Nuclear Spin Symmetry Conservation Studied for Symmetric Top Molecules (CH3D, CHD3, CH3F, and CH3Cl) in Supersonic Jet Expansions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00507582" target="_blank" >RIV/61388955:_____/19:00507582 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0298571" target="_blank" >http://hdl.handle.net/11104/0298571</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpca.9b02580" target="_blank" >10.1021/acs.jpca.9b02580</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nuclear Spin Symmetry Conservation Studied for Symmetric Top Molecules (CH3D, CHD3, CH3F, and CH3Cl) in Supersonic Jet Expansions

Popis výsledku v původním jazyce

We report results on nuclear spin symmetry conservation studied by high resolution spectroscopy of relative line intensities for the A and E nuclear spin isomers of symmetric top molecules CHD3, CH3D, CH3F, and (CH3Cl)-Cl-35 in supersonic jet expansions with He and Ar as carrier gases. Infrared absorption spectra were measured around 3000 cm(-1) by an infrared (lead salt) diode laser and a continuous wave IR-OPO (infrared optical parametric oscillator) locked to a frequency comb. A detailed analysis of the R(2)-line intensities of the CH-stretching fundamental shows that nuclear spin symmetry is conserved for CHD3, CH3F, and (CH3Cl)-Cl-35 during the expansion. For CH3D, a small contribution from nuclear spin symmetry relaxation cannot be excluded completely under our experimental conditions.

Název v anglickém jazyce

Nuclear Spin Symmetry Conservation Studied for Symmetric Top Molecules (CH3D, CHD3, CH3F, and CH3Cl) in Supersonic Jet Expansions

Popis výsledku anglicky

We report results on nuclear spin symmetry conservation studied by high resolution spectroscopy of relative line intensities for the A and E nuclear spin isomers of symmetric top molecules CHD3, CH3D, CH3F, and (CH3Cl)-Cl-35 in supersonic jet expansions with He and Ar as carrier gases. Infrared absorption spectra were measured around 3000 cm(-1) by an infrared (lead salt) diode laser and a continuous wave IR-OPO (infrared optical parametric oscillator) locked to a frequency comb. A detailed analysis of the R(2)-line intensities of the CH-stretching fundamental shows that nuclear spin symmetry is conserved for CHD3, CH3F, and (CH3Cl)-Cl-35 during the expansion. For CH3D, a small contribution from nuclear spin symmetry relaxation cannot be excluded completely under our experimental conditions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

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 Physical Chemistry A

ISSN

1089-5639

e-ISSN

—

Svazek periodika

123

Číslo periodika v rámci svazku

29

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

6160-6174

Kód UT WoS článku

000477785700010

EID výsledku v databázi Scopus

2-s2.0-85070658715