Disulfur dinitride

Colorless solid with iodartigem odor

Fixed

2.2 g · cm -3

Insoluble in water

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Dischwefeldinitrid is an inorganic chemical compound of the sulfur from the group consisting of the nitrides.

Production and representation

Dischwefeldinitrid, by reaction of tetrasulfur with silver ( arising silver sulfide acts as a catalyst in the decomposition of tetrasulfur to Dischwefeldinitrid ) are obtained, the thermal cleavage of tetrasulfur.

Properties

Dischwefeldinitrid is a colorless crystalline volatile solid with disgusting smell iodartigem. It is stable only at low temperatures and turns already at 20 ° C after a short time dark. Upon impact, or temperatures above 30 ° C, it is explosive decomposition. It sublimes at 10-2 Torr at room temperature and is easy to (SN ) x polymerizable. In the presence of traces of humidity about 67% to polymerize (SN) x, while 33 % to dimerize tetrasulfur. It is soluble in alcohols with yellowish red color, and dissolves easily without staining in benzene, ether, carbon tetrachloride, acetone, tetrahydrofuran and 1,4- dioxane. Traces of alkali metals solve a current and exclusive dimerization. Water does not wet Dischwefeldinitrid why this is not soluble in water.

Dischwefeldinitrid is the smallest so far isolated binary S- N- ring system. The planar -built, nearly square molecule with D2h molecule structure to formally 6 π - electrons and belongs to the pseudo -aromatic compounds.

Solid Dischwefeldinitrid has a monoclinic crystal structure with space group P21 / c.