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On the Synthesis and Spectral Properties of Iron‐ Cyanoferrates
Author(s) -
BenBassat A. H. I.
Publication year - 1968
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.196800015
Subject(s) - prussian blue , chemistry , protonation , colloid , mössbauer spectroscopy , aqueous medium , spectroscopy , inorganic chemistry , aqueous solution , organic chemistry , crystallography , ion , electrochemistry , electrode , physics , quantum mechanics
A new procedure for the synthesis of Prussian Green, using HNO 3 or dioxane media, is proposed. Synthesis from aqueous H 3 Fe(CN) 6 is described. I.R. spectra of solids and of colloidal suspensions of Prussian Brown, Prussian Green and Prussian Blue are recorded and discussed. An explanation for the 1960 cm −1 vibration stretching is proposed. The identity between Prussian and Turnbull Blue is questioned owing to I.R. results. A mechanism is proposed for the suggested oxyreduction reaction, based on analytical and mass spectroscopy data. Protonation of the complexed iron plays an important role in these reactions. Explanations for contradictory properties and Mössbauer results cited in literature are given.