From Isocyanato Tellurium Pentafluoride

Isocyanato tellurium pentafluoride added methanol to form methoxycarhonylamino tellurium pentafluoride, a colorless, crystalline material.  

Methoxycarbonylamino Tdlurium Pentafluorideh 0.11 g (3.4 mmol) of methanol and 1.08 g (4.1 mmol) of isocyanato tellurium pentafluoride are condensed into a 100 w/ stainless steel cylinder. The mixture is stirred overnight at 20°, the cylinder is evacuated to constant weight, and the solid residue is sublimed at 30°/0.075 torr onto a cold finger at —30° yield 0.24 g (25%) m.p. 77°. 

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