Cyanometallates behavior

The substitution and protonation behavior of the rcms-dioxotetra-cyanometalate complexes of Re(V), Tc(V), W(IV), Mo(IV), and Os(VI) have been extensively investigated in the past decade and selected aspects have been reviewed (1, 2). Previous studies demonstrated the use of oxygen-17 NMR in different metal systems (3), including the complex oligomeric Mo(IV) aqueous systems (4), and therefore, since these oxocyano complexes contain an even wider range of nuclei such as 13C, 15N, 170, "Tc, and 183W, they are attractive model complexes to study by multinuclear NMR. Thus, detailed studies on the dynamics therein have been investigated in the past few years (5-8). 

The IT behavior of mixed-valence cyanometallates (23-26), Aqueous solutions of[Mo(CN)X, tW(CN)T (Fe(CN)T, and [FVJTd gT ions undergo remarkable color changes upon addition of Fe(IIT), Cu(ll),... 

Porous cyanometallates (M3[M (CN)6]2) have been obtained by mixing [M (CN)6] (M = Co, Fe) solution with (M= Fe, Co, Mn, Ni) salts. A detailed characterization of these materials has been performed with FTIR and powder XRD analysis. The CO2 adsorption measurements have also been performed up to 50 bar with a Rubotherm Magnetic Suspension Balance to investigate the microporous behavior of these maerials. 

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