Infrared Spectroscopy of the Tropyl Radical in Helium Droplets

Kaufmann, Matin; Leicht, Daniel; Havenith, Martina; Broderick, Bernadette M.; Douberly, Gary E.

doi:10.1021/acs.jpca.6b06522

Title: Infrared Spectroscopy of the Tropyl Radical in Helium Droplets

Abstract

Here, the infrared spectrum of the $$\tilde{X}$$²E₂" tropyl radical has been recorded in the range of the CH-stretch vibrational modes using the helium droplet isolation technique. Two bands are observed at 3053 and 3058 cm^–1. The electronic degeneracy of the ground state results in a Jahn–Teller interaction for two of the CH-stretch modes, i.e., first-order interaction for E₃' symmetry modes and second-order interaction for E₂' symmetry modes. The experimentally observed bands are assigned to the E₁' and E₃' CH-stretch modes. The E₁' mode is infrared-active, whereas the E₃' mode is inactive in the absence of the Jahn–Teller interaction. The transition to the upper component of the Jahn–Teller split E₃' mode gains intensity via vibronic coupling, giving rise to the second experimentally observed band.

Authors:

Kaufmann, Matin ^[1]; Leicht, Daniel ^[1]; Havenith, Martina ^[1]; Broderick, Bernadette M. ^[2];

^[2]

Ruhr-Univ. Bochum, Bochum (Germany)
Univ. of Georgia, Athens, GA (United States)

Publication Date:: Tue Aug 16 00:00:00 EDT 2016

Research Org.:: Univ. of Georgia, Athens, GA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1409059

Grant/Contract Number:: SC0008086

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory

Additional Journal Information:: Journal Volume: 120; Journal Issue: 34; Journal ID: ISSN 1089-5639

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Kaufmann, Matin, Leicht, Daniel, Havenith, Martina, Broderick, Bernadette M., and Douberly, Gary E. Infrared Spectroscopy of the Tropyl Radical in Helium Droplets.  United States: N. p., 2016. 
Web.  doi:10.1021/acs.jpca.6b06522.

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                    Kaufmann, Matin, Leicht, Daniel, Havenith, Martina, Broderick, Bernadette M., & Douberly, Gary E. Infrared Spectroscopy of the Tropyl Radical in Helium Droplets.  United States.  https://doi.org/10.1021/acs.jpca.6b06522

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                    Kaufmann, Matin, Leicht, Daniel, Havenith, Martina, Broderick, Bernadette M., and Douberly, Gary E. Tue .  
"Infrared Spectroscopy of the Tropyl Radical in Helium Droplets".  United States.  https://doi.org/10.1021/acs.jpca.6b06522.  https://www.osti.gov/servlets/purl/1409059.

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@article{osti_1409059,

  title        = {Infrared Spectroscopy of the Tropyl Radical in Helium Droplets},

  author       = {Kaufmann, Matin and Leicht, Daniel and Havenith, Martina and Broderick, Bernadette M. and Douberly, Gary E.},

  abstractNote = {Here, the infrared spectrum of the $\tilde{X}$2E2" tropyl radical has been recorded in the range of the CH-stretch vibrational modes using the helium droplet isolation technique. Two bands are observed at 3053 and 3058 cm–1. The electronic degeneracy of the ground state results in a Jahn–Teller interaction for two of the CH-stretch modes, i.e., first-order interaction for E3' symmetry modes and second-order interaction for E2' symmetry modes. The experimentally observed bands are assigned to the E1' and E3' CH-stretch modes. The E1' mode is infrared-active, whereas the E3' mode is inactive in the absence of the Jahn–Teller interaction. The transition to the upper component of the Jahn–Teller split E3' mode gains intensity via vibronic coupling, giving rise to the second experimentally observed band.},

  doi          = {10.1021/acs.jpca.6b06522},

  journal      = {Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory},

  number       = 34,

  volume       = 120,

  place        = {United States},

  year         = {Tue Aug 16 00:00:00 EDT 2016},

  month        = {Tue Aug 16 00:00:00 EDT 2016}

}

Copy to clipboard

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https://doi.org/10.1021/acs.jpca.6b06522

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Works referencing / citing this record:

Infrared spectroscopy in superfluid helium droplets
journal, December 2018

Verma, Deepak; Tanyag, Rico Mayro P.; O’Connell, Sean M. O.
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Title: Infrared Spectroscopy of the Tropyl Radical in Helium Droplets

Abstract

Citation Formats

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