Trithiazyl trichloride is the

inorganic compound In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemist ...

with the formula . A white solid, it is a precursor to other

sulfur nitride Sulfur nitride may refer to a number of sulfur nitrogen compounds: * pentasulfur hexanitride, * tetrasulfur tetranitride, * tetrasulfur dinitride, * disulfur dinitride, * polythiazyl, * thiatetrazole, Additionally, some unstable species are k ...

s, but has no commercial applications.

Structure

The molecule is a 6-membered ring of alternating nitrogen and sulfur atoms, where each sulfur atom is attached to one chlorine atom by a single bond. The molecule contains alternating single and double bonds in the core. The molecule has C_3v

symmetry Symmetry (from grc, συμμετρία "agreement in dimensions, due proportion, arrangement") in everyday language refers to a sense of harmonious and beautiful proportion and balance. In mathematics, "symmetry" has a more precise definit ...

. The core is slightly ruffled structure with S-N distances of 160.5 pm. The S-Cl distances are 208 pm, and the chlorine atoms are mutually ''cis''. The S centers are tetravalent and pyramidal. In contrast to the NSCl connectivity,

nitrosyl chloride Nitrosyl chloride is the chemical compound with the formula NOCl. It is a yellow gas that is commonly encountered as a component of aqua regia, a mixture of 3 parts concentrated hydrochloric acid and 1 part of concentrated nitric acid. It is a st ...

has the connectivity ONCl.

Synthesis and reactions

Trithiazyl trichloride is obtained by chlorination of

tetrasulfur tetranitride Tetrasulfur tetranitride is an inorganic compound with the formula . This gold-poppy coloured solid is the most important binary sulfur nitride, which are compounds that contain only the elements sulfur and nitrogen. It is a precursor to many S-N ...

: : At 100 °C in vacuum, thiazyl chloride trimer undergoes cracking to thiazyl chloride monomer, which is a green gas. : In N≡S−Cl, chlorine is bonded to sulfur, in contrast to

O=N–Cl, where chlorine is bonded to nitrogen. In contrast, with six fewer electrons,

cyanuric chloride Cyanuric chloride is an organic compound with the formula (NCCl)3. This white solid is the chlorinated derivative of 1,3,5-triazine. It is the trimer of cyanogen chloride. Cyanuric chloride is the main precursor to the popular but controver ...

is a planar ring. It reacts with

nitriles In organic chemistry, a nitrile is any organic compound that has a functional group. The prefix ''cyano-'' is used interchangeably with the term ''nitrile'' in industrial literature. Nitriles are found in many useful compounds, including met ...

to dithiadiazolium chlorides: : The compound oxidizes to the S(VI) compound {{chem2, (NSOCl)3, which exists as isomers.

References

Inorganic chlorine compounds Sulfur(IV) compounds Nitrides Sulfur–nitrogen compounds Six-membered rings