Diethyl Telluride as a Ligand; Synthesis and Physicochemical Studies on Its Complexes with Transition Metal bis-(Chlorosulfates), M(SO₃Cl)₂ [M = Cr, Mn, Fe, Co, Ni, Cu]

Abstract

Reaction of diethyl telluride, Et₂Te with transition metal bis(chlorosulfates), M(SO₃Cl)₂ (M = Cr^II, Mn^II, Fe^II, Co^II, Ni^II and Cu^II) in MeCN results in the isolation of compounds of the type [M(SO₃Cl)₂(Et₂Te)₂]. The compounds are hygroscopic but are stable under N₂. In the IR spectrum the positive shift in sym. SO₃ str. Vl(A), and splitting of the doubly degenerate (E) modes indicate the cova-lent mode of linkage of the SO₃Cl⁻ moiety. The compounds are non electrolytes in CH₃CN. The magnetic moments and the band positions in the electronic spectra suggest an octahedral geometry around metal such that each SO₃Cl⁻group is bonded in a bidentate manner except for Nicomplex where a tetragonal distortion has been observed. The Ni^II complex appears to be tetragonally distorted.