Thiazyl fluoride, NSF

Thiazyl fluoride, NSF, is a colourless, reactive, pungent gas (mp —89°, bp -)-0.4°). It is best prepared by the action of HgF2 on a slurry of S4N4 and CCI4 but it can also be made by a variety of other reactions ... 

Nitrogen trifluoride passed into molten sulfur at 350 to 400°C reacts to give thiothionyl fluoride, SSF2, and thiazyl fluoride, NSF, as main products and smaller amounts of SF4, SFe, and SO2F2. The composition of the product mixture depends on the depth of the molten sulfur layer and the contact time of the NF3. Below 350°C, small amounts of N3S3F3 are formed [1]. The combustion of sulfur with nitrogen fluoride in a nickel bomb proceeds according to the... 

Glemser, O. and Mews, R., "Chemistry of Thiazyl Fluoride (NSF) and Thiazyl Trifluoride (NSF3) A Quarter of a Century of Sulfiir-Nitrogen-Fluorine Chemistry, Angew. Chem., Int Ed. Engl 1980, 7P, 883. 

Monomeric thiazyl halides NSX (X = F, Cl Br) have been characterized in the gas phase, but oligomerization to cyclic species, e.g., (NSX)3 (X = F, Cl) and (NSF)4, occurs in the condensed phase (Section 8.7). These ligands can be stabilized, however, by coordination to a transition metal. The NSF complexes are conveniently prepared in SO2 (Eq. 1.6) The monomeric fluoride NSF is conveniently generated in situ by thermal decomposition of FC(0)NSF2 or Hg(NSp2)2 (Section 8.2). 

Thiazyl fluoride is a moisture-sensitive, thermally unstable gas.88 It is conveniently generated by decomposition FC(0)NSF2 or Hg(NSF2)2- It forms the cyclic trimer (NSF)3 at room temperature. 

Thiazyl fluoride is a moistme-sensitive, thermally unstable gas. It is conveniently generated by decomposition of FC(0)NSP2 or Hg(NSF2)2- It may also be obtained from [NSJjAsFe] andCsF orfrom(NSCl)3 andKF intetramethylene sulfone at 80 °C. The microwave spectrum of NSF indicates a bent structure. Thiazyl fluoride can be stabilized by coordination to a transition metal and such complexes, for example, [M(NSF)6] [AsFe] (M = Co, Ni), are conveniently prepared in liquid SO2. ... 

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