Bobukhov D. Synthesis, structure and properties of rhenium carbonyl derivatives

The subject of investigation - rhenium(I) carbonyl compounds with different ligand systems. The purpose of investigation: synthesis, determination of structure and properties of complexes based on rhenium(I) carbonyls as potential luminophores and biological markers. Methods of investigation: IR-, UV-, NMR-, mas-spectrometry (determination of composition and structure of synthesized compounds), luminescence spectroscopy (investigation of luminescence properties), chemical analysis (determination of composition of synthesized compounds), differential thermal analysis (determination of phase transitions), X-ray structural analysis (determination of crystal structure), cyclic voltammetry (determination of redox properties). Theoretical and practical results: the methods of nonautoclave synthesis of rhenium(I) pentacarbonylhalides by reduction of rhenium compounds with sodium hypophosphite in the mixture of formic and hydrohalic acids have been designed. Individual 4f-luminescence of heteronuclear Re(I)-Yb(III) complexes in the near-infrared spectrum has been detected. It has been found that rhenium metal center in Re(I)-Yb(III) complexes acts as a sensitizer of luminescence. The novelty of positions and results: first a series of Re(I)-Ln(III) heteronuclear compounds has been synthesized and their spectral-luminescence properties have been studied. First the selective addition of three metal centers (Re(I), Mn(I), ferrocene) to the fragment of peptide-nucleic acid through specific addition reactions of acetylene, carboxyl and amino groups. Scope of use: synthesized homo- and heteronuclear complexes of rhenium(I) could find practical application as luminophores in the new technique materials and as biological markers in biomedicine.