Abstract
In this work two new perchlorate based inorganic salts with N-methylformamide (NMF) as a crystal solvate, Cu(ClO4)2·4NMF and Ni(ClO4)2·6NMF were synthesized and their structures confirmed by X-ray analysis. The influence of water content on absorption spectra M(ClO4)2·xNMF (where M = Co, Ni or Cu) in water ˗ N-methylformamide mixtures was investigated and overall molar absorption coefficients were calculated. Density, viscosity and electrical conductivity measurements of these salts in NMF were performed at the temperature T = 298.15 K, atmospheric pressure and in the concentration range up to ~0.2 mol·dm−3. All obtained results are compared with those obtained in water. From the calculated volumetric and viscometric parameters, nature of interactions between transition metal ions with peptide bond model system based on NMF were discussed.
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