Does that first 3 i.e. --> 3Cl3P=NSO2Cl infront of the molecular
formula indicate the polymer form? or just a mistake? should be
infront of the brackets?
Without the 3 that formula corresponds to Trichlorophosphazosulfonyl chloride.
CAS 14700-21-1 Cl3P=N-SO2Cl
A synthesis of this is detailed in
Inorganic Chemistry, Vol. 18, No.4 1979.
Obviously this is a large scale synthesis and I do not take any
responsibility whatsoever of anyone repeating this experiment. The
source is from the above reference and should be conducted by a
professional in a professional laboratory. Carbon Tetrachloride is a
known carinogen, PCl5 and sulfamoyl chloride is corrosive and toxic.
Extreme care is advised when attempting this synthesis. Perhaps
scaling down 300 times might be an ideal starting point.
To a 1-L, three-necked flask containing 200 mL of carbon tetrachloride
and equipped with an inlet tube, drying tube, and mechanical
stirrer was added 332 g (1.59 mol) of PCl5 through gooch
tubing. This was followed by 174 g (1.51 mol) of sulfamoyl chloride
added in the same manner. After stirring of the mixture for 1 h at
room temperature, the drying tube was replaced by a condenser and
the slush was refluxed for 2 h to give a clear yellow solution. After
removal of the solvent in vacuo, the residue crystallized on standing
in a refrigerator for 24 h. The solid was filtered in a drybox and
washed with 50 mL of cold n-heptane to give 250 g of product, mp
30-33 C. An additional 40 g (total yield 77%) was recovered from
the chilled filtrate.