Hypervalent tellurium compounds containing N→Te intramolecular interactions. Crystal and molecular structure of [2-(Me2NCH2)C6H4]2Te2, [2-(Me2NCH2)C6H4]TeS(S)PR2 (R=Me, Ph, OPri) and [2-(Me2NCH2)C6H4]Te–S–PPh2N–PPh2S

[2-(Me2NCH2)C6H4]TeS(S)PR2 [R=Me (2), Et (3), Ph (4), OPri (5)] were prepared by reacting [2-(Me2NCH2)C6H4]2Te2 (1) with the appropriate disulfanes, [R2P(S)S]2, while [2-(Me2NCH2)C6H4]Te–S–PPh2N–PPh2S (6) was obtained by metathesis reaction between [2-(Me2NCH2)C6H4]TeBr and potassium tetraphenyldithioimidodiphosphinate. The compounds were characterized by multinuclear NMR (1H, 13C, 31P). The crystal and molecular structures of 1, 2, 4–6 were determined by single-crystal X-ray diffraction. All compounds are monomeric and the N atom of the pendant CH2NMe2 arm is strongly coordinated to the tellurium atom. The organophosphorus ligands are monodentate, thus resulting in a T-shaped coordination geometry around tellurium.