Phenyl complex with ethylenethiourea

A similar exchange reaction produced the 1 1 complexes of phenyl tellurium thiocyanate with ethylenethiourea when the phenyl tellurium chloride complex was treated with potassium thiocyanate in aqueous methanol. However, the phenyl tellurium chloride -selenourea adduct and potassium selenocyanate yielded bis[phenyltelluro] selenium. Phosphane selenides also coordinate to phenyl tellurium halides. ... 

Phenyl, 4-methoxyphenyl, and 4-ethoxyphenyl tellurium thiocyanates are known only in the form of their complexes with thiourea ethylenethiourea, triphenylarsine oxide, 3-methylpyridine, 3-methylpyridine A -oxide, or 4-methylpyridine A -oxide. These compounds were prepared from the diaryl ditellurium compounds, thiocyanogen, and the ligands. ... 

When diphenyl ditellurium, ethylenethiourea, and potassium thiocyanate were treated with chlorine in aqueous methanol, the monothiourea complex of phenyl tellurium thiocyanate was isolated3. 

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