كمپلكس هاي پلي پيريدپلي روتنيم (II) و اثر تمپليت آن ها بر واكنش تراكمي اتيلن گليكول با ليگاند 1، 10- فنانترولين -5، 6- دي اون

چكيده انگليسي :

Polypyridyl Ru II Complexes and their Template Effect in the Condensation Reaction of Ethyleneglycol with 1 10 Phenanthroline 5 6 dione Farid Hajarehaghighi f hajarehaghighi@ch iut ac ir Date of Submission 2012 02 14 Department of Chemistry Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Hassan Hadadzadeh hadad@cc iut ac ir Abstract In this thesis three mononuclear polypyridyl complexes of Ru II Ru phen diox 3 PF6 2 Ru phen diox 2 DMF 2 PF6 2 and Ru phen diox 2 H2O 2 PF6 2 have been prepared and characterized by elemental analysis FT IR and UV Vis spectroscopies Ru phen diox 3 PF6 2 has been purified by column chromatography with Alumina as stationary phase Orange crystals of Ru phen diox 3 PF6 2 were grown by ether diffusion into an actonitrile solution of the complex Solid state structures of Ru phen diox 3 PF6 2 was determined by single crystal X ray crystallography In the complex Ru II is six coordinate and the phen diox ligand is coordinated as a bidentate chelate with two Npyridyl atoms Single crystal X ray crystallography of Ru phen diox 3 PF6 2 shows a distorted octahedral geometry around Ru II Electronic spectrum of the complex was taken in actonitrile For the complex the intense absorption bands seen in the UV region are assigned to ligand centered transitions and an absorption band seen in the visible region is assigned to MLCT transition The FT IR spectrum of the compound shows a sharp and strong absorption band at 842 cm 1 for the P F The electrochemical studies of the complex indicate a metal base reduction at the positive potentials and ligand base reduction at the negative potentials Also the fluorescence spectra of the complex show high intensity emission in the visible region There is a very good agreement between experimental elemental analysis and calculated results Ru phen diox 2 DMF 2 PF6 2 has been purified by column chromatography Alumina has been used as stationary phase Brown crystals of Ru phen diox 2 DMF 2 PF6 2 were grown by ether diffusion method Electronic spectrum of the complex was taken in actonitrile For the complex the intense absorption bands seen in the UV region are assigned to ligand centered transitions and an absorption band seen in the visible region is assigned to MLCT transition The FT IR spectrum of the compound shows a sharp and strong absorption band at 843 cm 1 for the P F The electrochemical studies of the complex indicate a metal base reduction at the positive potentials and ligand base reduction at the negative potentials Also the fluorescence spectra of the complex show high intensity emission in the visible region There is a very good agreement between experimental elemental analysis and calculated results Ru phen diox 2 H2O 2 PF6 2 has been purified by column chromatography with Alumina as stationary phase Brown crystals of Ru phen diox 2 H2O 2 PF6 2 were grown by acetone diffusion into an aqueous solution of the complex Electronic spectrum of the complex was taken in actonitrile The intense absorption bands seen in the UV region are assigned to ligand centered transitions and an absorption band seen in the visible region is assigned to MLCT transition The FT IR spectrum of Ru phen diox 2 H2O 2 PF6 2 shows a sharp and strong absorption band at 845 cm 1 for the P F Also the fluorescence spectra of the complex show high intensity emission in the visible region There is a very good agreement between experimental elemental analysis and calculated results Ru phen dione 3 BF4 2 and Ru phen dione 2 H2O 2 BF4 2 have a template effect for condensation reaction ethyleneglycol with the coordinate phen dione ligands Also HOMO and LUMO orbitals of Ru phen diox 3 PF6 2 were determined by computational methods using Gaussian 03 and Gaussian 09 softwares performed by DFT calculations using GEN level of theory There is a very good agreement between experimental and calculated results Keywords Ru II complexes Polypyridyl ligands 1 10 Phenanth

حجاره حقيقي، فريد

كمپلكس هاي پلي پيريدپلي روتنيم (II) و اثر تمپليت آن ها بر واكنش تراكمي اتيلن گليكول با ليگاند 1، 10- فنانترولين -5، 6- دي اون

ليگاندهاي پلي پيريديلي , ساختار حالت جامد , ولتامتري چرخه اي , طيف فلوئورسانس