Journal ArticleDOI
Valence Ionization Energies of Hydrocarbons
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In this paper, the experimental valence ionisation energies of 143 hydrocarbons, CnHm, have been determined from their He (IIα) (40.80 eV) and He (Iα)(21.22 eV)-excited photoelectron spectra.Abstract:
Experimental valence ionisation energies of 143 hydrocarbons, CnHm, have been determined from their He (IIα) (40.80 eV) and He (Iα) (21.22 eV) excited photoelectron spectra. Ionization energies, usually up to 26 eV are given in tabular form for 108 hydrocarbons with n≤6, together with their (tentative) assignment. The ionization energies up to approximately 25 eV, of 35 selected hydrocarbons with 7≤n≤10, are presented by means of their He (IIα) photoelectron spectra.read more
Citations
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Journal ArticleDOI
Towards bulk behaviour of long hydrogenated carbon chains
TL;DR: The dipole forbidden A 1Δu(1Σ−u)←X 1Σ+g transitions of the linear carbon chains HC2nH (n=3−7) were observed in the gas phase under supersonic molecular beam conditions as discussed by the authors.
Journal ArticleDOI
Evolution of structure and reactivity in a series of iconic carbenes.
TL;DR: A generally satisfactory analysis of major trends in the evolution of carbenic structure and reactivity is afforded by qualitative applications of frontier molecular orbital theory, although the observed entropies of activation appear to fall in a counterintuitive pattern.
Book ChapterDOI
Decay Processes of the Lowest Excited Electronic States of Polyatomic Radical Cations
TL;DR: In this article, the decay behavior of the lowest excited electronic states of radical cations of polyatomic molecules in the gas phase is described and a review of the techniques developed for such studies is presented.
Journal ArticleDOI
The ground and ionic states of cyclohepta-1,3,5-triene and their relationship to norcaradiene states: New 1H and 13C NMR spectra and analysis of a new experimental photoelectron spectrum by ab initio methods
Michael H. Palmer,R. Alan Aitken,Marcello Coreno,Monica de Simone,Cesare Grazioli,Søren Vrønning Hoffmann,Nykola C. Jones +6 more
TL;DR: The strong inter-relationship between cyclohepta-1,3,5-triene (CHT) and norcaradiene (NCD) systems observed in some reactions has been extended to include the energy surfaces for some low-lying ionic states, showing that while minima occurred for both state symmetries, curve crossing occurs in CS symmetry, which is avoided by distortion to C1 symmetry.
Journal ArticleDOI
Electron‐momentum‐specific valence‐shell electronic structures of cis‐, trans‐, and iso‐butene by symmetric noncoplanar (e,2e) spectroscopy
J. F. Ying,H. Zhu,C. P. Mathers,B. N. Gover,M. P. Banjavcic,Y. Zheng,C. E. Brion,Kam Tong Leung +7 more
TL;DR: In this article, electron-momentum-specific ionization energy (IE) spectra of cis, trans, and iso-butene were obtained from 8 to 44 eV ionisation energy using non-coplanar symmetric (e,2e) spectroscopy and compared with the corresponding photoelectron spectra obtained using monochromated synchrotron radiation at 100 eV photon energy.
References
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TL;DR: In this paper, Fock's Naherungsmethode zur Behandung des quantenmechanischen Mehrelektronenproblems aufgestellten Gleichungen werden auf etwas allgemeinerer Grundlage diskutiert.
Journal ArticleDOI
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Journal ArticleDOI
High resolution molecular photoelectron spectroscopy. III. Acetylenes and aza-acetylenes
C. Baker,D. W. Turner +1 more
TL;DR: In this paper, the spectra of the 584 A (21·22 eV) photoelectron were reported for the following linear unsaturated molecules: acetylene, dideutero-acetylene, hydrogen cyanide, deuterium cyanide and diacetylene.
Journal ArticleDOI
Ultra-violet photoelectron data on the complete valence shells of molecules recorded using filtered 30.4 nm radiation
TL;DR: In this paper, it was shown that in many molecules the summed binding energies of the molecular orbitals built from 2s atomic orbitals may be divided up into atomic contributions which agree in magnitude with those obtained for the same atoms in other molecules.
Journal ArticleDOI
High Resolution Molecular Photoelectron Spectroscopy. I. Fine Structure in the Spectra of Hydrogen and Oxygen
TL;DR: In this paper, a photo-electron spectrometer is described which uses focusing deflexion in a radial electrostatic field for energy analysis, and an over-all limit of about 0.002 eV is deduced as the smallest attainable line width in ordinary circumstances.