کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1334753 979453 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, crystal structure, DFT and spectroscopic studies of mononuclear chromium(III) complex with bidentate ligand
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis, crystal structure, DFT and spectroscopic studies of mononuclear chromium(III) complex with bidentate ligand
چکیده انگلیسی

The mononuclear neutral Cr(III) complex, [Cr(L)3] (1) (where LH = 4-methyl-2,6-dibenzoylphenol (mdbpH)) has been synthesized and characterized by elemental analysis, conductivity measurement, mass spectrometry, IR, electronic and ESR spectroscopy, cyclic voltammetry and X-ray crystallography. Crystal structure determination reveals that 1 comprises three monoanionic bidentate ligands (2,6-PhCO)2(4-Me)C6H2O− coordinating through phenolic O and benzoyl O atoms to give a mer-CrO3O3 octahedral configuration. The optimized geometry and the electronic transitions of the complex were calculated using methods based on the density functional theory. The ESR spectra indicate a weak tetragonal distortion. The redox behavior was studied by cyclic voltammetry and was compared with that observed for the free ligand.

The synthesis, crystal structure and electrochemical behavior of chromium(III) complex with a bidentate ligand are described. The ESR study suggests a weak tetragonal distortion. X-ray data and electronic spectra have been compared with DFT calculations.Figure optionsDownload as PowerPoint slideHighlights
► A one-pot synthesis of [Cr{(2,6-PhCO)2(4-Me)C6H2(O)3}] is reported.
► X-ray structure analysis confirmed meridional octahedral configuration.
► The ESR study suggests a weak tetragonal distortion.
► DFT-B3LYP/3-21 G method showed good correlation with the experimental X-ray and electronic spectral data.
► Cyclic voltammetric studies indicate two metal centered reductions on the electrode surface.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 43, Issue 1, 13 August 2012, Pages 8–14
نویسندگان
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