ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Metal oxidation state effect in photoionization of gas-phase metal halides (1995)

Stranges, S. ; Adam, M. Y. ; de Simone, M. ; [et al.]

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 102 (1995), S. 3555-3565

add to mindlist on the mindlist

Details

ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: The full-valence photoelectron (PE) spectrum of SnCl4 excited by synchrotron radiation in the ultraviolet (UV) region is reported here for the first time, and compared with the analogous spectrum of SnCl2 previously published. Electron correlation effects in the different valence spectral regions are experimentally and theoretically analyzed for both tin chlorides. The theoretical results are obtained at ab initio 2h-1p CI level. Total-ion-yield (TIY) spectra excited by synchrotron radiation are obtained for both molecules in the Sn 4d−1 thresholds region for the first time. Sn 4d excited states in the two chlorides are hence identified through the resonant features displayed by the TIY spectra. The assignment is in good qualitative agreement with the excitation energies and oscillator strengths calculated at ab initio CI level. Clear differences exhibited by both PE and TIY spectra reported in this work originate from the different metal oxidation state in the two apparently similar chlorides, or equivalently, from the different involvement of the valence atomic orbitals of tin to form the chemical bonds of the molecule. Inner-valence ionizations in the investigated molecules are shown to be a sensitive probe of the halogen chemical environment, being related to the Sn–Cl bond polarization.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.468579

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

The gas-phase photoemission beamline at Elettra (1998)

Prince, K. C. ; Blyth, R. R. ; Delaunay, R. ; [et al.]

Chester : International Union of Crystallography (IUCr)

Journal of synchrotron radiation 5 (1998), S. 565-568

add to mindlist on the mindlist

Details

ISSN: 1600-5775

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Geosciences , Physics

Notes: This paper reports the present stage of commissioning of the gas-phase photoemission beamline at Elettra, Trieste. The beamline is designed for atomic and molecular science experiments with high-resolution and high-flux synchrotron radiation. It consists of an undulator source, variable-angle spherical-grating monochromator and two experimental stations. The design value of the energy range is 20 to 800 eV with a specified resolving power of over 10000. The procedure adopted for calibration of this type of monochromator is discussed. At present a resolving power up to 20000 and a range up to 900 eV have been measured. Absorption spectra taken at the argon LII,III-edge and at the nitrogen, oxygen and neon K-edges are as sharp as, or sharper than, any reported in the literature. The instrumental broadening is well below the natural line-width making it difficult to quantify the resolution; this problem is discussed.