| 1. |
|
|
| 2. |
- Gelius, Ulrik, et al.
(författare)
-
ESCA studies of molecular core and valence levels in the gas phase
- 1972
-
Ingår i: Faraday Discussions of the Chemical Society. - : Royal Society of Chemistry (RSC). - 0301-7249. ; 54, s. 257-268
-
Tidskriftsartikel (refereegranskat)abstract
- The study of molecules in the gas phase by ESCA offers several advantages. Particularly, the opportunity to make direct comparisons between theoretical and experimental results is of importance. From such comparisons a more complete understanding of several fundamental phenomena in ESCA has been gained. The present paper reviews some recent work in Uppsala along this line. The effect of electron reorganization on core binding energies in atoms and molecules is analyzed. Chemical shifts in ESCA and n.m.r. are discussed. The existence of a general relation involving these chemical shifts and nuclear spin-rotation constants is pointed out. A model for analyzing ESCA intensities of the valence electrons in molecules is presented. It is shown that the analysis may be useful in identifying the molecular orbitals.For most applications of ESCA it is highly desirable to improve the resolution and the intensity. An instrument, particularly designed to achieve this for gases, is discussed. It can also handle solid samples. It makes use of a high-emission, fine-focus electron gun, a rotating anode and a double focusing quartz crystal. The first electron spectrum recorded with this new instrument is presented.
|
|
| 3. |
- Hamrin, Kjell, et al.
(författare)
-
Ionization energies in methane and ethane measured by means of ESCA
- 1968
-
Ingår i: Chemical Physics Letters. - : Elsevier BV. - 0009-2614 .- 1873-4448. ; 1:13, s. 613-615
-
Tidskriftsartikel (refereegranskat)abstract
- Ionization energies for the molecular orbitals in methane and ethane are obtained by means of the ESCA technique. In methane the 2a(1) electrons are found at a binding energy of 23.1 eV: in ethane the 2a(1) level is split up in two levels due to the interaction between the carbon atoms.
|
|
| 4. |
- Hamrin, Kjell, et al.
(författare)
-
Structure studies of sulphur compounds by ESCA
- 1968
-
Ingår i: Chemical Physics Letters. - 0009-2614 .- 1873-4448. ; 1:11, s. 557-559
-
Tidskriftsartikel (refereegranskat)abstract
- Results, obtained by means of the ESCA-technique (Electron Spectroscopy for Chemical Analysis), are reported on the correlation between the binding energy of the inner electrons of sulphur and the chemical state and environment, with particular emphasis on the sulphur-oxygen bond. A charge-binding energy correlation is established which can be used for the estimation of charge on sulphur in compounds with uncertain structure or composition.
|
|
| 5. |
|
|
| 6. |
|
|
