From Dichloromethyleneamino Tellurium Pentafluoride

Dichloromethyleneamino tellurium pentafluoride was converted by excess hydrogen fluoride to trifluoromethylamino tellurium pentafluoride, by heating with cesium fluoride to cesium pentafluorotelluro(trifluoromethyl)amide, and by heating with mercury (II) fluoride to mercury bis pentqfluorotelluro trifluoromethylamide] .  

Trifluoromethylamino Tellurium Pentafluoride Into an autoclave at — 196° containing 3.8 g (11.9 mmol) dichloromethylenamino tellurium pentafluoride are condensed 3.9 g (195 mmol) of anhydrous hydrogen fluoride. The reaction mixture is warmed to 20° and then kept at 40-50° overnight. The volatile products are placed over a sodium fluoride scrubber for 1 -2 h. Repeated trap-to-trap distillation deposited trifluoromethylamino tellurium pentafluoride in the — 78° trap yield 3.3 g (90%). 

Mercury Bis[pentafluorotelIuro trifluoromethylamide] 14.2 g (44.6 mmol) of dichloromethyleneamino tellurium pentafluoride are condensed into a 100 m/ stainless steel autoclave containing 48.0 g (201 mmol) of mercury (II) fluoride. The mixture is stirred and heated at 60° for 4 days. The autoclave is chilled to — 25° and any volatile materials removed at this temperature under vacuum. The remaining solid is sublimed at 60° onto a cold-finger at — 25° yield 17.8 g (98%) m.p. 67-68°. 

In this mercury salt the N-Hg-N group is linear and the three groups around each nitrogen atom and the nitrogen atom lie in a planed 

The chlorine atoms in dichloromethyleneamino tellurium pentafluoride were replaced by methoxide, when the tellurium compound and sodium methoxide in diethyl ether were kept at 20° for four days. The products were dimethoxymethyleneamino and chloro(methoxy) methyleneamino tellurium pentafluoride. 

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