SeCl4 Selenium chloride

SeCl2 Selenium (II) chloride, 5 127 [SeCl3]+[AlCl4]- Selenium (IV) chloride, compound with aluminum chloride, 6 127 SeCl4 Selenium (IV) chloride, 5 125, 126... 

Pyrosulphuryl chloride, Sa05Cla, converts selenium into a colourless crystalline compound, SeS03CI4 or SeCl4.S03, generally known as sulphur-selenium oxytetrachloride2 (p. 82-1), which melts at 165° C. and boils at 185° C., and which can also be obtained by the combination of its constituents, selenium tetrachloride and sulphur trioxide.3... 

Sulphur Selenium Oxytetrachloride, SeSOsCl4 or SeCl4.SOa. —This can be produced by the direct combination of sulphur trioxide and selenium tetrachloride.3 It has also been obtained by heating selenium tetrachloride with chlorosulphonic acid, sulphuric acid, pyro-sulphurie acid or sulphuryl chloride,... 

Reducing agents (sulphur dioxide, solution of tin (II) chloride, iron (II) sulphate, hydroxylamine hydrochloride, hydrazine hydrochloride or hydriodic acid (KI+HCl), zinc or iron) red precipitate of selenium in hydrochloric acid solution. The precipitate frequently turns greyish-black on warming. When solutions in concentrated hydrochloric acid are boiled or evaporated, serious losses of selenium as SeCl4 occur. 

The tetra- and hexa-valent states are significantly more stable for selenium and tellurium than they are for sulfur. Thus, whereas SCI4 is exceedingly unstable, decomposing above -30 °C, SeCl4 and TeC are stable under ordinary conditions. With chloride ion acceptors, both tetrachlorides form [ChCl3]+ (Ch = Se, Te) cations ... 

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