Trirhenium nonachloride

• Rheniumtrichlorid
• Trirhenium (III) nonachlorid

Dark red solid

Fixed

500 ° C

Attention

280 mg · kg -1 ( LD50, mouse, ip)

Template: Infobox chemical / molecular formula search available

Rhenium ( III) chloride is an inorganic chemical compound of the rhenium from the group of chlorides. It was discovered in 1932 by Wilhelm Biltz, Wilhelm Geilmann and Friedrich Wilhelm Wrigge.

Production and representation

Rhenium ( III) chloride can be obtained by thermal decomposition of rhenium ( V) chloride.

It may also (V) chloride is prepared by tin ( II) chloride at 250 ° C by reacting rhenium. It is produced in high yield by the reaction of Re2 ( CH3CO2 ) 4Cl2 with dry hydrogen chloride at 340 ° C.

Properties

Rhenium (III ) chloride is a dark purple red paramagnetic solid. At normal humid air some time resistant, water (initially red solution ) and bases, hydrolysis ensues. It is without decomposing soluble in acetone, methanol and ethanol, acetic acid, dimethyl sulfone and sulfolane ( Tetrahydrothiophensulfon ). In hydrochloric acid is soluble to form Re3ClI2 and similar forms. It reacts with oxygen at 400 ° C to Rheniumoxidchloriden is reduced by hydrogen at 250-300 ° C and decomposes to the metal at temperatures above 360 ° C in rhenium and chlorine. The green steam contains predominantly Re3Cl9 molecules. In the solid state, it has a hexagonal crystal structure having the space group R 3 m (a = 1,033 pm, c = 2036 pm ) with Re3Cl9 assemblies, which are linked by two chlorine bonds with three other Re3Cl9 groups.