Solvent response to fluorine-atom reaction dynamics in liquid acetonitrile

Physical Chemistry Chemical Physics : PCCP
G T DunningA J Orr-Ewing

Abstract

Time-resolved infra-red (IR) absorption spectroscopy is used to follow the production of HF from the reaction of fluorine atoms in liquid acetonitrile (CH3CN). Photolysis of dissolved XeF2 using ∼50 fs duration, 267 nm laser pulses generates F atoms and XeF on prompt (sub-ps) timescales, as verified by broadband transient electronic absorption spectroscopy. The fundamental vibrational band of HF in solution spans more than 400 cm(-1) around the band centre at 3300 cm(-1), and analysis of portions of the time-resolved spectra reveals time constants for the rise in HF absorption that become longer to lower wavenumber. The time constants for growth of 40 cm(-1) wide portions of the IR spectra centred at 3420, 3320 and 3240 cm(-1) are, respectively, 3.04 ± 0.26, 5.48 ± 0.24 and 7.47 ± 0.74 ps (1 SD uncertainties). The shift to lower wavenumber with time that causes these changes to the time constants is attributed to evolution of the micro-solvation environment of HF following the chemical reaction. The initial growth of the high-wavenumber portion of the band may contain a contribution from relaxation of initially vibrationally excited HF, for which a time constant of 2.4 ± 0.2 ps is deduced from IR pump and probe spectroscopy of ...Continue Reading

References

Mar 11, 2006·Science·Minghui QiuDong H Zhang
Dec 17, 1993·Science·D E ManolopoulosD M Neumark
Mar 5, 2008·The Journal of Chemical Physics·François LiqueDavid J Nesbitt
May 27, 2010·Chemical Society Reviews·Biman Bagchi, Biman Jana
Dec 15, 2010·Applied Spectroscopy·Gregory M GreethamMichael Towrie
Mar 23, 2011·The Journal of Physical Chemistry. B·Rebecca A NicodemusAndrei Tokmakoff
May 14, 2011·Physical Chemistry Chemical Physics : PCCP·S J GreavesA J Orr-Ewing
Jul 5, 2011·The Journal of Chemical Physics·Rebecca A RoseAndrew J Orr-Ewing
Apr 14, 2012·Physical Chemistry Chemical Physics : PCCP·R A RoseA J Orr-Ewing
Jan 24, 2014·Nature Chemistry·Meryem TiznitiIan R Sims
Mar 13, 2014·The Journal of Chemical Physics·Andrew J Orr-Ewing
Jun 27, 2014·Physical Chemistry Chemical Physics : PCCP·Greg T DunningMichael Towrie
Jul 6, 2014·The Review of Scientific Instruments·Michael P GrubbMichael N R Ashfold
Oct 15, 2014·Physical Chemistry Chemical Physics : PCCP·Nicolai BorkHanna Vehkamäki

❮ Previous
Next ❯

Citations

Jan 27, 2016·The Journal of Physical Chemistry. a·Thomas J PrestonAndrew J Orr-Ewing
Dec 5, 2015·The Journal of Physical Chemistry. a·Daisuke KoyamaAndrew J Orr-Ewing
Jul 21, 2015·The Journal of Physical Chemistry. a·Greg T DunningAndrew J Orr-Ewing
Jan 4, 2017·The Journal of Physical Chemistry. a·Ashutosh Kumar, T Daniel Crawford
Jul 7, 2017·Chemical Society Reviews·Andrew J Orr-Ewing
Jan 31, 2019·Physical Chemistry Chemical Physics : PCCP·Xiaoyong Zhang, Jeremy N Harvey
Feb 9, 2021·Journal of Chemical Theory and Computation·Xiaoyong ZhangJeremy N Harvey

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.