Journal ArticleDOI
Carbon K‐shell excitation of gaseous and condensed cyclic hydrocarbons: C3H6, C4H8, C5H8, C5H10, C6H10, C6H12, and C8H8
Adam P. Hitchcock,D. C. Newbury,I. Ishii,Joachim Stöhr,J. A. Horsley,R. D. Redwing,A. L. Johnson,F. Sette +7 more
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In this article, the carbon K-shell excitation spectra of gaseous cyclic hydrocarbons, both saturated and unsaturated, have been recorded by electron energy loss spectroscopy under dipole-dominated conditions.Abstract:
The carbon K‐shell excitation spectra of gaseous cyclic hydrocarbons, both saturated (cyclopropane, cyclobutane, cyclopentane, cyclohexane) and unsaturated (cyclopentene, cyclohexene, and cyclooctatetraene), have been recorded by electron energy loss spectroscopy under dipole‐dominated conditions. These are compared to the NEXAFS spectra of multilayers and monolayers of C4H8, C5H8, C6H12, and C8H8 on Pt(111). Multiple scattering Xα calculations of the spectra of cyclopropane, cyclobutane, and cyclohexane are also reported. In most cases the gas and solid spectra are essentially the same indicating that intramolecular transitions dominate in the condensed phase. The NEXAFS polarization dependence of the condensed phases has assisted spectral assignments and the determination of the molecular orientation in the monolayer phase. In the saturated species a sharp feature about 3 eV below the carbon 1s ionization threshold is identified as a transition to a state of mixed Rydberg/valence character with the π*(C...read more
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Diamond-like amorphous carbon
TL;DR: In this paper, the authors describe the deposition methods, deposition mechanisms, characterisation methods, electronic structure, gap states, defects, doping, luminescence, field emission, mechanical properties and some applications of diamond-like carbon.
Journal ArticleDOI
Characterization of amorphous and nanocrystalline carbon films
Paul K. Chu,Liuhe Li +1 more
TL;DR: In this paper, the structures of various types of amorphous carbon films and common characterization techniques are described, which can be classified as polymer-like, diamond-like or graphite-like based on the main binding framework.
Journal ArticleDOI
NEXAFS investigations of transition metal oxides, nitrides, carbides, sulfides and other interstitial compounds
TL;DR: In this article, the authors review applications of the near-edge X-ray absorption fine structure (NEXAFS) technique in the investigations of electronic and structural properties of transition metal compounds.
Journal ArticleDOI
High-pressure catalytic reactions over single-crystal metal surfaces
TL;DR: In this article, the effects of both electronegative (S and P) and electropositive (alkali metals) impurities upon the catalytic activity of metal single crystals for ammonia synthesis, CO methanation, alkane hydrogenolysis, ethylene epoxidation and water-gas shift are discussed.
Journal ArticleDOI
X-ray absorption near-edge structure (XANES) spectroscopy
TL;DR: X-ray absorption near-edge structure (XANES) spectroscopy using synchrotron radiation is a well-established technique providing information on the electronic, structural and magnetic properties of matter as discussed by the authors.
References
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Book
Higher Excited States of Polyatomic Molecules
TL;DR: In this article, higher excited states of polyatomic molecules are used to take advantage of limited budget to make more knowledge even in less time every day, which is a good alternative to do in getting desirable knowledge and experience.
Book ChapterDOI
Scattered-Wave Theory of the Chemical Bond
TL;DR: In the self-consistent field (SCF)-Xα scattered-wave model that is also a first-principle technique, there is no basis set problem because Schrodinger's equation for an Xα potential is numerically integrated as discussed by the authors.
Book
Chemistry and physics of solid surfaces
Ralf Vanselow,Russell Howe +1 more
TL;DR: This volume contains review articles which were written by the invited speak- ers of the Sixth International Summer Institute in Surface Science (ISISS), held at the University of Wisconsin-Milwaukee in August 1983.
Journal ArticleDOI
Molecular Spectroscopy by Means of ESCA III. Carbon compounds
Ulrik Gelius,P.-F. Hedén,J. Hedman,B J Lindberg,Rolf Manne,R. Nordberg,Carl Nordling,Kai Siegbahn +7 more
TL;DR: In this article, the binding energy shifts of aliphatic saturated compounds, carbonyl compounds, and some aromatic compounds were measured by ESCA and compared with results of semi-empirical and ab initio molecular orbital calculations on free molecules.
Journal ArticleDOI
Ultraviolet Photoionization Cross Sections for N 2 and CO
TL;DR: In this paper, the authors calculated ultraviolet photoionization cross sections for CO and CO in the gas phase and the differential cross-sections for oriented molecules, and found distinctive angular distributions which could be used to identify levels or determine the bond geometry of molecules adsorbed at surfaces.