Selenium oxydichloride

{{chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 438850594

| Name = Selenium oxydichloride

| ImageFile = Seleninyl chloride.png

| ImageFileL1 = SeOCl2pyramidal.png

| ImageNameL1 = Structure of the selenium oxydichloride molecule

| ImageFileR1 = Selenium-oxydichloride-3D-vdW.png

| ImageNameR1 = 3D model of the selenium oxydichloride molecule

| IUPACName = Selenium oxychloride

| OtherNames = Seleninyl chloride

|Section1={{Chembox Identifiers

| CASNo_Ref = {{cascite|correct|??}}

| CASNo = 7791-23-3

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 1G57T5401W

| PubChem = 24647

| RTECS = VS7000000

| EINECS = 232-244-0

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 23049

| InChI = 1/Cl2OSe/c1-4(2)3

| InChIKey = LIRMPIXWGWLNND-UHFFFAOYAX

| StdInChI_Ref = {{stdinchicite|changed|chemspider}}

| StdInChI = 1S/Cl2OSe/c1-4(2)3

| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}

| StdInChIKey = LIRMPIXWGWLNND-UHFFFAOYSA-N

| SMILES = O=[Se](Cl)Cl

}}

|Section2={{Chembox Properties

| Formula = SeOCl₂

| MolarMass = 165.87 g/mol

| Appearance = colorless liquid

| Density = 2.43 g/cm³, liquid

| Solubility =

| SolubleOther =

| MeltingPtC = 10.9

| BoilingPtC = 177.2

| Viscosity =

| RefractIndex = 1.651 (20 °C)

}}

|Section3={{Chembox Structure

| MolShape = trigonal pyramidal

| Dipole =

}}

|Section7={{Chembox Hazards

| ExternalSDS =

| MainHazards =

| GHS_ref={{cite web |title=Selenium oxychloride |url=https://pubchem.ncbi.nlm.nih.gov/compound/24647#section=Safety-and-Hazards |website=pubchem.ncbi.nlm.nih.gov |access-date=12 December 2021 |language=en}}

| GHSPictograms = {{GHS05}}{{GHS06}}{{GHS08}}{{GHS09}}

| GHSSignalWord = Warning

| HPhrases = {{H-phrases|301|314|331|373|410}}

| PPhrases = {{P-phrases|260|261|264|270|271|273|280|301+310|301+330+331|303+361+353|304+340|305+351+338|310|311|314|321|330|363|391|403+233|405|501}}

| NFPA-H = 3

| NFPA-F = 0

| NFPA-R = 1

| LDLo = 2 mg/kg (rabbit, dermal){{IDLH|7782492|Selenium compounds (as Se)}}

}}

|Section8={{Chembox Related

| OtherFunction_label = compounds

| OtherFunction = SOCl₂, POCl₃

}}

}}

Selenium oxydichloride is the inorganic compound with the formula SeOCl₂. It is a colorless liquid. With a high dielectric constant (55) and high specific conductance, it is an attractive solvent. Structurally, it is a close chemical relative of thionyl chloride SOCl₂, being a pyramidal molecule.