4-Bromobiphenyl: Long-lived molecular anion formation and competition between electron detachment and dissociation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00511860" target="_blank" >RIV/61388955:_____/19:00511860 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0302110" target="_blank" >http://hdl.handle.net/11104/0302110</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5082611" target="_blank" >10.1063/1.5082611</a>

Jazyk výsledku

angličtina

Název v původním jazyce

4-Bromobiphenyl: Long-lived molecular anion formation and competition between electron detachment and dissociation

Popis výsledku v původním jazyce

Electron attachment to the 4-bromobiphenyl molecule and the decay channels of its molecular anion were investigated by means of Dissociative Electron Attachment (DEA) spectroscopy with two different spectrometers. The first apparatus is equipped with a static magnet mass analyzer (Ufa group) and the second one with a quadrupole mass filter (Prague group). The dominant DEA channel at low electron energy leads to formation of Br- negative fragments. Long-lived (tau(a) = 40 mu s at the temperature of 80 X degrees C) molecular negative ions were detected only in the Ufa experiment. We explored the involved potential energy surfaces and found that the molecular anion has two distinct structures with the C-Br distances of 1.92 angstrom and 2.8 angstrom. The statistical model based on the Arrhenius approximation fully explains the experimental observations and sheds light on the earlier anion dissociation kinetic studies in solution. Published under license by AIP Publishing.

Název v anglickém jazyce

4-Bromobiphenyl: Long-lived molecular anion formation and competition between electron detachment and dissociation

Popis výsledku anglicky

Electron attachment to the 4-bromobiphenyl molecule and the decay channels of its molecular anion were investigated by means of Dissociative Electron Attachment (DEA) spectroscopy with two different spectrometers. The first apparatus is equipped with a static magnet mass analyzer (Ufa group) and the second one with a quadrupole mass filter (Prague group). The dominant DEA channel at low electron energy leads to formation of Br- negative fragments. Long-lived (tau(a) = 40 mu s at the temperature of 80 X degrees C) molecular negative ions were detected only in the Ufa experiment. We explored the involved potential energy surfaces and found that the molecular anion has two distinct structures with the C-Br distances of 1.92 angstrom and 2.8 angstrom. The statistical model based on the Arrhenius approximation fully explains the experimental observations and sheds light on the earlier anion dissociation kinetic studies in solution. Published under license by AIP Publishing.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA17-04844S" target="_blank" >GA17-04844S: Účinné průřezy a dynamika elektronového rozptylu na molekulárních systémech</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Chemical Physics

ISSN

0021-9606

e-ISSN

—

Svazek periodika

150

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

114304

Kód UT WoS článku

000462014500020

EID výsledku v databázi Scopus

2-s2.0-85063326291