Landau, R.; Rosen, R.
Industrial and Engineering Chemistry, 1947 , vol. 39, p. 281 - 286
Full Text Show Details
Gmelin Handbook: F: SVol.1, 18, page 99 - 101
Sawton, E. A.; Weber, J. Q.
Journal of the American Chemical Society, 1959 , vol. 81, p. 4755
Full Text View citing articles Show Details
Gmelin Handbook: C: MVol.D1, 45.8.3.2, page 416 - 416
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
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
