MICROWAVE SPECTROSCOPY OF BUTAN-2-OL - CONFORMATIONS, COMPLEXES AND CLUSTERS
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Date
2002
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Publisher
Ohio State University
Abstract
The first rotationally-resolved spectrum of a van der Waals complex formed between two chiral molecules will be presented. The complex is a hetero-chiral dimer of butan-2-ol and the spectrum was observed by Fourier Transform Microwave Spectroscopy in a supersonic $expansion^{a}$. The results of the ab initio calculations used to identify the dimer will also be presented. The microwave spectrum of a complex formed between a butan-2-ol molecule and an argon atom will also be discussed, including a limited amount of structural $analysis^{b}$. This too will be accompanied by an ab initio study. Finally, mention will be made of the detection of six of the nine possible conformational isomers of the butan-2-ol molecule in expansions of argon and $helium^{c}$. There are still a large number of unassigned lines in the spectrum of butan-2-ol, some of which must be due to the homo-chiral dimer. Work to assign them is ongoing, any new results will be presented.
Description
$^{a}$A. K. King and B. J. Howard Chem. Phys. Lett. 348(343), 2001. $^{b}$A. K. King and B. J. Howard J. Mol. Spectrosc., Submitted for publication. $^{c}$A. K. King and B. J. Howard J. Mol. Spectrosc. 201/1(38), 2001.
Author Institution: Physical and Theoretical Chemistry Department, University of Oxford
Author Institution: Physical and Theoretical Chemistry Department, University of Oxford