The pure rotational spectrum of LiCH3 ( X̃ 1A )

M. D. Allen; T. C. Pesch; J. S. Robinson; A. J. Apponi; D. B. Grotjahn; L. M. Ziurys

doi:10.1016/S0009-2614(98)00810-0

The pure rotational spectrum of LiCH₃ ( X̃ ¹A )

M. D. Allen, T. C. Pesch, J. S. Robinson, A. J. Apponi, D. B. Grotjahn, L. M. Ziurys

Chemistry and Biochemistry

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Abstract

The pure rotational spectrum of lithium monomethyl, LiCH₃, in its X̃ ¹A ground electronic state has been measured using millimeter/sub-millimeter direct absorption techniques. Spectra of LiCD₃ and ⁶LiCH₃ have been recorded as well. These species were synthesized in the gas phase by the reaction of lithium vapor, produced in a Broida-type oven, and (CH₃)₄Sn, (CH₃)₂Hg or CH₃I. Transitions were recorded in the 90-505 GHz range for J=2←1 to J=11←10 and K=0 up to K=10. Rotational and centrifugal distortion constants have been determined for each isotopomer, as well as an r_o structure for LiCH₃.

Original language	English (US)
Pages (from-to)	397-404
Number of pages	8
Journal	Chemical Physics Letters
Volume	293
Issue number	5-6
DOIs	https://doi.org/10.1016/S0009-2614(98)00810-0
State	Published - Sep 4 1998

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ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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Allen, M. D., Pesch, T. C., Robinson, J. S., Apponi, A. J., Grotjahn, D. B., & Ziurys, L. M. (1998). The pure rotational spectrum of LiCH₃ ( X̃ ¹A ). Chemical Physics Letters, 293(5-6), 397-404. https://doi.org/10.1016/S0009-2614(98)00810-0

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abstract = "The pure rotational spectrum of lithium monomethyl, LiCH3, in its {\~X} 1A ground electronic state has been measured using millimeter/sub-millimeter direct absorption techniques. Spectra of LiCD3 and 6LiCH3 have been recorded as well. These species were synthesized in the gas phase by the reaction of lithium vapor, produced in a Broida-type oven, and (CH3)4Sn, (CH3)2Hg or CH3I. Transitions were recorded in the 90-505 GHz range for J=2←1 to J=11←10 and K=0 up to K=10. Rotational and centrifugal distortion constants have been determined for each isotopomer, as well as an ro structure for LiCH3.",

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AU - Pesch, T. C.

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AU - Grotjahn, D. B.

AU - Ziurys, L. M.

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AB - The pure rotational spectrum of lithium monomethyl, LiCH3, in its X̃ 1A ground electronic state has been measured using millimeter/sub-millimeter direct absorption techniques. Spectra of LiCD3 and 6LiCH3 have been recorded as well. These species were synthesized in the gas phase by the reaction of lithium vapor, produced in a Broida-type oven, and (CH3)4Sn, (CH3)2Hg or CH3I. Transitions were recorded in the 90-505 GHz range for J=2←1 to J=11←10 and K=0 up to K=10. Rotational and centrifugal distortion constants have been determined for each isotopomer, as well as an ro structure for LiCH3.

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10.1016/S0009-2614(98)00810-0