Tetrasulfur tetranitride

Tetrasulfur tetranitride
Names
	IUPAC name Tetrasulfur tetranitride
	Systematic IUPAC name 1,3,5,7-tetrathia-2,4,6,8-tetraazacyclooctan-2,4,6,8-tetrayl
	Other names Cyclic sulfur(III) nitride tetramer; Tetranitrogen tetrasulfide; 1λ4,3,5λ4,7,2,4,6,8-Tetrathiatetrazocine;
Identifiers
CAS Number	28950-34-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	124788 ;
PubChem CID	141455;
UNII	9BXS997HR6 ;
CompTox Dashboard (EPA)	DTXSID20183147 ;
	InChI InChI=1S/N4S4/c1-5-2-7-4-8-3-6-1 Key: LTPQFVPQTZSJGS-UHFFFAOYSA-N ;
	SMILES N1=[S]N=[S]N=[S]N=[S]1;
Properties
Chemical formula	S4N4
Molar mass	184.287 g/mol
Appearance	Vivid orange, opaque crystals
Melting point	187 °C (369 °F; 460 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Tetrasulfur tetranitride is an inorganic compound with the formula S₄N₄. This vivid orange, opaque, crystalline explosive 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 compounds and has attracted wide interest for its unusual structure and bonding.

Nitrogen and sulfur have similar electronegativities. When the properties of atoms are so highly similar, they often form extensive families of covalently bonded structures and compounds. Indeed, a large number of S-N and S-NH compounds are known with S₄N₄ as their parent.