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Sulfanuric halides

Sulfanuric halides contain the characteristic group -N=S(0)X- (X = Cl, F). Unlike the isoelectronic cyclophosphazenes (NPClajx (x = 3-17), " only six-membered rings have been well characterized. The sulfanuric halides are colourless solids (X = Cl) or liquids (X = F), which are stable in dry air. Sulfanuric chloride [NS(0)C1]3 is best prepared by treatment of SOCI2 with sodium azide in acetonitrile at -35°C (Eq. 8.16). It may also be obtained as a mixture of a- and yS-isomers in a two-stage reaction from H2NSO3H and PCls. The fluoride [NS(0)F]3 is formed as a mixture of isomers by the fluorination of [NS(0)C1]3 with Sbp3. ... [Pg.153]

Two isomers are known for each of the sulfanuric halides. The six-membered ring in the isomer a-[NS(0)Cl]3 adopts a chair conformation with equal S-N... [Pg.308]

The hydrohalide elimination route is also widely employed for the synthesis of cyclic sulfur-nitrogen compounds, such as tetrasulfur tetranitride (cyclotetrathiazyl), thiazyl halides, and sulfanuric halides ... [Pg.36]

H. G. Heal, The Inorgantc Heterocydtc Chemistry of Sulfur, Nitrogen and Phosphorus, Academic Press, London, 1980. This book has chapters on the cyclic oligomers formed by thiazyl halides, NSX sulfanuric halides, [NS(0)X] and thionyl imide, HNSO. [Pg.278]


See other pages where Sulfanuric halides is mentioned: [Pg.9]    [Pg.140]    [Pg.153]    [Pg.286]    [Pg.241]    [Pg.270]    [Pg.308]    [Pg.269]    [Pg.270]    [Pg.241]    [Pg.270]   
See also in sourсe #XX -- [ Pg.241 ]

See also in sourсe #XX -- [ Pg.241 ]




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