Phosgene-boron fluoride

Liquid perchloryl fluoride is a typical nonpolar solvent. Most inorganic and organic salts are insoluble in it. Conversely, most covalent, essentially nonpolar substances, boiling within about 50°G of perchloryl fluoride, are completely miscible, e.g., chlorine, boron trifluoride, sulfur hexafluoride, silicon tetrafluoride, phosgene, nitrous oxide, chlorine trifluoride, chlorofluorocarbons, silicon tetrachloride, sulfuryl chloride, dinitrogen tetroxide, and thionyl chloride 106). 

Chlorodifluoroamine has been prepared by reaction of difluoro-amine with boron trichloride,1 phosgene (carbonyl chloride),2 or hydrogen chloride 2 treating a mixture of sodium azide and sodium chloride with fluorine 3 reaction of chlorine trifluoride with ammonium fluoride 4 reaction of chlorine with diflu oro-amine in the presence of potassium fluoride 5 and photolysis of tetrafluorohydrazine and sulfinyl chloride (thionyl chloride).6... 

Reactions of phosgene with Group 13 halides 9.1.2.1 Reaction of phosgene with boron(in) fluoride... 

The two earliest reports of the COClj-BFj system are apparently contradictory the earlier [738a] claims that phosgene and boron(III) fluoride interact to form compounds (but does not identify these in any way), the later [1329] suggests that phosgene and boron(III) fluoride do not form a complex, even at temperatures as low as -120 C. However, a more detailed investigation [1329] resolved these anomalies. The phase diagram for the COClj-BFj system is illustrated in Fig. 9.1, and shows clear evidence for complex formation at compositions BF3.COCIJ (m.pt. -134.3 C) and BF3.2COCIJ (m.pt. -137.0 C) [1329]. 

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