Bis(4-pyridyl)ditelluride as starting material for the synthesis of zwitterionic compounds and metal complexes

The properties of the derivatives of RTeTeR (R = alkyl, aryl) compounds are highly dependent of the R substituent. To show how versatile are the derivatives of RTeTeR with specific R groups – in this case we use Py* = p -(C5H4N), we studied the reactions of View the MathML sourceTe2Py2∗ with HCl, CH3I, CH3I/I2, I2/(Ph3Te)I and CoCl2·6H2O, which generate the formation of many classes of compounds: zwitterions [(HPy*)TeCl2] (1), [(MePy*)TeI2] (2), [(MePy*)TeI4] (3); a telluronium–tellurolate complex (Ph3Te)[Py*TeI4] (4) and a coordination polymer View the MathML source{[Co(Te2Py2∗)2Cl2]·(Te2Py2∗)}n (5). These compounds were characterized by single crystal X-ray diffraction, elemental analysis and infrared spectroscopy.