Studies on Primary Dithizonates of Some Aryltellurium (Iv) Halides

K. K. Verma, Seema and Shashi Chhabra

Department of Chemistry, Maharshi Dayanand University, Rohtak (India)

Twelve primary dithizonates with the formula RTeX2.HDz have been prepared by the reactions of dithizone (H2Dz) with aryltellurium(iv) trihalides, RTeX3 (R = phenyl, p-anisyl, p-hydroxyphenyl and 3-methyl-4-hydroxyphenyl; X = Cl, Br, I). The complexes have been subjected to elemental analyses, conductance measurements, molecular weight determination, infrared and proton nuclear magnetic reasonance spectral studies. Solution studies reveal their weak to 1 : 1 electrolyte type behaviour. Spectral studies indicate the linkage of tellurium through S and N atom of azo group of the ligand, thus giving a pentacoordinated tellurium atom in these primary dithizonates.

Aryltellurium(IV) trihalides; dithizone; primary dithizonates