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Ag4[Fe(CN)6]→Ag reduction process occurring in Ag4[Fe(CN)6]- gelatin-immobilized matrices, has been studied. In the course of reduction, these matrices are in a contact with water-alkaline solu-tion containing tin(II) dichloride along with an organic or inorganic compound capable of forming a stable soluble complex with Ag(I). It has been found that the substance formed in the gelatin matrix, is almost pure elemental silver, which consists two various phases which are distinguished by their optical and X-ray diffraction parameters. [...]
Using density functional theory (DFT) at the OPBE/TZP level, the calculation of the geometric parameters of the molecular structures of M(II) (5456)macrotetracyclic complexes with a tetradentate macrocyclic ligand with (NNNN)-coordination of donor centers, resulting from template reactions in M(II)- thiooxamide- guanidine-formaldehyde quaternary systems, where M= Mn, Fe, Co, Ni, Cu, Zn was performed. The calculation of the molecular structure of this “template” ligand itself was also carried out. The values of the bond lengths, bond and torsion angles in the resulting complexes are presented. The values of the standard enthalpy, entropy and Gibbs free energy of formation of these compounds were also calculated. [...]
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