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Study on Picoline Complexes of p-Hydroxyphenyltellurium (IV) Trihalides

K. K. Verma and Seema

Eighteen new complexes of p-hydroxphenyltellurium trihalides, p-HOC6H4TeX3 (X = Cl, Br, I) with -, - and - picolines, RTeX3 . Pic and RTeX3.. 2 Pic, have been synthesized and characterized by elemental analyses, conductance, cryoscopy, infrared and proton magnetic resonance studies. Conductance measurements in nitrobenzene, acetone and acetonitrile predict their non-electrolyte to 1 : 1 electrolyte type behaviour in solution, which is well supported by cryoscopic studies in nitrobenzene. Spectral studies indicate the linkage of picoline molecules to the tellurium atom of hydroxyphenyltellurium group through the nitrogen atom. Square-pyramidal and octahedral structures have been suggested for RTeX3. Pic and RTeX3 . 2Pic, respectively.