Rotational barriers in pentadienyl and pent-2-en-4-ynyl radicals

Iain MacInnes; John C. Walton

Rotational barriers in pentadienyl and pent-2-en-4-ynyl radicals

^*Corresponding author for this work

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Abstract

The barrier to internal rotation about the C(2)-C(3) bond in pentadienyl radicals was measured by line-shape analysis of the e.s.r. spectrum in the temperature range 320-420 K. The energy difference between the trans- and cis-conformers of pent-2-en-4-ynyl radicals was obtained from the temperature variation of their equilibrium concentration ratio and the barrier to interconversion was determined by e.s.r. line-shape analysis in the range 375-450 K. The rotational barriers and the corresponding stabilisation energies were in good agreement with previous estimates.

Original language	English
Pages (from-to)	1073-1076
Number of pages	4
Journal	Journal of the Chemical Society, Perkin Transactions 2
Issue number	7
Publication status	Published - 1 Dec 1985

Cite this

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title = "Rotational barriers in pentadienyl and pent-2-en-4-ynyl radicals",

abstract = "The barrier to internal rotation about the C(2)-C(3) bond in pentadienyl radicals was measured by line-shape analysis of the e.s.r. spectrum in the temperature range 320-420 K. The energy difference between the trans- and cis-conformers of pent-2-en-4-ynyl radicals was obtained from the temperature variation of their equilibrium concentration ratio and the barrier to interconversion was determined by e.s.r. line-shape analysis in the range 375-450 K. The rotational barriers and the corresponding stabilisation energies were in good agreement with previous estimates.",

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year = "1985",

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T1 - Rotational barriers in pentadienyl and pent-2-en-4-ynyl radicals

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AU - Walton, John C.

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N2 - The barrier to internal rotation about the C(2)-C(3) bond in pentadienyl radicals was measured by line-shape analysis of the e.s.r. spectrum in the temperature range 320-420 K. The energy difference between the trans- and cis-conformers of pent-2-en-4-ynyl radicals was obtained from the temperature variation of their equilibrium concentration ratio and the barrier to interconversion was determined by e.s.r. line-shape analysis in the range 375-450 K. The rotational barriers and the corresponding stabilisation energies were in good agreement with previous estimates.

AB - The barrier to internal rotation about the C(2)-C(3) bond in pentadienyl radicals was measured by line-shape analysis of the e.s.r. spectrum in the temperature range 320-420 K. The energy difference between the trans- and cis-conformers of pent-2-en-4-ynyl radicals was obtained from the temperature variation of their equilibrium concentration ratio and the barrier to interconversion was determined by e.s.r. line-shape analysis in the range 375-450 K. The rotational barriers and the corresponding stabilisation energies were in good agreement with previous estimates.

UR - https://www.scopus.com/pages/publications/37049105507

M3 - Article

AN - SCOPUS:37049105507

SN - 1472-779X

SP - 1073

EP - 1076

JO - Journal of the Chemical Society, Perkin Transactions 2

JF - Journal of the Chemical Society, Perkin Transactions 2

IS - 7

ER -

Rotational barriers in pentadienyl and pent-2-en-4-ynyl radicals

Abstract

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