| Revision as of 12:45, 15 February 2012 editBeetstra (talk | contribs)Edit filter managers, Administrators172,031 edits Saving copy of the {{chembox}} taken from revid 473097278 of page Cobalt(II)_acetate for the Chem/Drugbox validation project (updated: ''). |
Latest revision as of 10:11, 26 August 2024 edit William Avery (talk | contribs)Autopatrolled, Extended confirmed users, Page movers, Pending changes reviewers, Rollbackers477,349 edits Remove empty section |
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{{ambox | text = This page contains a copy of the infobox ({{tl|chembox}}) taken from revid of page ] with values updated to verified values.}} |
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{{chembox |
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{{chembox |
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| Watchedfields = changed |
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| Watchedfields = changed |
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| verifiedrevid = 442343413 |
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| verifiedrevid = 476996050 |
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| ImageFile1 = Nickel(II)-acetate-tetrahydrate-3D-balls.png |
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| ImageFile = Octan kobaltnatý.JPG |
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| ImageFile2 = Octan kobaltnatý.JPG |
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| ImageSize = |
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| ImageSize = |
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| ImageName = Cobalt(II) acetate |
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| ImageName = Cobalt(II) acetate |
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| IUPACName = Cobalt(II) acetate |
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| IUPACName = Cobalt(II) acetate |
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| OtherNames = |
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| OtherNames = |
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| Section1 = {{Chembox Identifiers |
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|Section1={{Chembox Identifiers |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChemSpiderID = 6041 |
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| ChemSpiderID = 6041 |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| UNII = 3XC4P44U7E |
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| UNII = 3XC4P44U7E |
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| UNII1_Ref = {{fdacite|correct|FDA}} |
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| UNII1 = 7648Z91O1N |
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| UNII1_Comment = (tetrahydrate) |
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| InChI = 1/2C2H4O2.Co/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2 |
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| InChI = 1/2C2H4O2.Co/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2 |
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| InChIKey = QAHREYKOYSIQPH-NUQVWONBAX |
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| InChIKey = QAHREYKOYSIQPH-NUQVWONBAX |
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| StdInChIKey = QAHREYKOYSIQPH-UHFFFAOYSA-L |
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| StdInChIKey = QAHREYKOYSIQPH-UHFFFAOYSA-L |
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| CASNo = 71-48-7 |
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| CASNo = 71-48-7 |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASOther = (anhydrous)<br/>6147-53-1 (tetrahydrate) |
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| CASNo_Comment = (anhydrous) |
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| CASNo2_Ref = {{cascite|correct|CAS}} |
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| CASNo2 = 6147-53-1 |
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| CASNo2_Comment = (tetrahydrate) |
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| PubChem = 6277 |
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| PubChem = 6277 |
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| SMILES = .C(=O)C.C(=O)C |
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| SMILES = .C(=O)C.C(=O)C |
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| SMILES_Comment = ionic form |
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| SMILES1 = O=C(C)OOC(C)=O |
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| SMILES1_Comment = coordination form (anhydrate) |
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| SMILES2 = O=C(C)O()()()()OC(C)=O |
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| SMILES2_Comment = coordination form (tetrahydrate) |
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}} |
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}} |
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| Section2 = {{Chembox Properties |
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|Section2={{Chembox Properties |
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| Formula = Co(C<sub>2</sub>H<sub>3</sub>O<sub>2</sub>)<sub>2</sub> |
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| Appearance = Pink crystals (anhydrous) <br> intense red crystals (tetrahydrate) |
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| Appearance = Pink crystals (anhydrous) <br> intense red crystals (tetrahydrate) |
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| Odor = vinegar (tetrahydrate) |
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| Odor = vinegar (tetrahydrate) |
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| Density = 1.705 g/cm<sup>3</sup> (tetrahydrate) |
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| Density = 1.705 g/cm<sup>3</sup> (tetrahydrate) |
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| MolarMass = 177.02124 g/mol (anhydrous) <br> 249.08 g/mol (tetrahydrate) |
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| MolarMass = 177.02124 g/mol (anhydrous) <br> 249.08 g/mol (tetrahydrate) |
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| MeltingPtC = 140 |
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| MeltingPt = 140 °C (tetrahydrate) |
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| MeltingPt_notes = (tetrahydrate) |
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| BoilingPt = |
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| BoilingPt = |
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| Solubility = Soluble |
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| Solubility = Soluble |
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| SolubleOther = soluble in ], dilute acids, ] (tetrahydrate) |
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| SolubleOther = soluble in ], dilute acids, ] (tetrahydrate) |
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| RefractIndex = 1.542 (tetrahydrate) |
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| RefractIndex = 1.542 (tetrahydrate) |
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| MagSus = +11,000·10<sup>−6</sup> cm<sup>3</sup>/mol |
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}} |
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| Section3 = {{Chembox Hazards |
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|Section3={{Chembox Hazards |
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| ExternalMSDS = |
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| ExternalSDS = |
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| NFPA-H = 1 |
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| NFPA-H = 1 |
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| NFPA-R = 0 |
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| NFPA-R = 0 |
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| NFPA-F = 0 |
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| NFPA-F = 0 |
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| FlashPt = |
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| FlashPt = |
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| Autoignition = |
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| AutoignitionPt = |
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| LD50 = 503 mg/kg (oral, rat) |
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| LD50 = 503 mg/kg (oral, rat) |
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'''Cobalt(II) acetate''' is the ] ] of ]. It is commonly found as the ] Co(CH<sub>3</sub>CO<sub>2</sub>)<sub>2</sub>·4 H<sub>2</sub>O, abbreviated Co(OAc)<sub>2</sub>·4 H<sub>2</sub>O. It is used as a ]. |
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==Synthesis and structure== |
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Like many other ], cobalt(II) acetate forms by the reaction of cobalt oxide or hydroxide and acetic acid: |
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: CoO + 2{{nbsp}}CH<sub>3</sub>CO<sub>2</sub>H + 3{{nbsp}}H<sub>2</sub>O → Co(CH<sub>3</sub>CO<sub>2</sub>)<sub>2</sub>·4 H<sub>2</sub>O |
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The tetrahydrate has been shown by ] to adopt an octahedral structure, the central cobalt centre being coordinated by four water molecules and two acetate ]s.<ref>{{cite journal |doi=10.1107/S1600536803019093|title=Cobalt diacetate tetrahydrate|year=2003|last1=Sobolev|first1=Alexandre N.|last2=Miminoshvili|first2=Elguja B.|last3=Miminoshvili|first3=Ketevan E.|last4=Sakvarelidze|first4=Tamara N.|journal=Acta Crystallographica Section E|volume=59|issue=10|pages=m836–m837}}</ref> The analogous ] is isostructural.<ref>{{cite journal | doi = 10.1107/S0365110X5300171X | journal = ] | title = The crystal structures of nickel acetate, Ni(CH<sub>3</sub>COO)<sub>2</sub>·4H<sub>2</sub>O, and cobalt acetate, Co(CH<sub>3</sub>COO)<sub>2</sub>·4H<sub>2</sub>O | year = 1953 | last1 = Van Niekerk | first1 = J. N. | last2 = Schoening | first2 = F. R. L. | volume = 6 | issue = 7 | pages = 609–612}}</ref> |
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Various hydrates are known including Co(CH<sub>3</sub>CO<sub>2</sub>)<sub>2</sub>·H<sub>2</sub>O and <sub>5</sub>·0.5 H<sub>2</sub>O.<ref>{{cite journal |doi=10.1002/zaac.200900457|title=Infinite Coordination Polymers of One- and Two-dimensional Cobalt Acetates|year=2010|last1=Zhang|first1=Gao|last2=Lin|first2=Jian|last3=Guo|first3=Dong-Wei|last4=Yao|first4=Shi-Yan|last5=Tian|first5=Yun-Qi|journal=Zeitschrift für Anorganische und Allgemeine Chemie|volume=636|issue=7|pages=1401–1404}}</ref> |
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==Reactions and uses== |
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Cobalt acetate is a precursor to various ]s, catalysts that allow paints and varnishes to harden.<ref>John Dallas Donaldson, Detmar Beyersmann, "Cobalt and Cobalt Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2005. {{doi|10.1002/14356007.a07_281.pub2}}</ref> |
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] cobalt acetate is a widely used source of cobalt in the synthesis of materials,<ref>{{cite journal |doi=10.1038/nmat4113|title=Metal–organic framework nanosheets in polymer composite materials for gas separation|year=2015|last1=Rodenas|first1=Tania|last2=Luz|first2=Ignacio|last3=Prieto|first3=Gonzalo|last4=Seoane|first4=Beatriz|last5=Miro|first5=Hozanna|last6=Corma|first6=Avelino|last7=Kapteijn|first7=Freek|last8=Llabrés i Xamena|first8=Francesc X.|last9=Gascon|first9=Jorge|journal=Nature Materials|volume=14|issue=1|pages=48–55|pmid=25362353|pmc=4270742|bibcode=2015NatMa..14...48R}}</ref> catalyst,<ref>{{cite journal |doi=10.1016/j.tet.2006.06.065|title=Recent advances in homogeneous transition metal-catalyzed aerobic alcohol oxidations|year=2006|last1=Schultz|first1=Mitchell J.|last2=Sigman|first2=Matthew S.|journal=Tetrahedron|volume=62|issue=35|pages=8227–8241}}</ref> and complexes.<ref>{{cite journal | doi = 10.1021/ed054p443 | journal = ] | title = Oxygen Uptake by a Cobalt(II) Complex | author = Appleton, T. G. | year = 1977 | volume = 54 | issue = 7 | pages = 443}}</ref> |
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Oxidation of acetic acid solutions of cobalt(II) acetate, e.g. with ozone, gives cobalt(III) acetates, which are strong oxidants.<ref>{{cite book |doi=10.1002/047084289X.rc188 |chapter=Cobalt(III) Acetate |title=Encyclopedia of Reagents for Organic Synthesis |date=2001 |last1=Periasamy |first1=Mariappan |last2=Radhakrishnan |first2=Ukkiramapandian |isbn=0-471-93623-5 }}</ref> |
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==Safety== |
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Cobalt salts are poisonous.{{citation needed|date=August 2024}} |
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==References== |
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{{Reflist}} |
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{{Cobalt compounds}} |
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{{Acetates}} |
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] |
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] |