One-Photon Mass-Analyzed Threshold Ionization Spectroscopy (MATI) of trans-Dichloroethylene (trans-C₂H₂Cl₂): Cation Structure Determination via Franck−Condon Fit

Abstract

One-photon mass-analyzed threshold ionization (MATI) spectrum of trans-C 2 H 2 Cl 2 was obtained by using vacuum ultraviolet radiation generated by four-wave mixing in Kr. The ionization energy determined from the position of the 0-0 band in the spectrum was 9.6306 ( 0.0006 eV. Ten vibrational fundamentals for the cation were identified. The spectrum also displayed abundant overtones and combinations, most of which could be assigned adequately by comparing with the quantum chemical results. It was found that channel interaction was not important for this system. The equilibrium geometry of the cation was estimated through the Franck-Condon fit.

İki Farklı Tür ve Üç Farklı Formda Atık Yumurta Kabuğu Kullanılarak Ağır Metallerin (Bakır ve Kurşun) Uzaklaştırılması

“…When Figure 2(A) is investigated, the weak vibrational band at 788 cm -1 in Cu@CCJ was thought to arise as a result of the interaction of Cl between the surface of eggshell (Bae et al, 2006). The CH band at 802 cm -1 in the literature was seen as a weak band at 822 cm -1 in our study after treatment of copper aqueous solution (de Luna et al, 2015).…”

Photodissociation yield spectroscopy of vinyl bromide cation generated by mass-analyzed threshold ionization: Vibrational spectroscopy and decay dynamics in the B̃ state

“…More interesting is the fact that FWHM of 2.2 cm −1 for the 0-0 band is smaller than 20 cm −1 typically observed in the MATI spectra reported by this laboratory. [21][22][23][24]35 An explanation is as follows. The resolution in ZEKE/MATI is mostly determined by the energy spread of Rydberg states contributing to electrons and ions upon PFI.…”

“…17, 18 Hepburn performed ZEKE of simple molecules such as O 2 using vuv generated by four-wave sum frequency mixing in Kr, 19,20 while difference mixing in Kr was used to study various organic molecules in this laboratory. 8,21,22 A light source based on four-wave sum frequency mixing in Hg which generates vuv down to 103 nm ͑12.0 eV͒ is also used in this laboratory for MATI study of low-lying excited electronic states of aliphatic halides. 23,24 vuv from synchrotron radiation source has also been utilized for one-photon ZEKE/MATI.…”

The photoionization dynamics of the three structural isomers of dichloroethene

“…Higher resolution, laser-induced pulsed field ionisation-photoelectron and massanalysed threshold ionisation spectra have been reported for the trans-1,2 isomer [15,16]. There have been no studies, however, which combine the measurement of both photoelectrons and photoions under coincidence conditions.…”