Millimeter wavelength measurements of the rotational spectrum of 2-aminoethanol
نویسندگان
چکیده
Aminoethanol is a predicted precursor to the amino acid alanine in the interstellar medium and is therefore of great interest for observational studies. However, previous work involving the rotational spectrum of this molecule is limited to centimeter wavelengths and additional laboratory work is necessary to support astronomical heterodyne spectroscopy. This work presents the Doppler-limited rotational spectrum of aminoethanol measured in selected regions between 72 and 305GHz. Measurements of ground state and m27 transitions have been extended up to J 1⁄4 51 and J 1⁄4 43, respectively. Additional rotational transitions were assigned for the m25, m26, m25 þ m27, 2m27 and m26 þ m27 hot bands, resulting in improved rotational and centrifugal distortion constants for these states. 2003 Elsevier Science (USA). All rights reserved.
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