in water
byproducts: CO2, (NH2)2CO; fluorine gas, diluted with N2, was passed through an aq. urea soln. at 0°C, until the halogen was no longer absorbed; resulting soln. of 1,1-difluorurea allowed to stand at ambient temp.; HNF2 and CO2 are formed in the gas phase;
参考文献
Colbourne, D.; Frost, D. C.; McDowell, C. A.; Westwood, N. P. C.
Chemical Physics Letters, 1980 , vol. 72, p. 247 - 251
Fraser, G. W.; Shreeve, J. M.
Journal of the Chemical Society [Section] D: Chemical Communications, 1966 , p. 532
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Gmelin Handbook: C: MVol.D3, 3.3, page 125 - 126
Cauble, R. L.; Cady, G. H.
Inorganic Chemistry, 1967 , vol. 6, p. 2117
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Gmelin Handbook: C: MVol.D3, 4.5.3, page 135 - 136
in water
Ar/F2 gas mixt. (2:1) sparged through an aq. soln. of urea; the difluorourea soln. is then acidified (concd. H2SO4) and heated (ca. 50°C) to liberate HNF2 and CO2; gaseous products condensed in 2 cold traps at -78 and -142°C resp.; bulk of the CO2 removed from the HNF2/CO2 mixt. in the -142°C trap by warming to -131°C and evacuating;
参考文献
Lascola, Robert; Withnall, Robert; Andrews, Lester
Journal of Physical Chemistry, 1988 , vol. 92, # 8 p. 2145 - 2149
