# MOLECULAR CONFORMATION OF METHAMPHETAMINE

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/20473

Files Size Format View
2002-RD-10.jpg 179.8Kb JPEG image

 Title: MOLECULAR CONFORMATION OF METHAMPHETAMINE Creators: Lavrich, R. J.; Suenram, R. D.; Tubergen, Michael J. Issue Date: 2002 Publisher: Ohio State University Abstract: We report the rotational spectrum of the normal species of methamphetamine and its $^{15}N$ isotopomer. For the normal isotopomer, $A = 2121.7117(7) MHz, B = 613.2416(1) MHz$, and $C = 575.5221(2) MHz$. Assignment of the resulting nuclear quadrupole hyperfine structure for the normal species results in, $X = 1.080(4)$ MHz and $X_{bb} = 2.623(2)$ MHz. Ongoing ab initio calculations at the MP2/6-31G(d,p) level have resulted in six minima on the potential energy surface. In these calculations, the lowest energy conformations have the amide proton oriented towards the phenyl ring. Coordinates of the nitrogen atom calculated from a preliminary least-squares-fit of the microwave data and subsequent Kraitchman analysis are in good agreement with one another and are consistent with the lowest energy ab initio structure. Description: Author Institution: Optical Technology Division, National Institute of Standards and Technology; Department of Chemistry, Kent State University URI: http://hdl.handle.net/1811/20473 Other Identifiers: 2002-RD-10