Gadolinium acetate

Gadolinium acetate ;
Names:	gadolinium(III) acetate; gadolinium triacetate; gadolinium(III) ethanoate;
Formula:	Gd(CH3COO)3 (anhydrous); Gd(CH3COO)3 · 4H2O (tetrahydrate);
Molar mass:	334.381 g/mol (anhydrous); 406.441 g/mol (tetrahydrate);
Density:	1.611 g/cm3 (tetrahydrate);
Crystal system:	triclinic (tetrahydrate); a=10.79 Å, b=9.395 Å, c=8.941 Åα=60.98°, β=88.5°, γ=62.31°;
Shapes:	https://en.crystalls.info/w/uploads/media/5/51/Rhombic_pedion.json Rhombic pedion https://en.crystalls.info/w/uploads/media/f/ff/Parallelogram.json Parallelogram https://en.crystalls.info/w/uploads/media/b/bc/Rhombic_prism.json Rhombic prism ;
Color:	colorless;
Decomposition point:	450 °C723.15 K <br />842 °F <br />1,301.67 °R <br /> (anhydrous); 150 °C423.15 K <br />302 °F <br />761.67 °R <br /> (tetrahydrate);
Magnetic properties:	paramagnetic;
Stability:	stable (tetrahydrate);
Hardness:	fragile;
Toxicity:	moderately toxic

Description

Organic compound, salt of trivalent rare earth metal gadolinium and organic acetic acid. From water solutions crystallizes as tetrahydrate.

Precursors

Reaction between gadolinium (III) oxide, hydroxide or carbonate and acetic acid

Chemical equation:

6CH₃COOH + Gd₂O₃ = 2Gd(CH₃COO)₃ + 3H₂O

3CH₃COOH + Gd(OH)₃ = Gd(CH₃COO)₂ + 3H₂O

6CH₃COOH + Gd₂(CO₃)₃ = 2Gd(CH₃COO)₃ + 3H₂O + 3CO₂↑

For preparation of 100.00g of gadolinium acetate

tetrahydratetetrahydrate
anhydrous

а 60.84g of gadolinium carbonate or 51.24g of hydroxide or 44.59g of oxide and 63.32g of

70%70%
30%
9%

acetic acid is required.

Add acid to the flask, then add small parts of gadolinium compound with stirring until it will totally dissolve or, if you use carbonate, until carbon dioxide emission will stop. After reaction will stop, filter the solution and use it for crystal growing.

Storage conditions

Keep in its original form or under several layers of varnish at average humidity and room temperature. Do not keep crystals near heaters.

Solubility

TableGraph

Temperature	g/`100,00` g water
Temperature	(anhydrous)	(tetrahydrate)
25°C298.15 K <br />77 °F <br />536.67 °R <br />	`9.7`	`11.6`

Gallery

Crystals under polarizing microscope.Gadolinium acetate, Brain&Force, Sciencemadness forumBrain&ForceSciencemadness forum
Crystals under polarizing microscope.Gadolinium acetate, Brain&Force, Imgur galleryBrain&ForceImgur gallery

Sources

Acetates

Salts

Calcium acetate (Ca(CH₃COO)₂) • Copper(II) acetate (Cu(CH₃COO)₂) • Chromium(II) acetate (Cr(CH₃COO)₂) • Gadolinium acetate (Gd(CH₃COO)₃) • Dysprosium acetate (Dy(CH₃COO)₃) • Holmium acetate (Ho(CH₃COO)₃) • Iron(II) acetate (Fe(CH₃COO)₂) • Lead(II) acetate (Pb(CH₃COO)₂) • Manganese(II) acetate (Mn(CH₃COO)₂) • Neodymium acetate (Nd(CH₃COO)₃) • Nickel acetate (Ni(CH₃COO)₂) • Samarium acetate (Sm(CH₃COO)₃) • Strontium acetate (Sr(CH₃COO)₂) • Sodium acetate (NaCH₃COO) • Zinc acetate (Zn(CH₃COO)₂)

Double Salts

Copper-calcium acetate (CuCa(CH₃COO)₄) • Uranyl-sodium acetate (NaUО2(CH₃COO)₃) • Uranyl-zinc-sodium acetate (NaZn(UO₂)₃(CH₃COO)₉)

Gadolinium compounds
Gadolinium acetate (Gd(CH₃COO)₃) • Gadolinium sulfate (Gd₂(SO₄)₃)

Gadolinium acetate
Names:	gadolinium(III) acetate gadolinium triacetate gadolinium(III) ethanoate
Formula:	Gd(CH₃COO)₃ (anhydrous) Gd(CH₃COO)₃ · 4H₂O (tetrahydrate)
Molar mass:	334.381 g/mol (anhydrous) 406.441 g/mol (tetrahydrate)
Density:	1.611 g/cm³ (tetrahydrate)
Crystal system:	triclinic (tetrahydrate) a=10.79 Å, b=9.395 Å, c=8.941 Åα=60.98°, β=88.5°, γ=62.31°
Shapes:	Rhombic pedion Parallelogram Rhombic prism
Color:	colorless
Decomposition point:	450 °C723.15 K <br />842 °F <br />1,301.67 °R <br /> (anhydrous) 150 °C423.15 K <br />302 °F <br />761.67 °R <br /> (tetrahydrate)
Magnetic properties:	paramagnetic
Stability:	stable (tetrahydrate)
Hardness:	fragile
Toxicity:	moderately toxic