Germanium disulfide

Germanium

Colorless solid

Fixed

2.94 g · cm -3

940 ° C.

Template: Infobox chemical / molecular formula search available

Germanium (IV ) sulfide is an inorganic chemical compound of the germanium from the group of sulfides. It was the first germanium compound has been found by Clemens Winkler in the analysis of argyrodite. The fact that the compound had a solubility different than other sulphides made ​​it it possible to isolate the new item.

Production and representation

Germanium (IV ) sulphide can be obtained by reaction of dissolved in hydrochloric acid or sulfuric acid, germanium ( IV) oxide with hydrogen sulfide.

It is also formed from the elements at 1100 ° C under pressure.

Properties

Germanium (IV ) sulfide is a colorless solid which is only wetted by water difficult. At about 800 ° C it melts to a dark liquid that solidifies as amber, transparent mass. In alkalies it is soluble as Thiosalz. At 800 ° C it is volatile in an inert atmosphere. The connection is stable under normal conditions as Siliciumdisulfid polymer. It occurs in several forms. So with an orthorhombic crystal structure and the space group Fdd2, but also as a monoclinic form with space group P21 / c.