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Spectrochemical Properties of Noncubic Transition Metal complexes in Solutions. XVI. Angular Overlap Treatments of cis-Bis(2,2'-bipyridyl)oxalatechromium(III) Iodide in Aqueous Solution

Kurzak K., Biernacki K.

Polish Journal of Chemistry

2004

Vol. 78 / nr 5

673-679

The electronic absorption spectrum of cis-[Cr(ox)(bpy)2]I (bpy = 2,2_-bipyridyl; ox = oxalate ion) of aqueous (H2O) solution, has been measured at room temperature and interpreted using the angular overlap model (AOM), and assuming C2v as the effective symmetry. All the experimental transitions are derived from Gaussian analysis of the solution spectrum. The calculations of the ligand field parameters take into account all the transitions, which are required from the ligand field theory (except those energetically higher than the range of the measured spectrum). The coordination

Spectrochemical properties of Noncubic transition Metal Complexes in Solutions. XVII. Angular Overlap Treatment of cis-Bis(2,2'-bipyridyl)malonatechromium(III) Iodide in Aqueous Solution

Kurzak K., Biernacki K.

Polish Journal of Chemistry

2004

Vol. 78 / nr 5

681-686

Amixed ligands chromium(III) complex with bidentate ligands: 2,2_-bipyridyl (bpy) and malonic acid deprotonated (mal-, malonate ion), has been synthesized, investigated and characterized structurally and spectroscopically. Electronic spectra of this complex were recorded in an aqueous solution at room temperature. The 'poor' experimental contours were resolved into the component bands by Gaussian analysis. The spectra were interpreted using C2v symmetry. The resolved spectra have been treated using an angular overlap model (AOM). The effect of _- and _-bonding of the bidentate ligands upon the chromium(III) ion in aqueous solution was described and discussed.

Angular Overlap Treatment of cis-Dichlorobis(1,10-phenanthroline)chromium(III) Chloride Dihydrate in Aqueous Solution

Kurzak K., Biernacki K.

Polish Journal of Chemistry

2002

Vol. 76 / nr 4

503-509

Low-symmetry mixed-ligands cis-[CrCl2(phen)2]Cl complex (phen = 1,10-phenanthroline) has been characterized spectroscopically. Electronic spectrum of aqueous solution of this complex has been measured at room temperature and interpreted using the angular overlap model (AOM), and assuming C2v symmetry. All the experimental transition energies are derived from Gaussian analysis of the solution spectrum. The calculations of the ligand-field parameters take into account all the transitions, which are required in the ligand-field theory (except those energetically higher than the range of the measured spectrum).