Crystal data on diphenyl disulphur analogues and derivatives

As part of a study of the physico-chemical properties of O, S, Se and Te-containing aromatics, twelve compounds with general formula Y–C₆H₄–X–X–C₆H₄–Y, where X = S, Se and Te and Y = H, CH₃, Br, Cl have been studied. The structures of seven of these (φ–S–S–φ, φ–Se–Se–φ, φ–Te–Te–φ, CH₃–φ–S–S–φ–CH₃, Cl–φ–Se–Se–φ–Cl, Cl–φ–Te–Te–φ–Cl, Br–φ–S–S–φ–Br) have been reported previously. The data on the other five molecules (CH₃–φ–Se–Se–φ–CH₃, Cl–φ–S–S–φ–Cl, Br–φ–Se–Se–φ–Br, Br–φ–Te–Te–φ–Br, CH₃–φ–Te–Te–φ–CH₃) are given.