Synthesis and structural characterization of the novel T-shaped organotellurium(II) dihalides (PyH)[mesTeClBr] and (PyH)[mesTeX(2)] (Py = pyridine; mes = mesityl; X = Cl, Br)

摘要

(MesTe)(2) and bromine or chlorine react with pyridinium bromide and pyridinium chloride to give (PyH)[mesTeBr(2)] (1), (PyH)[mesTeClBr] (2) and (PyH)[mesTeCl(2)] (3), respectively. The Tell atoms in 1, 2 and 3 adopt a three-coordinate, T-shaped configuration and the trans tellurium-halogen bonds present different distances, since the X(1)-halogens {Br (1), Cl (2, 3)} attain hydrogen bondings toward the N-H group of the pyridinium cations. The title compounds do not reproduce the dimeric assembling of some newly reported parent tellurium dihalides.