Abstract
[Fe(Me-phen)Cl4][Me-phen·H] (1) and [Fe(Cl-phen)Cl4][Cl-phen·H] (2) complexes were prepared from the reactions of FeCl3·6H2O with 5-methyl-1,10-phenanthroline (Me-phen) and 5-chloro-1,10-phenanthroline (Cl-phen), respectively, in a 0.1 M aqueous solution of HCl. Stepwise addition of dimethyl sulfoxide to the solution of 1 in methanol results in a mixed ligand complex, [Fe(Me-phen)Cl3(DMSO)] (3). Complex 3 was also prepared by two other methods. The reaction of a methanol solution of [Fe(Me-phen)Cl4][Me-phen·H] (1) with [Fe(DMSO)4Cl2][FeCl4] in 1:6 ratio led to 3. Complex 3 was also prepared from the reaction of 5-methyl-1,10-phenanthroline with [Fe(DMSO)4Cl2][FeCl4] in 1:1 ratio in methanol. The three complexes were characterized by IR, UV–Vis, 1H NMR and luminescence spectroscopy and their structures were studied by the single-crystal diffraction method. Calculation methods were employed to study the isomerization of (3) in solution.
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Acknowledgments
We would like to thank the Graduate Study Councils of Shahid Beheshti University for financial support (Project 600/2221). We are grateful to Prof. S. W. Ng for providing us the software Gaussian suite of programs and hardware (machine time) facilities and also the opportunity to access some new features of Gaussian products. Full crystallographic details are deposited with the Cambridge Structural Database (CCDC No 891160 for complex 1, 891,161 for complex 2 and 891,162 for complex 3). Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB21EZ, UK.
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Amani, V., Safari, N. & Notash, B. Iron(III) hetero-ligand complexes containing 1,10-phenanthroline derivatives, chloride and dimethyl sulfoxide: synthesis, characterization, crystal structure determination and luminescent properties. J IRAN CHEM SOC 10, 751–761 (2013). https://doi.org/10.1007/s13738-012-0209-x
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DOI: https://doi.org/10.1007/s13738-012-0209-x