What is Selenium monochloride?
{{no sources|date=July 2022}} {{chembox | verifiedrevid = 444677336 | Name = Selenium monochloride | ImageFile = Se2Cl2Structure.png | ImageSize = | ImageName = | IUPACName = Selenium monochloride | OtherNames = Dichlorodiselenide, Diselenium dichloride, Selenium chloride, 1,2-dichlorodiselane | Section1 = {{Chembox Identifiers | CASNo_Ref = {{cascite|correct|??}} | CASNo = 10025-68-0 | RTECS = | PubChem = }} | Section2 = {{Chembox Properties | Formula = Se<sub>2</sub>Cl<sub>2</sub> | MolarMass = 228.83 g/mol | Appearance = Reddish-brown oily liquid | Density = 2.7741 g/cm<sup>3</sup> | Solubility = insoluble; sol in CHCl<sub>3</sub>, CS<sub>2</sub>, MeCN | SolubleOther = Soluble in dry chloroform and carbon disulfide | MeltingPt = -85 °C (223.15 K) | BoilingPt = 127 °C at 0.997 atm (400.15 K at 0.997 atm) }} | Section3 = {{Chembox Structure | CrystalStruct = | SpaceGroup = | MolShape = }} | Section7 = {{Chembox Hazards | NFPA-H = | NFPA-F = | NFPA-R = | EUClass = | RPhrases = 23/24/25-34 | SPhrases = 22-26-36/37/39-45 | FlashPt = }} | Section8 = {{Chembox Related | OtherAnions = | OtherCations = }} }} '''Selenium monochloride''', also known as '''selenium(I) chloride''' or '''diselenium dichloride''', is a [[chemical compound]]. Its chemical formula is Se<sub>2</sub>Cl<sub>2</sub>. It contains [[selenium]] in its +1 [[oxidation state]]. It also contains [[chloride]] [[ion]]s. ==Properties== It is a reddish brown oily liquid. ==Preparation== It can be made by reacting selenium, [[selenium dioxide]], and [[hydrochloric acid]]. It can be made though by just reacting [[chlorine]] with selenium. Another way to make it is reacting [[oleum]] and [[hydrochloric acid]] with selenium. ==Uses== It can be used to add selenium to other chemical compounds. ==Related pages== *[[Selenium(IV) chloride]] [[Category:Selenium compounds]] [[Category:Chlorine compounds]] {{chem-stub}}