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- W2003576827 abstract "The structural details of [Cu(dmp)2]+ (dmp = 2,9-dimethyl-1,10-phenanthroline) at its metal-to-ligand charge-transfer (MLCT) excited-state in acetonitrile were extracted using quantitative analysis of Cu K-edge X-ray adsorption near edge structure (XANES). The study combines two techniques: fitting experimental XANES spectra with a multidimensional interpolation approximation, and calculating theoretical XANES spectra with molecular potentials beyond the muffin-tin approximation. The results of the study show that the best fit of the experimental XANES data must include a solvent molecule binding to the Cu with a short Cu−N distance of 2.00 Å. This confirms that the formation of an exciplex is responsible for the excited-state quenching in coordinating solvents, such as acetonitrile. Moreover, the calculations suggest that the formation of this exciplex state is accompanied by significant rocking distortions of the dmp ligands resulting in a 108° angle between the N(solvent)−Cu bond and the C2 symmetry axis of the dmp ligand. This combined approach allows us to extract molecular configurations that would otherwise be missed in a conventional qualitative XANES analysis." @default.
- W2003576827 created "2016-06-24" @default.
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- W2003576827 date "2008-05-28" @default.
- W2003576827 modified "2023-10-02" @default.
- W2003576827 title "Three-Dimensional Local Structure of Photoexcited Cu Diimine Complex Refined by Quantitative XANES Analysis" @default.
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- W2003576827 doi "https://doi.org/10.1021/jp801410a" @default.
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