:Cadmium acetate
{{Chembox
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 443022839
| Name = Cadmium acetate
| ImageFile = cadmium acetate.png
| ImageSize =
| ImageName =
| IUPACName = Cadmium acetate
| OtherNames = Cadmium diacetate
| Section1 = {{Chembox Identifiers
| SMILES = [Cd+2].[O-]C(=O)C.[O-]C(=O)C
| SMILES_Comment = ionic form
| SMILES1 = O=C(C)O[Cd]OC(C)=O
| SMILES1_Comment = coordination form
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 10521
| PubChem = 10986
| UNNumber = 2570
| InChI = 1/2C2H4O2.Cd/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2
| InChIKey = LHQLJMJLROMYRN-NUQVWONBAK
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/2C2H4O2.Cd/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = LHQLJMJLROMYRN-UHFFFAOYSA-L
| CASNo = 543-90-8
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo2_Ref = {{cascite|correct|CAS}}
| CASNo2 = 5743-04-4
| CASNo2_Comment = (dihydrate)
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 95KC50Z1L0
| UNII2_Ref = {{fdacite|correct|FDA}}
| UNII2 = SA10IX931V
| UNII2_Comment = (dihydrate)
| RTECS = AF7505000
| EINECS = 208-853-2
}}
| Section2 = {{Chembox Properties
| Formula = Cd(CH3COO)2 (anhydrous)
Cd(CH3COO)2·2H2O (dihydrate)
| MolarMass = 230.500 g/mol (anhydrous)
266.529 g/mol (dihydrate)
| Appearance = colorless crystals (anhydrous)
white crystals (dihydrate)
| Odor = acetic acid
| Density = 2.341 g/cm3 (anhydrous)
2.01 g/cm3 (dihydrate)
| Solubility = soluble (anhydrous), very soluble (dihydrate)
| SolubleOther = soluble in methanol, ethanol (anhydrous)
soluble in ethanol (dihydrate)
| MeltingPt = {{ubl|{{cvt|255|C|F K}} (anhydrous)|{{cvt|130|C|F K}} (dihydrate decomposes)
{{cite book | last = Lide | first = David R. | year = 1998
| title = Handbook of Chemistry and Physics
| edition = 87 | volume =
| location = Boca Raton, Florida
| publisher = CRC Press
| isbn = 0-8493-0594-2 | pages = 447}}}}
| MagSus = −83.7·10−6 cm3/mol
}}
| Section3 = {{Chembox Structure
| Coordination =
| CrystalStruct = monoclinic
}}
| Section7 = {{Chembox Hazards
| ExternalSDS =
| NFPA-H = 3
| NFPA-F = 1
| NFPA-R = 0
| GHSPictograms = {{GHS07}}{{GHS09}}{{GHS06}}
| GHSSignalWord = Warning
| HPhrases = {{H-phrases|302|312|332|410}}
| PPhrases = {{P-phrases|261|264|270|271|273|280|301+312|302+352|304+312|304+340|312|322|330|363|391|501}}
| FlashPt =
| REL = Ca{{PGCH|0087}}
| PEL = [1910.1027] TWA 0.005 mg/m3 (as Cd)
}}
| Section8 = {{Chembox Related
| OtherAnions = Cadmium fluoride
Cadmium chloride
Cadmium bromide
Cadmium iodide
| OtherCations = Zinc acetate
Mercury(II) acetate
Silver acetate
}}
}}
Cadmium acetate is the chemical compound with the formula {{chem2|Cd(O2CCH3)2(H2O)2}}. The compound is marketed both as the anhydrous form and as a dihydrate, both of which are white or colorless. Only the dihydrate has been verified by X-ray crystallography.
Preparation, reactions, and uses
It forms by treating cadmium oxide with acetic acid:
{{cite book
| last = Gangolli
| first = S.
| year = 1999
| title = The Dictionary of Substances and Their Effects
| location = London
| publisher = Royal Society of Chemistry
| pages = 12–13
| isbn = 9780854048137
| url = https://books.google.com/books?id=s4YittJrOsAC&dq=%22Cadmium+acetate%22&pg=PA12
{{cite book | last =Patnaik
| first =Pradyot
| year = 2003
| title =Handbook of Inorganic Chemical Compounds
| publisher = McGraw-Hill Professional
| pages = 143–144
| isbn =0-07-049439-8
| url= https://books.google.com/books?id=Xqj-TTzkvTEC&dq=%22Cobalt+hydroxide%22+OR+%22Cobalt(II)+hydroxide%22&pg=PA243
| accessdate = 2009-03-29
}}
:{{chem2|CdO + 2 CH3CO2H + H2O -> Cd(O2CCH3)2(H2O)2}}
It can also be prepared by treating cadmium nitrate with acetic anhydride.{{cite book|author1=F. Wagenknecht|author2=R. Juza|chapter=Cadmium acetate|title=Handbook of Preparative Inorganic Chemistry, 2nd Ed. |editor=G. Brauer|publisher=Academic Press|year=1963|place=NY, NY|volume=2|pages=1105}}
Cadmium acetate has few applications. By reaction with trioctylphosphine selenide, it has often been used as a precursor to cadmium selenide and related semiconductors.{{cite journal |doi=10.1021/cm3035642|title=Conversion Reactions of Cadmium Chalcogenide Nanocrystal Precursors |year=2013 |last1=García-Rodríguez |first1=Raúl |last2=Hendricks |first2=Mark P. |last3=Cossairt |first3=Brandi M. |last4=Liu |first4=Haitao |last5=Owen |first5=Jonathan S. |journal=Chemistry of Materials |volume=25 |issue=8 |pages=1233–1249 }}
Structure of the dihydrate
Unlike the coordination geometry of zinc in zinc diacetate dihydrate, cadmium is seven coordinate in {{chem2|Cd(O2CCH3)2(H2O)2}}.{{cite journal |doi=10.1039/dt9720000956|title=Crystal and molecular structure of cadmium diacetate dihydrate |year=1972 |last1=Harrison |first1=W. |last2=Trotter |first2=J. |journal=Journal of the Chemical Society, Dalton Transactions |issue=8–9 |page=956 }} It is a coordination polymer, featuring acetate ligands interconnecting cadmium centers.
Safety
Cadmium compounds are considered Group 1 carcinogens by the IARC.
References
{{Reflist}}
{{Cadmium compounds}}
{{Acetates}}