Synthesis and spectroscopic characterization of six new monosubstituted dithiocarbamate compounds containing organotellurium(IV) heterocycles: Single-crystal structures of C5H10TeI[S2CN(CH2CH3)2], C4H8TeI[S2CN(CH2CH2)2], C4H8OTeI[S2CN(CH2CH2)2] and C5H10T

Six novel monosubstituted dithiocarbamate compounds containing organotellurium(IV) heterocycles, C4H8OTeI[S2CN(CH2CH3)2] (1), C5H10TeI[S2CN(CH2CH3)2] (2), C4H8TeI[S2CN(CH2CH2)2] (3), C8H8TeI[S2CN(CH2CH2)2] (4), C4H8OTeI[S2CN(CH2CH2)2] (5) and C5H10TeI[S2CN(CH2CH2)2] (6) were synthesized. The compounds were characterized by common spectroscopic methods; IR, EI-MS and multinuclear NMR (1H, 13C and 125Te). The structure of compounds 2, 3, 5 and 6 was uniequivocally established by single-crystal X-ray diffraction studies. Compounds 3, 4 and 5 exhibit dimeric arrangements achieved through secondary bonding (Te···S) and in the case of 2, an additional Te···S interaction resulted in the formation of a self-assembled chain. Furthermore, the geometrical arrangement displayed in the tellurium atoms of all the compounds corresponds to a distorted octahedron while the coordination mode for the dithiocarbamate ligands is considered anisobidentate in all cases.

Graphical abstractSix new monosubstituted organotellurium(IV) with dithiocarbamates have been synthesized and characterized. The molecular structures of four compounds were determined by X-ray analyses. All compounds are dimeric associations connected through Te···S secondary bonds; however 2 show an additional secondary bond resulting in the formation of a self-assembled chain.Figure optionsDownload full-size imageDownload as PowerPoint slide