10-16 June 2018
Dalhousie University
America/Halifax timezone
Welcome to the 2018 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2018!

POS-3 Studying Medium-Sized Molecules in the Far-Infrared Spectral Region with the Canadian Light Source

12 Jun 2018, 18:00
1h 30m
SUB McInnes Hall (Dalhousie University)

SUB McInnes Hall

Dalhousie University

Poster (Graduate Student) / Affiche (Étudiant(e) du 2e ou 3e cycle) Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC) DAMOPC Poster Session & Finals: Poster Competition and Mingle Session with Industry Partners (8) / Employers | Session d'affiches DPAMPC et finales: Concours d'affiches et rencontres avec partenaires industriels et employeurs (8)


Mr Hanif Zarringhalam (Physics Department,University of New Brunswick)


Pyrrole and furan, two aromatic five-membered ring molecules, have been the subject of extensive ab initio and experimental studies. We have taken Fourier transform far-infrared spectra of these molecules at the Canadian Light Source. Two fully-entangled vibrational bands of furan, n8 and n21 at ~ 870 and 873 cm-1, that are present in the spectra show some perturbations and interact with each other via Coriolis coupling. In pyrrole, a weak c-type band, n13 at ~ 830 cm-1, is observed, in addition to two other vibrational modes of pyrrole, n9 and n10 at ~ 880 and 864 cm-1, that experience the same perturbation as do the bands of furan. We will discuss our analysis and attempts at deperturbation of these bands.

A larger related molecular system, Catechol, consists of a six-membered ring and two OH groups. The high-resolution rotation-vibration spectra of this molecule have never been taken. However, low-resolution data [1]show some vibrational transitions between ~ 450-4000 cm-1. Motivated by the potential applications of ring molecules in the field of molecular electronics, we decided to take high resolution spectra of Catechol at the Canadian Light source in Saskatchewan. Our progress in obtaining rotationally resolved vibrational spectra of Catechol will also be discussed.

[1] http://webbook.nist.gov/cgi/cbook.cgi?ID=C120809&Mask=80

Primary authors

Mr Hanif Zarringhalam (Physics Department,University of New Brunswick) Prof. Dennis Tokaryk (Physics Department,University of New Brunswick)

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