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Chemical compound From Wikipedia, the free encyclopedia
Nickel(II) acetate is the name for the coordination compounds with the formula Ni(CH3CO2)2·x H2O where x can be 0, 2, and 4. The mint-green tetrahydrate Ni(CH3CO2)2·4 H2O is most common. It is used for electroplating.
Names | |
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Systematic IUPAC name
Nickel(2+) diacetate | |
Identifiers | |
3D model (JSmol) |
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ECHA InfoCard | 100.006.147 |
EC Number |
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PubChem CID |
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UNII |
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CompTox Dashboard (EPA) |
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Properties | |
C4H6NiO4 | |
Molar mass | 176.781 g·mol−1 |
Appearance | Mint-green Solid |
Odor | slight acetic acid |
Density | 1.798 g/cm3 (anhydrous) 1.744 g/cm3 (tetrahydrate) |
Melting point | decomposes when heated [1][2] |
Easily soluble in cold water, hot water | |
Solubility | Soluble in methanol insoluble in diethyl ether, n-octanol |
+4,690.0·10−6 cm3/mol | |
Structure | |
monoclinic | |
P21/c | |
a = 4.764, b = 11.771, c = 8.425 Å tetrahydrate | |
Lattice volume (V) |
471.5 |
Formula units (Z) |
2 |
distorted octahedral | |
Hazards | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
350 mg/kg (rat, oral) 410 mg/kg (mouse, oral)[4] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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The compound can be prepared by treating nickel or nickel(II) carbonate with acetic acid:
The mint-green tetrahydrate has been shown by X-ray crystallography to adopt an octahedral structure, the central nickel centre being coordinated by four water molecules and two acetate ligands.[5] It may be dehydrated in vacuo, by reaction with acetic anhydride[6] or by heat.[7]
Nickel salts are toxic, carcinogenic and irritate the skin.
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