| 词条 | Potassium chlorochromate |
| 释义 |
| ImageFile1 = Potassium chlorochromate.jpg | ImageFile2 = Potassium-chlorochromate-unit-cell-3D-balls.png | ImageSize1 = 144 px | ImageAlt = | IUPACName = | OtherNames = Potassium trioxochlorochromate,[1][2][3] Peligot's salt,Péligot's salt |Section1={{Chembox Identifiers | CASNo = 16037-50-6 | PubChem = 23689123 | SMILES = }} |Section2={{Chembox Properties | K=1|Cr=1|Cl=1|O=3 | MolarMass = | Appearance = orange solid | Density = 2.5228 g/cm3 | MeltingPt = | BoilingPt = | Solubility = }} |Section3={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} }} Potassium chlorochromate is a inorganic compound with the formula KCrClO3.[4] It is the potassium salt of chlorochromate, [CrO3Cl]−. It is a water soluble orange compound is used occasionally for oxidation of organic compounds. It is sometimes called Péligot's salt, in recognition of its discoverer Eugène-Melchior Péligot. Structure and synthesisPotassium chlorochromate was originally prepared by treating potassium dichromate with hydrochloric acid. An improved route involves the reaction of chromyl chloride and potassium chromate:[5] K2CrO4 + CrO2Cl2 → 2 KCrO3Cl The salt consists of the tetrahedral chlorochromate anion. The average Cr=O bond length is 159 pm, and the Cr-Cl distance is 219 pm.[6] ReactionsAlthough air-stable, its aqueous solutions undergo hydrolysis. With concentrated hydrochloric acid, it converts to chromyl chloride. When treated with 18-crown-6, it forms the lipophilic salt [K(18-crown-6]CrO3Cl.[7] Peligot's salt can oxidize benzyl alcohol, a reaction which can be catalyzed by acid.[8] A related salt, pyridinium chlorochromate, is more commonly used for this reaction. SafetyPotassium chlorochromate can be toxic upon ingestion (may cause acute poisoning and kidney damage amongst other complications) or contact with the human skin (may cause eye burns, irritation, allergy, or ulceration), especially if inhalated.[9] References1. ^Synonyms Of Chemicals. Csudh.edu (2003-09-16). Retrieved on 2011-06-01. {{inorganic-compound-stub}}2. ^{{cite book|author=Merck & Co|title=Merck's index: an encyclopedia for the chemist, pharmacist and physician|url=https://books.google.com/books?id=QQZKAAAAMAAJ|accessdate=1 June 2011|year=1930|publisher=Merck & Co.}} 3. ^{{cite book|author1=Arthur Rose |author2=Elizabeth Rose |title=The Condensed chemical dictionary |url=https://books.google.com/books?id=394yAAAAMAAJ |accessdate=1 June 2011 |year=1966 |publisher=Reinhold}} 4. ^Norm Stanley [https://web.archive.org/web/20081205012349/http://www.sas.org/E-Bulletin/2002-08-23/chem/body.html Colorful Chromium Compounds], 23 August 2002 5. ^{{cite journal|title=Potassium Monochlorochromate|author1=Harry H. Sisler|author2=Louis E. Marchi|journal=Inorg. Synth.|volume=2|pages=208–210|year=1946|doi=10.1002/9780470132333.ch64}} 6. ^{{cite journal|title=Redetermination of potassium chlorochromate, KCrO3Cl|author=U. Kolitsch| journal=Acta Crystallogr.|year=2002|volume=E58|issue=11|pages=i105–i107|doi=10.1107/S1600536802019396}} 7. ^{{cite journal|doi=10.1107/S1600536805000085|title=(18-Crown-6)potassium chlorochromate|year=2005|last1=Kotlyar|first1=Sergei A.|last2=Zubatyuk|first2=Roman I.|last3=Shishkin|first3=Oleg V.|last4=Chuprin|first4=Gennady N.|last5=Kiriyak|first5=Andrey V.|last6=Kamalov|first6=Gerbert L.|journal=Acta Crystallographica E|volume=61|issue=2|pages=m293–m295}} 8. ^{{cite journal|doi=10.1007/BF02064733|title=Kinetics and mechanism of the oxidation of benzyl alcohol by potassium chlorochromate|year=1991|last1=Özgün|first1=B.|last2=Pek|first2=A.|journal=Reaction Kinetics & Catalysis Letters|volume=43|issue=2|pages=589–594}} 9. ^{{cite book|author1=Susan Shaw |author2=Susan D. Shaw |author3=Monona Rossol |title=Overexposure: health hazards in photography |url=https://books.google.com/books?id=o-VjWgh5mPUC&pg=PA122 |accessdate=1 June 2011 |date=1 September 1991 |publisher=Allworth Communications, Inc. |isbn=978-0-9607118-6-4 |pages=122–}} 3 : Oxidizing agents|Chromates|Potassium compounds |
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