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The monograph is devoted to the study of compounds belonging to polyiodides. A family of polyiodides of transition element complexes was synthesized, their crystal structures as well as those of analogous iodide derivatives were determined, a comparative analysis of peculiarities of their supramolecular structure was performed. Correlation dependence of the structures of the obtained complex iodides and polyiodides on their composition was found. It was shown that with increasing iodine content a transition from amide-based clathrate coordination structure to layered structure and further to channel and framework structure based on iodine occurs. The dependence of the I-I bond valence band position in Raman spectra on the bond length has been established. The electrical conductivity of polyiodides was shown to correlate with the crystal structure; the maximum electrical conductivity was found for polyiodides containing chains of iodine atoms. The presence of ionic electrical conductivity makes it possible to use the obtained polyiodides as a working body of solid-phase current sources, temperature sensors, sensor devices.
The monograph is devoted to the study of compounds belonging to polyiodides. A family of polyiodides of transition element complexes was synthesized, their crystal structures as well as those of analogous iodide derivatives were determined, a comparative analysis of peculiarities of their supramolecular structure was performed. Correlation dependence of the structures of the obtained complex iodides and polyiodides on their composition was found. It was shown that with increasing iodine content a transition from amide-based clathrate coordination structure to layered structure and further to channel and framework structure based on iodine occurs. The dependence of the I-I bond valence band position in Raman spectra on the bond length has been established. The electrical conductivity of polyiodides was shown to correlate with the crystal structure; the maximum electrical conductivity was found for polyiodides containing chains of iodine atoms. The presence of ionic electrical conductivity makes it possible to use the obtained polyiodides as a working body of solid-phase current sources, temperature sensors, sensor devices.
The monograph is devoted to the study of compounds belonging to polyiodides. A family of polyiodides of transition element complexes was synthesized, their crystal structures as well as those of analogous iodide derivatives were determined, a comparative analysis of peculiarities of their supramolecular structure was performed. Correlation dependence of the structures of the obtained complex iodides and polyiodides on their composition was found. It was shown that with increasing iodine content a transition from amide-based clathrate coordination structure to layered structure and further to channel and framework structure based on iodine occurs. The dependence of the I-I bond valence band position in Raman spectra on the bond length has been established. The electrical conductivity of polyiodides was shown to correlate with the crystal structure; the maximum electrical conductivity was found for polyiodides containing chains of iodine atoms. The presence of ionic electrical conductivity makes it possible to use the obtained polyiodides as a working body of solid-phase current sources, temperature sensors, sensor devices.