Issue 26, 2019

Photodissociation of CH2BrI using cavity ring-down spectroscopy: in search of a BrI elimination channel

Abstract

Photodissociation of CH2BrI was investigated in search of unimolecular elimination of BrI via a primary channel using cavity ring-down absorption spectroscopy (CRDS) at 248 nm. The BrI spectra were acquired involving the first three ground vibrational levels corresponding to A3Π1 ← X1Σ+ transition. With the aid of spectral simulation, the BrI rotational lines were assigned. The nascent vibrational populations for v′′ = 0, 1, and 2 levels are obtained with a population ratio of 1 : (0.58 ± 0.10) : (0.34 ± 0.05), corresponding to a Boltzmann-like vibrational temperature of 713 ± 49 K. The quantum yield of the ground state BrI elimination reaction is determined to be 0.044 ± 0.014. The CCSD(T)//B3LYP/MIDI! method was employed to explore the potential energy surface for the unimolecular elimination of BrI from CH2BrI.

Graphical abstract: Photodissociation of CH2BrI using cavity ring-down spectroscopy: in search of a BrI elimination channel

Supplementary files

Article information

Article type
Paper
Submitted
29 जून 2018
Accepted
06 अगस्त 2018
First published
07 अगस्त 2018

Phys. Chem. Chem. Phys., 2019,21, 13943-13949

Photodissociation of CH2BrI using cavity ring-down spectroscopy: in search of a BrI elimination channel

B. Muthiah, D. Paredes-Roibás, T. Kasai and K. Lin, Phys. Chem. Chem. Phys., 2019, 21, 13943 DOI: 10.1039/C8CP04130J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements