RELAXATION EFFECTS IN FLUORINE K AUGER AND PHOTOELECTRON SPECTRA

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-247-C9-250
Author(s):  
O. BENKA ◽  
M. UDA
Keyword(s):  
Photoelectron Spectra ◽  
Relaxation Effects

Variable-Temperature Ultraviolet Photoelectron-Spectroscopy of the Keto-Enol Tautomers of Pentane-2,4-Dione

1987 ◽  
Vol 40 (3) ◽  
pp. 599 ◽  
Author(s):  
NS Hush ◽  
MK Livett ◽  
JB Peel ◽  
GD Willett
Keyword(s):  
Photoelectron Spectroscopy ◽  
Energy Region ◽  
Variable Temperature ◽  
Photoelectron Spectra ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Molecular Orbital Calculations ◽  
Electronic Relaxation ◽  
Relaxation Effects ◽  
Enol Tautomer ◽  
Scf Calculations

The HeI photoelectron spectra of pentane-2,4-dione measured at various temperatures have been subjected to a spectrum-stripping technique to enable isolation of the complete HeI photoelectron spectra of the keto and enol tautomers. The resulting spectrum-stripping coefficients allow evaluation of the enolization equilibrium constant at each temperature and subsequently the enthalpy of enolization. Interpretation of the photoelectron spectra is achieved with the use of ab initio molecular orbital calculations. Photoionization of non-bonding oxygen, and π -type electrons, contribute to the low ionization energy region of the spectrum, with a πCC < no- <πCO ordering for the enol tautpmer , and no- < no+ < πCO+ for the keto tautomer . Because of different electronic relaxation effects, ∆SCF calculations are required to predict correctly the observed πCC/no- spacing for the enol tautomer.

Observation of time dependent relaxation effects in the photoelectron spectra of some metal carbonyls

1977 ◽  
Vol 49 (1) ◽  
pp. 64-68 ◽  
Author(s):  
D.S. Rajoria ◽  
L. Kovnat ◽  
E.W. Plummer ◽  
W.R. Salaneck
Keyword(s):  
Photoelectron Spectra ◽  
Time Dependent ◽  
Metal Carbonyls ◽  
Relaxation Effects

scholarly journals Modification of Wood with Monoethanolamino-borate by The Data of X-Ray Photoelectron Spectroscopy

2018 ◽  
Vol 196 ◽  
pp. 04005
Author(s):  
Irina Stepina ◽  
Irina Kotlyarova
Keyword(s):  
Particle Size ◽  
Photoelectron Spectroscopy ◽  
Model Compound ◽  
Hydrolytic Stability ◽  
Photoelectron Spectra ◽  
Wood Cellulose ◽  
Rapid Loss ◽  
X Ray ◽  
Wood Protection ◽  
Cellulose Materials

The difficulty of wood protection from biocorrosion and fire is due to the fact that modifiers in use are washed out from the surface of the substrate under the influence of environmental factors. This results in a rapid loss of the protective effect and other practically important wood characteristics caused by the modification. To solve this problem is the aim of our work. Here, monoethanolaminoborate is used as a modifier, where electron-donating nitrogen atom provides a coordination number equal to four to a boron atom, which determines the hydrolytic stability of the compounds formed. Alpha-cellulose ground mechanically to a particle size of 1 mm at most was used as a model compound for the modification. X-ray photoelectron spectra were recorded on the XSAM-800 spectrometer (Kratos, UK). Prolonged extraction of the modified samples preceded the registration of the photoelectron spectra to exclude the fixation of the modifier molecules unreacted with cellulose. As a result of the experiment, boron and nitrogen atoms were found in the modified substrate, which indicated the hydrolytic stability of the bonds formed between the modifier molecules and the substrate. Therefore monoethanolaminoborate can be considered as a non-extractable modifier for wood-cellulose materials.

Additions and Corrections - Photoelectron Spectra of Open Chain C6H6Isomers

1976 ◽  
Vol 98 (8) ◽  
pp. 2371-2371
Author(s):  
Peter Bischof ◽  
Rolf Gleiter ◽  
Hennig Hopf ◽  
Frank Lenich
Keyword(s):  
Photoelectron Spectra ◽  
Open Chain
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