Complexation of Zn2[Fe(CN)6] with M2+ (M = Mn, Co, Ni, Cu, Cd) in Zn2[Fe(CN)6] gelatin-immobilized matrices


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Abstract

Electrophilic substitution reactions Zn2+ → M2+ (M = Mn, Co, Ni, Cu, Cd) in thin gelatin layers with immobilized zinc(II) hexacyanoferrate brought in contact with the aqueous solutions of d-element chlorides are studied. In all cases (except for Mn(II)), Zn atoms are partially replaced by all metals in question with the formation of the corresponding binuclear ZnM hexacyanoferrates(II). No complete replacement of Zn(II) to mononuclear hexacyanoferrate(II) of substituting metal occurs in neither of the cases.

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