Microwave Spectrum And Geometry Of Cf3i…ph3

Stephens, Susanna Louise

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https://hdl.handle.net/2142/51060 Copy

Description

Title

Microwave Spectrum And Geometry Of Cf3i…ph3

Author(s)

Stephens, Susanna Louise

Contributor(s)

• Legon, Anthony
• Walker, Nick

Issue Date

2014-06-20

Keyword(s)

Chirped pulse

Abstract

A chirped-pulse Fourier transform microwave spectrometer has been used to measure the microwave spectrum of $\mathrm{CF_{3}I \cdots PH_{3}}$ between 6.5 and 18.5 GHz. The complex was stabilised by supersonic expansion of a gas sample containing small percentages of $\mathrm{CF_{3}I}$ and $\mathrm{PH_{3}}$ in a balance of 6 bar of argon. The observed spectrum is consistent with a $C_{3\mathrm{v}}$ prolate symmetric top structure which displays evidence for internal rotation of the $\mathrm{PH_{3}}$ subunit about the principal axis. Over two hundred hyperfine transitions across eleven $J''\leftarrow J'$ transitions have been assigned to the internal rotor $A$-state allowing the rotational ($B_{0}$) and centrifugal distortion ($D_{J}$ and $D_{JK}$) constants as well as the nuclear electric quadrupole coupling constant of iodine ($\chi_{aa}$(I)) to be assigned for this state. For the $E$-state, the additional distortion terms $D_{Jm}$ and $D_{JKm}$ have been determined. The length of the halogen bond between the iodine and phosphorus atoms and the force constant of this bond have also been determined.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/51060

DOI

https://doi.org/10.15278/isms.2014.FD10

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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