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Nickel(II) acetate

1.744 g/cm3 (tetrahydrate) insoluble in diethyl ether, n-octanol | NFPA-H = 2 | NFPA-F = 0 | NFPA-R = 0 | NFPA-S = 410 mg/kg (mouse, oral)

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.

Synthesis and structure

The compound can be prepared by treating nickel or nickel(II) carbonate with acetic acid:

:NiCO3 + 2 CH3CO2H + 3 H2O → Ni(CH3CO2)2·4 H2O + CO2

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. It may be dehydrated in vacuo, by reaction with acetic anhydride or by heat.

Safety

Nickel salts are toxic, carcinogenic and irritate the skin.

References

References

  1. M. A. Mohamed, S. A. Halawy, M. M. Ebrahim: "Non-isothermal decomposition of nickel acetate tetrahydrate", in: ''Journal of Analytical and Applied Pyrolysis'', '''1993''', ''27'' (2), S. 109–110. {{doi. 10.1016/0165-2370(93)80002-H.
  2. G. A. M. Hussein, A. K. H. Nohman, K. M. A. Attyia: "Characterization of the decomposition course of nickel acetate tetrahydrate in air", in: ''[[Journal of Thermal Analysis and Calorimetry]]'', '''1994''', ''42'', S. 1155–1165; {{doi. 10.1007/BF02546925.
  3. (15 March 1971). "A three-dimensional study of the crystal structure of nickel acetate tetrahydrate". Acta Crystallographica Section B.
  4. {{IDLH. 7440020. Nickel metal and other compounds (as Ni)
  5. (1953). "The crystal structures of nickel acetate, Ni(CH3COO)2·4H2O, and cobalt acetate, Co(CH3COO)2·4H2O". [[Acta Crystallogr.]].
  6. (2005). "Nickel Compounds".
  7. (1963). "Cobalt and Nickel Acetates in Anhydrous Acetic Acid". [[Inorg. Chem.]].
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