Letter | Published:

Preparation of Ferrous Ferricyanide

Naturevolume 231pages311312 (1971) | Download Citation

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Abstract

WE have synthesized ferrous ferricyanide, Fe3+2 (FeIII (CN)6)2 by vacuum pyrolysis of Prussian blue (ferric ferrocyanide, Fe4+3 (FeII (CN)6)3)—see refs. 1 and 2. This completes the preparation of the curious quartet of iron–iron cyanides. The cation in each case is high spin ferrous (2+) or ferric (3+) iron, and the cyanide-surrounded anion is low spin ferrous (II) or ferric (III) iron. These compounds precipitate from solution when soluble salts are mixed; ferric chloride and potassium ferrocyanide, for example, yield Prussian blue (ferric ferrocyanide).

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References

  1. 1

    Murty, D. S., and Collins, R. L., Bull. Amer. Phys. Soc., Series II, 15, 819 (1970).

  2. 2

    Collins, R. L., Murty, D. S., and Cosgrove, J. G., Bull. Amer. Phys. Soc., Series II, 16, 23 (1971).

  3. 3

    Epstein, L. M., J. Chem. Phys., 36, 2731 (1962).

  4. 4

    Maer, jun., K., Beasley, M. L., Collins, R. L., and Milligan, W. O., J. Amer. Chem. Soc., 90, 3201 (1968).

  5. 5

    Fung, S. C., and Drickamer, H. G., J. Chem. Phys., 51, 4353 (1969).

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Affiliations

  1. Physics Department, St Mary's University, Halifax, Nova Scotia

    • D. S. MURTY
  2. Physics Department, The University of Texas at Austin, Austin, Texas

    • J. G. COSGROVE
    •  & R. L. COLLINS

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https://doi.org/10.1038/231311a0

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