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The electronic spectrum of benzvalene

Journal Article


Abstract


  • A detailed investigation of the electronic spectrum of benzvalene [tricyclo (3.1.0.02,6)hex-3-ene] in the vapor phase is reported. The spectrum appears to consist of two overlapping electronic transitions above 200 nm. The lower energy transition is broad and structureless, has an onset near 285 nm, and is assigned as 1B2 ← 1A1. The second transition, showing forbidden vibronic structure based on two false origins near 226 nm, is assigned 1A2 ← 1A1. The 1A2 state presumably arises from a σπ* configuration, which indicates significant ring strain and/or σ-π interaction. A one-state assignment of the spectrum is also possible. © 1975.

Publication Date


  • 1975

Citation


  • Griffith, D. W. T., Kent, J. E., & O'Dwyer, M. F. (1975). The electronic spectrum of benzvalene. Journal of Molecular Spectroscopy, 58(3), 427-435. doi:10.1016/0022-2852(75)90222-2

Scopus Eid


  • 2-s2.0-0041464352

Web Of Science Accession Number


Start Page


  • 427

End Page


  • 435

Volume


  • 58

Issue


  • 3

Abstract


  • A detailed investigation of the electronic spectrum of benzvalene [tricyclo (3.1.0.02,6)hex-3-ene] in the vapor phase is reported. The spectrum appears to consist of two overlapping electronic transitions above 200 nm. The lower energy transition is broad and structureless, has an onset near 285 nm, and is assigned as 1B2 ← 1A1. The second transition, showing forbidden vibronic structure based on two false origins near 226 nm, is assigned 1A2 ← 1A1. The 1A2 state presumably arises from a σπ* configuration, which indicates significant ring strain and/or σ-π interaction. A one-state assignment of the spectrum is also possible. © 1975.

Publication Date


  • 1975

Citation


  • Griffith, D. W. T., Kent, J. E., & O'Dwyer, M. F. (1975). The electronic spectrum of benzvalene. Journal of Molecular Spectroscopy, 58(3), 427-435. doi:10.1016/0022-2852(75)90222-2

Scopus Eid


  • 2-s2.0-0041464352

Web Of Science Accession Number


Start Page


  • 427

End Page


  • 435

Volume


  • 58

Issue


  • 3