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| Neodymium acetate | |
|---|---|
| Names: | neodymium(III) acetate neodymium triacetate neodymium(III) ethanoate |
| Formula: | Nd(CH3COO)3 (anhydrous) Nd(CH3COO)3 · H2O (monohydrate) Nd(CH3COO)3 · 4H2O (tetrahydrate) |
| Molar mass: | 321.371 g/mol (anhydrous) 339.386 g/mol (monohydrate) 393.431 g/mol (tetrahydrate) |
| Crystal system: | triclinic (tetrahydrate) a=9.425 Å, b=9.932 Å, c=10.65 Åα=88.09°, β=115.06°, γ=123.69° |
| Shapes: | |
| Color: | pale pink pale violet |
| Optical properties: | pleochroism |
| Magnetic properties: | paramagnetic |
| Stability: | slightly hygroscopic (anhydrous) erodes (tetrahydrate) |
| Hardness: | fragile |
| Toxicity: | moderately toxic |
Description
Organic compound, salt of trivalent rare earth metal neodymium and organic acetic acid. From water solutions crystallizes as tetrahydrate and monohydrate.
Precursors
Reaction between neodymium(III) oxide, hydroxide or carbonate and acetic acid
Chemical equation:
100.00g of neodymium acetate tetrahydrate а 59.54g of carbonate or 49.63g of hydroxide or 42.76g of neodymium oxide and 65.42g of 70% acetic acid is required.Add acid to the flask, then add small parts of neodymium 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.
Reaction between neodymium magnet (usually from HDD) and acetic acid
Chemical equation:
100.00g of neodymium acetate tetrahydrate а 137.40g of mass of magnet and 218.05g of 70% acetic acid is required.Add hot acid solution to the flask, then add neodymium magnet pieces, shavings or powder and stir it until gas emission will stop. For purifying compound from {{{impurity}}} add large amount of cold ethanol to solution, salt will settle to the bottom in the form of fine crystals or powder. Filter precipitate and wash it with small amount of the same solvent, then filter the solution and use it for crystal growing.
Magnet should be calcined to remove magnetical properties and released from a nickel shell.
Best results are obtained by evaporation solution to a solid state and its dissolution in ethanol.
Storage conditions
For crystal storing use hermetic vessel with small amount of saturated solution at the bottom or place wadding moistened with such solution. You can use such alternatives as vessel with vaseline or vegetable oil, organic non-hygroscopic solvent (kerosene, benzine or paraffin). Also you can use acrylate polymer or another kinds of solidifying plastic.
Solubility
| Temperature | гр/100,00 гр water | ||
|---|---|---|---|
| (anhydrous) | (monohydrate) | (tetrahydrate) | |
| 0°C273.15 K <br />32 °F <br />491.67 °R <br /> | ~21.1 | 22.6 | ~27.2 |
| 10°C283.15 K <br />50 °F <br />509.67 °R <br /> | ~22.8 | ~24.4 | ~29.5 |
| 20°C293.15 K <br />68 °F <br />527.67 °R <br /> | ~24.5 | 26.2 | ~31.7 |
Gallery
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Growth from of solution for a monthNeodymium acetate, Sergey Sachkov, VKontakteVKontakte
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Growth from of solution for a monthNeodymium acetate, Sergey Sachkov, VKontakteVKontakte
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Growth from of solution for a monthNeodymium acetate, Sergey Sachkov, VKontakteVKontakte
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Growth from of solution for a monthNeodymium acetate, Sergey Sachkov, VKontakteVKontakte
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Under the microscopeNeodymium acetate, Sergey Sachkov, VKontakteVKontakte
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Under the microscopeNeodymium acetate, Sergey Sachkov, VKontakteVKontakte
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Under the microscopeNeodymium acetate, Sergey Sachkov, VKontakteVKontakte
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Under the microscopeNeodymium acetate, Sergey Sachkov, VKontakteVKontakte
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Neodymium compounds in sunlightCategory:Neodymium compounds, Chemistry chemists periodicalChemistry chemists periodical
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Neodymium compounds in fluorescent lightingCategory:Neodymium compounds, Chemistry chemists periodicalChemistry chemists periodical
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Neodymium compounds in LED lightingCategory:Neodymium compounds, Chemistry chemists periodicalChemistry chemists periodical
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) |
| Neodymium compounds | |
|---|---|
|
Neodymium acetate (Nd(CH3COO)3) • Neodymium nitrate (Nd(NO3)3) • Neodymium oxalate (Nd2(C2O4)3) • Neodymium sulfate (Nd2(SO4)3) |