Synthesis, structures and ab initio studies of selenium and tellurium bis(carbodithioates and carbothioates)†
Abstract
A series of selenium and tellurium bis(carbodithioates and carbothioates) were synthesized. X-Ray structure analysis revealed that Se(SSCC6H4OMe-2)2, Te(SSCC6H4OMe-2)2 and Te(SSCC6H4Me-4)2 have trapezoidal-planar configuration of ES4 (E = Se, Te) and despite the larger atomic radii, the CS⋯Te distances in Te(SSCC6H4OMe-2)2 are comparable to those in the corresponding selenium derivatives Se(SSCC6H4OMe-2)2. Molecular-orbital calculations performed on compounds E(E′SCR)2 (E = S, Se, Te; E′ = O, S; R = Me, Ph, C6H4OMe-2) showed that the syn-conformers of Se(SSCR)2 and Te(SSCR)2 are more stable than the corresponding anti-ones, while, in the case of
- This article is part of the themed collection: Selenium & Tellurium chemistry at the beginning of the 3rd millennium: a celebration of ICCST