X-ray diffraction study of liquid sulfur

Abstract

The X-ray scattering intensity of liquid sulfur was measured at 130, 155, 180, 210, 240, 270 and 300°C by a reflection method from a free liquid surface. This was carried out using a special inner diffraction chamber as a sample holder. As a result of a radial distribution analysis, the radial functions were obtained and atomic distances and coordination numbers for the first two coordination shells were determined. The results can be explained by proposing that the molecular structure of liquid sulfur is composed of S8-rings.

Liquid–liquid transition and critical point in sulfur

“…1). The LDL PDF at point A (0.11 GPa, 428 K) is very similar to those reported for the ambient-pressure molecular liquid below the lambda transition 28,29 .…”

Applications of in situ synchrotron XRD in hydrometallurgy: Literature review and investigation of chalcopyrite dissolution

“…There is evidence that the S 8 -rings that characterize the crystalline state and presumably also the liquid state below about 160°C break down and begin to form long chains. This transition of sulfur from eight-atom rings to chains between 160 and 170°C is accompanied by modifications in physicochemical properties such as viscosity, thermal expansion, and specific heat, as better discussed in the original publications (Gingrich, 1940;Prins and Poulis, 1949;Schenk, 1957;Vahvaselka and Mangs, 1988;Winter et al, 1990).…”

Distribution of Sulfur in Carbon/Sulfur Nanocomposites Analyzed by Small-Angle X-ray Scattering

“…Both terms take into account the scattering that originates from amorphous sulfur that leads to a scattering contribution akin to the scattering contribution of a liquid. 28 Determination of these terms then leads to the contribution of the pores dΣ pores /dΩ(q). At sufficiently high q, the Porod parameter normalized to the filling density is obtained.…”