The main-edge is sensitive to the oxidation state - a clear shift to higher energies with increasing oxidation state can be seen. This shift is smaller than the shift observed for the corresponding oxides, due to the lower electronegativity of nitrogen compared to oxygen, and corresponds to a ...
Silicon K-edge XANES spectra of silicate minerals 下载积分: 6990 内容提示: Phys Chem Minerals (1995) 22:115-122 PHNICS CHEMISTRY MINERALS ?9 Springer-Verlag 1995 Silicon K-edge XANES Spectra of Silicate Minerals Dien Li 1, G.M. Bancroft 1 M.E. Fleet 2, X.H. Feng 3 i Department of ...
For a series of Mn−Cl coordination complexes the chlorine K-edge X-ray absorption spectra (XAS) have been measured to probe chloride−manganese bonding. Results show that in a series of mononuclear (single Mn) compounds with Cl covalently bound to Mn, the intensity of the pre-edge featur...
K-edge XAS and ESCA spectra of 1– 3 show square-planar d 8-configuration in all cases and allow an inverse volcano-type correlation between ESCA chemical shifts and catalytic activity and selectivity. A mechanistic explanation with regard to the insertion step and the chain growth terminating ...
Among those, charge-transfer effects and the presence of vacancies are often suggested, based on the modification of similar XAS spectra with respect to that of undoped ZnO. We present here a critical re-examination of the reported O K-edge absorption in these materials, by comparing the ...
A systematic approach to quantitative analysis of Cl K-edge XAS spectra in ruthenium complexes is outlined and applied to ruthenium carbene complexes involved in olefin metathesis catalysis. This method is generally well-suited for probing ligand donor contributions into empty transition metal d orbitals...
b In 3 d XPS spectra and (c) O 1 s XPS spectra of Vac before and after CO2RR. d In K-edge XANES of Vac before and after CO2RR. e Calculated valance state by linear combination fitting of Vac before and after CO2RR. f FT-EXAFS spectra and (g) WT-EXAFS plots of Vac ...
The carbon K-edge absorption spectra of microcyrstalline C 70 have been measured using 270–330 eV synchrotron radiation and compared with that of a previously reported microcrystalline C 60 . The differences in the cage structure between the C 70 and C 60 fullerenes are clearly reflected in th...
The distinct parts of the X-ray absorption spectrum, namely the pre-edge region, the near edge (XANES) region, and the extended (EXAFS) region, provide complementary information about the local chemical environment of Cr. Analysis of the XANES and EXAFS spectra showed that the structure around...
Photoabsorption spectra of gaseous hydrides of 3p elements (PH3, H2S, HCl) are measured in the energy region of photoexcitations pertaining to K edge. The analysis of the edge profile is extended to hydrides of 4p series (GeH4, AsH3, H2Se, HBr) from an earlier experiment, and to publishe...