Microwave spectrum of the ethanol-methanol dimer

Finneran, Ian A.

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https://hdl.handle.net/2142/91504 Copy

Description

Title

Microwave spectrum of the ethanol-methanol dimer

Author(s)

Finneran, Ian A.

Contributor(s)

• Blake, Geoffrey
• Mead, Griffin
• Carroll, Brandon

Issue Date

2016-06-21

Keyword(s)

Clusters/Complexes

Date of Ingest

2017-01-26T21:37:50Z

Abstract

The hydrogen bond donor/acceptor competition in mixed alcohol clusters remains a fundamental question in physical chemistry. Previous theoretical work on the prototype ethanol-methanol dimer has been inconclusive in predicting the energetically preferred structure. Here, we report the microwave spectrum of the ethanol-methanol dimer between 8-18 GHz, using a chirped pulse Fourier transform microwave spectrometer. With the aid of ab initio calculations, 36 transitions have been fit and assigned to a t-ethanol-acceptor, methanol-donor structure in an argon-backed expansion. In a helium-backed expansion, a second excited conformer has been observed, and tentatively assigned to a g-ethanol-acceptor, methanol-donor structure. No ethanol-donor, methanol-acceptor structures have been found, suggesting such structures are energetically disfavored.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Genre of Resource

Conference Paper / Presentation

Language

En

Permalink

http://hdl.handle.net/2142/91504

Copyright and License Information

Copyright 2016 by the authors

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