Morgan McCabe

Date of Award

2014

Document Type

Thesis

Degree Name

Bachelors

Department

Natural Sciences

First Advisor

Shipman, Steven

Keywords

Chemistry, Microwave Spectroscopy

Area of Concentration

Chemistry

Abstract

The microwave spectra of 3-methoxypropylamine, 2-aminobutanol, and allyl bromide were recorded. The spectrum of allyl bromide was taken from 8.7-26.5 GHz at 253 K. The rotational spectrum of allyl bromide has been previously studied; however, previous assignments only extended to J = 12 and Ka = 1 for the ground state and J = 15 and Ka = 1 for vibrationally excited states. The fits were extended to J= 21 and K a = 5, for the ground state and 2 vibrationally excited states. Additionally, the spectra of methoxypropylamine and aminobutanol were taken on a molecular beam instrument from 8.0-18.0 GHz at 2 K, due to issues with amine decomposition in the waveguide. The rotational spectra of these molecules have not been previously studied. The ground state spectrum was fit for both molecules, though, there are still many lines left to assign in the methoxypropylamine spectrum. Finally, Gaussian 09 was used to find the lowest energy conformers for methoxypropylamine, ethoxy- ethylamine, and aminobutanol, as well as to estimate rotational constants, distortion constants, and hyperfine constants.

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