ≤ λ ≤ 8.5 µm.…”