Experimental investigation of the electronic structures of enneacarbonylbis(.mu.3-X-methylidyne)triiron complexes (X = H, F, Cl, Br) by means of He I/He II gas-phase UV photoelectron spectroscopy

1993 ◽  
Vol 32 (8) ◽  
pp. 1383-1388 ◽  
Author(s):  
M. Casarin ◽  
A. Gulino ◽  
D. Lentz ◽  
H. Michael-Schulz ◽  
A. Vittadini
Keyword(s):  
Experimental Investigation ◽  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Electronic Structures ◽  
Uv Photoelectron Spectroscopy

Study of Sulfur-Sulfur Nonbonded Interactions in Substituted Diphosphine Disulfides by Gas-Phase UV Photoelectron Spectroscopy

1981 ◽  
Vol 36 (1) ◽  
pp. 68-71
Author(s):  
Lucilla Alagna ◽  
Carla Cauletti ◽  
Marco Andreocci ◽  
Claudio Furlani ◽  
Gerhard Hagele
Keyword(s):  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Photoelectron Spectra ◽  
Coupling Mechanism ◽  
Nonbonded Interactions ◽  
Lone Pairs ◽  
Uv Photoelectron Spectroscopy

Ultraviolet photoelectron spectra (UPS) of tetrasubstituted diphosphine disulfides RR'P(S)- P(S)RR' exhibit peculiar 1:2:1 splitting patterns in the region 7.5-9.5 eV for which a throughbond coupling mechanism between the sulfur lone pairs lying in the PPS planes is proposed. Further bond orbitals are related to bands at higher I. E. in the UP spectra

The Hei and HeH Photoelectron Spectra of [Fe*?3-C3H5(CO)3X] and [Fe^3-C4H7 (CO)3X] (X = Cl, Br, I) and [CoC3H5(CO)3]

1982 ◽  
Vol 37 (2) ◽  
pp. 179-185 ◽  
Author(s):  
Jaap N. Louwen ◽  
Jaap Hart ◽  
Derk J. Stufkens ◽  
Ad Oskam
Keyword(s):  
Photoelectron Spectroscopy ◽  
Electronic Structures ◽  
Lone Pair ◽  
Iron Complexes ◽  
Photoelectron Spectra ◽  
Pair Type ◽  
Ionization Energies ◽  
Uv Photoelectron Spectroscopy

Abstract By means of UV photoelectron spectroscopy (UPS) the electronic structures of [Feη3.C3H5(CO)3X], [Feη3-(2-CH3C3H4)(CO)3X] (X = Cl, Br, I) and [Co(C3H5)(CO)3] have been studied. Detailed assignments are possible and surprisingly low ionization energies (as low as 8.19 eV) are found for iodine lone pair type Orbitals. From the spectra a large difference in π backbonding is found between the cobalt and iron complexes

Recent Studies on Flash Vacuum Thermolysis in Tandem with UV-Photoelectron Spectroscopy and Quantum Calculations

2014 ◽  
Vol 67 (9) ◽  
pp. 1166 ◽  
Author(s):  
Anna Chrostowska ◽  
Stanisław Leśniak
Keyword(s):  
Experimental Data ◽  
Electronic Structure ◽  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Quantum Calculations ◽  
Fundamental Information ◽  
Spectroscopic Characterisation ◽  
Uv Photoelectron Spectroscopy ◽  
Unambiguous Interpretation

Flash vacuum thermolysis (FVT) is a particular method that allows the synthesis of stable compounds or the generation of short-lived species. Its coupling with spectroscopic characterisation provides very useful tools for mechanistic investigations. One of the most efficient and especially well suited techniques for this purpose is ultraviolet–photoelectron spectroscopy (UV-PES), which in tandem with FVT provides the ionisation energies of in situ formed molecules in the gas phase. The experimental data thus obtained in real-time are supported by quantum chemical calculations for consistency of the assignments of PES spectra and constitute fundamental information about electronic structure and bonding. The FVT/UV-PES technique has been known for more than 40 years, but one advantage in the present age is the greater confidence in electronic structure computations for predicting ionisation energies, thus providing the necessary tool for unambiguous interpretation of experimental data. This mini-review aims to give some representative, original examples, chosen from a French–Polish collaboration that illustrates the efficiency and wide applicability of the FVT/UV-PES tandem methodology. The selected examples on the FVT of thione and imine derivatives will be presented.

Gas-Phase Characterization of an Unhindered Germaimine by UV-Photoelectron Spectroscopy

1999 ◽  
Vol 1999 (7) ◽  
pp. 1151-1153 ◽  
Author(s):  
Séverine Foucat ◽  
Thierry Pigot ◽  
Geneviève Pfister-Guillouzo ◽  
Stéphane Mazières ◽  
Hélène Lavayssière
Keyword(s):  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Phase Characterization ◽  
Uv Photoelectron Spectroscopy
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