Abstract
Abstract A series of new tellurium complexes of methylenetriphenylphosphorane, (C6H5)3P=CH2 (L), namely, dichlorobis(methylenetriphenylphosphorane)tellurium dichloride, [L2TeCl2]Cl2, chlorotris(methylenetriphenylphosphorane)tellurium trichloride, [L3TeCl]Cl3, and tetrakis(methylenetriphenylphosphorane)tellurium tetrachloride, [L4Te]Cl4, were examined by XPS. Binding energies of Te 3d electrons for the complexes are considerably lower than those for common Te(IV) compounds such as (C6H5)2TeCl2, TeCl4 (correctly Te4Cl16) and others, and they diminished with increasing number of L’s and decreasing number of bonded chlorine atoms, indicating that L is an electron donor. Bonded chlorine atoms and free chloride ions were clearly distinguished from the binding energy of Cl 2p3⁄2 electrons.
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