Gadolinium acetate
{{use dmy dates|date=August 2024}}
{{Chembox
| Name = Gadolinium acetate
| ImageFile = Gadolinium(III) acetate.jpg
| ImageSize =
| ImageAlt =
| IUPACName =
| OtherNames = Gadolinium ethanoate
| Section1 = {{Chembox Identifiers
| CASNo = 31298-16-5
| CASNo_Ref = {{cascite|correct|CAS}}
| ChemSpiderID = 140478
| EC_number = 240-204-9
| PubChem = 159771
| StdInChI=1S/3C2H4O2.Gd/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3
| StdInChIKey = LYQGMALGKYWNIU-UHFFFAOYSA-K
| SMILES = CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Gd+3]
}}
| Section2 = {{Chembox Properties
| Formula = Gd(CH3COO)3
| MolarMass =
| Appearance = colorless crystal or white powder
| Density = 1.611 g·cm−3 (hydrate)
| MeltingPt =
| BoilingPt =
| Solubility = 9.7 g{{huh|reason=Per what volume?|date=February 2023}}}}
| Section3 = {{Chembox Hazards
| GHS_ref=[https://pubchem.ncbi.nlm.nih.gov/compound/159771#section=Safety-and-Hazards]
| GHSPictograms = {{GHS07}}
| GHSSignalWord = Warning
| HPhrases = {{H-phrases|315|319|335}}
| PPhrases = {{P-phrases|261|264|264+265|271|280|302+352|304+340|305+351+338|319|321|332+317|337+317|362+364|403+233|405|501}}
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Gadolinium acetate is the acetate salt of the lanthanide element gadolinium with the chemical formula Gd(CH3COO)3. It is a colorless crystal that is soluble in water and can form a hydrate.{{Cite book |date=1971 |publisher=Химия |editor-last=Никольский |editor-first=Б.П. |edition=3-е изд., испр |volume=2 |location=Л. |script-title=ru: Справочник химика |lang=ru}} Its tetrahydrate has ground state ferromagnetism.
Preparation
The tetrahydrate of gadolinium acetate can be crystallized from aqueous solution by reaction of gadolinium oxide and acetic acid:{{Cite journal |last=Hatscher |first=Stephan T. |last2=Urland |first2=Werner |date=2003 |title=Unexpected Appearance of Molecular Ferromagnetism in the Ordinary Acetate [Gd(OAc)3(H2O)22]⋅4 H2O |url=https://www.onlinelibrary.wiley.com/doi/abs/10.1002/anie.200250738 |journal=Angewandte Chemie International Edition |volume=42 |issue=25 |pages=2862–2864 |doi=10.1002/anie.200250738 |issn=1521-3773 |pmid=12833342 |archive-url=https://web.archive.org/web/20200527020954/https://www.onlinelibrary.wiley.com/doi/abs/10.1002/anie.200250738 |archive-date=2020-05-27 |accessdate=2019-02-01|url-access=subscription }}
: Gd2O3 + 6 HOAc + 5 H2O → [(Gd(OAc)3(H2O)2)2]·4H2O
Properties
The complex [Gd4(CH3COO)4(acac)8(H2O)4] can be obtained by the reflux reaction of gadolinium acetate and acetylacetone in the presence of triethylamine in methanol solution.{{Cite journal |last=Guo |first=Fu-Sheng |last2=Leng |first2=Ji-Dong |last3=Liu |first3=Jun-Liang |last4=Meng |first4=Zhao-Sha |last5=Tong |first5=Ming-Liang |date=2012-01-02 |title=Polynuclear and Polymeric Gadolinium Acetate Derivatives with Large Magnetocaloric Effect |url=https://doi.org/10.1021/ic2018314 |journal=Inorganic Chemistry |volume=51 |issue=1 |pages=405–413 |doi=10.1021/ic2018314 |issn=0020-1669 |pmid=22145780 |accessdate=2019-02-01|url-access=subscription }}