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Title:BROADBAND FTMW SPECTROSCOPY OF 2-METHYLIMIDAZOLE AND COMPLEXES WITH WATER AND ARGON
Author(s):Medcraft, Chris
Contributor(s):Walker, Nick; Mullaney, John C; Heitkämper, Juliane
Subject(s):Large amplitude motions, internal rotation
Abstract:The rotational spectrum of 2-methylimidazole has been measured using laser ablation chirped-pulse Fourier transform microwave spectroscopy from 2-18.5 GHz. 2-methylimidazole was laser vaporised then entrained within an argon buffer gas undergoing supersonic expansion allowing for efficient rotational cooling. Carbon-13 and nitrogen-15 isotopologues were measured in natural abundance and substitution coordinates have been determined. The barrier to internal rotation of the methyl group was found to be 122.697(20) cm$^{-1}$. Nuclear quadropole coupling constants for the two nitrogen nuclei were determined via a rigid rotor fit of the $A$ internal rotor state. Complexes with water and argon were also observed and fit in a similar way.
Issue Date:6/20/2017
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/97170
DOI:10.15278/isms.2017.TI01
Date Available in IDEALS:2017-07-27


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