| 词条 | Thiocyanic acid |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 470607041 | Reference = [1] | ImageFileL1 = Thiocyanic acid.png | ImageFileL1_Ref = {{chemboximage|correct|??}} | ImageNameL1 = Skeletal formula of thiocyanic acid | ImageFileR1 = Thiocyansäure.png | ImageFileR1_Ref = {{chemboximage|correct|??}} | ImageNameR1 = Skeletal formula of thiocyanic acid with the explicit hydrogen added | ImageFile2 = Thiocyanic-acid-3D-vdW.png | ImageFile2_Ref = {{chemboximage|correct|??}} | ImageSize2 = 100 | ImageName2 = Spacefill model of thiocyanic acid | IUPACName = Nitridosulfanidocarbon[2] | OtherNames = {{Unbulleted list|Hydrogen thiocyanate{{Citation needed|date=June 2012}}|Sulfocyanic acid[3]|Sulfocyanide{{Citation needed|date=June 2012}} }} |Section1={{Chembox Identifiers | CASNo = 463-56-9 | CASNo_Ref = {{cascite|correct|CAS}} | PubChem = 781 | ChemSpiderID = 760 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | EINECS = 207-337-4 | KEGG_Ref = {{keggcite|changed|kegg}} | KEGG = C01755 | MeSHName = thiocyanic+acid | ChEBI = 29200 | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEMBL = 84336 | ChEMBL_Ref = {{ebicite|correct|EBI}} | Gmelin = 25178 | 3DMet = B00344 | SMILES = SC#N | StdInChI = 1S/CHNS/c2-1-3/h3H | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = ZMZDMBWJUHKJPS-UHFFFAOYSA-N | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} }} |Section2={{Chembox Properties | C=1 | H=1 | N=1 | S=1 | Appearance = colorless, oily liquid | Odor = pungent | Solubility = Miscible | SolubleOther = soluble in ethanol, diethyl ether | LogP = 0.429 | pKa = 0.926 | pKb = 13.071 | Density = 2.04 g/cm3 | MeltingPtC = 5 }} |Section3={{Chembox Hazards | EUClass = {{Hazchem Xn}} | RPhrases = {{R20/21/22}}, {{R32}}, {{R52/53}} | SPhrases = {{S2}}, {{S13}} }} |Section4={{Chembox Related | OtherFunction_label = alkanenitriles | OtherFunction = {{Unbulleted list|Hydrogen cyanide|Cyanogen iodide|Cyanogen bromide|Cyanogen chloride|Cyanogen fluoride|Acetonitrile|Aminoacetonitrile|Glycolonitrile|Cyanogen}} }} }}Thiocyanic acid is a chemical compound with the formula HSCN which exists as a tautomer with isothiocyanic acid (HNCS).[4] The iso- form tends to dominate with the material being about 95% isothiocyanic acid in the vapor phase.[5] It is a weak acid, bordering on strong, with a pKa of 1.1 at 20 °C and extrapolated to zero ionic strength.[6] HSCN is predicted to have a triple bond between carbon and nitrogen. It has been observed spectroscopically but has not been isolated as a pure substance.[7] The salts and esters of thiocyanic acid are known as thiocyanates. The salts are composed of the thiocyanate ion (−SCN) and a suitable metal cation (e.g., potassium thiocyanate, KSCN). The esters of thiocyanic acid have the general structure R–SCN. References1. ^Merck Index, 11th Edition, 9257. {{Molecules detected in outer space}}{{hydrogen compounds}}{{sulfur compounds}}2. ^{{Cite web|title=thiocyanic acid (CHEBI:29200)|url=https://www.ebi.ac.uk/chebi/searchId.do?chebiId=29200|work=Chemical Entities of Biological Interest|publisher=European Bioinformatics Institute|accessdate=5 June 2012|location=USA|date=18 October 2009|at=Main.}} 3. ^{{cite book |last1=Richter |first1=Victor von |last2=Spielmann |first2=Percy E., trans. |title=Organic Chemistry or Chemistry of the Carbon Compounds |date=1922 |publisher=P. Blakiston's Son & Co. |location=Philadelphia, Pennsylvania, U.S.A. |volume=vol. 1 |page=466 |url=https://books.google.com/books?id=WV0vAQAAMAAJ&pg=PA466#v=onepage&q&f=false}} 4. ^{{cite book|last1=Holleman |first1=A. F. |last2=Wiberg |first2=E. |title=Inorganic Chemistry |publisher=Academic Press |location=San Diego |date=2001 |ISBN=0-12-352651-5}} 5. ^{{cite journal|last1=Beard|first1=C. I.|last2=Dailey|first2=B. P.|title=The Structure and Dipole Moment of Isothiocyanic Acid|journal=The Journal of Chemical Physics|date=1950|volume=18|issue=11|pages=1437|doi=10.1063/1.1747507}} 6. ^{{cite book|last1=Martell |first1=A. E. |last2=Smith |first2=R. M. |last3=Motelaitis |first3=R. J. |title=NIST Database 46 |publisher=National Institute of Standards and Technology |location=Gaithersburg, MD |date=2001}} 7. ^{{cite journal | doi = 10.1016/S0009-2614(01)01180-0 |author1=Wierzejewska, M. |author2=Mielke, Z. | title = Photolysis of Isothiocyanic Acid HNCS in Low-Temperature Matrices. Infrared Detection of HSCN and HSNC Isomers | journal = Chemical Physics Letters | year = 2001 | volume = 349 | pages = 227–234}} 2 : Mineral acids|Thiocyanates |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。