Gadolinium acetate

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.^[1] Its tetrahydrate has ground state ferromagnetism.^[2]

Gadolinium acetate

Names
Other names Gadolinium ethanoate
Identifiers
CAS Number	31298-16-5 Y
3D model (JSmol)	Interactive image
ChemSpider	140478
ECHA InfoCard	100.036.534
EC Number	240-204-9
PubChem CID	159771
CompTox Dashboard (EPA)	DTXSID80890769
InChI InChI=1S/3C2H4O2.Gd/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3 Key: LYQGMALGKYWNIU-UHFFFAOYSA-K
SMILES CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Gd+3]
Properties
Chemical formula	Gd(CH3COO)3
Appearance	colorless crystal or white powder
Density	1.611 g·cm−3 (hydrate)
Solubility in water	9.7 g[clarification needed]
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation

The tetrahydrate of gadolinium acetate can be crystallized from aqueous solution by reaction of gadolinium oxide and acetic acid:^[2]

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.^[3]