Hydrogen telluride

Most compounds with Te-H bonds are unstable with respect to loss of H₂, and H₂Te follows this pattern. H₂Te is chemically similar to hydrogen selenide, both are reactive, acidic species with H-X-H angles approaching 90°.

H₂Te is prepared by the acidification of salts of Te²⁻, such as Al₂Te₃ and Na₂Te. Na₂Te can be generated by the reaction of Na and Te in anhydrous ammonia.

The strong, unpleasant odour of H₂Te was remarked upon in a scene in the Doctor Who serial The Krotons (1968/9), when it was described as “the worst smell in the world”.

• Dimethyltelluride

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