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Effect of free valence on the characteristics of internal rotation in n-alkyl radicals

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Abstract

A study of internal rotation in the radicals n-C n H2n+1C·H2, (2 ≤ n ≤ 7) was carried out for the case of rotation around the bonds not including the radical center. 21 potential functions of internal rotation V(φ) were calculated. The coefficients in V(φ) were shown to depend only on the immediate environment at the bond of rotation. Characteristics of internal rotation in n-alkyl radicals were compared with related parameters of the corresponding alkane molecules. The generalized function V av(φ) with the coefficients defined only by the position of the bond of rotation in the hydrocarbon chain and possessing the transposition property were proposed. The functions V av(φ) were recommended for the simulation of the structure and properties of large molecules containing hydrocarbon fragments. This work continues a systematic study on the characteristics of the internal rotation in the n-alkane molecules and the groups containing free valence in n-alkyl radicals.

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Authors and Affiliations

  1. Tver’ State Medical Academy, ul. Sovetskaya 4, Tver’, 170000, Russia

    V. V. Turovtsev

  2. Tver’ State University, ul. Zhelyabova 33, Tver’, 170010, Russia

    V. V. Turovtsev & Yu. D. Orlov

Authors
  1. V. V. Turovtsev
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  2. Yu. D. Orlov
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Correspondence to V. V. Turovtsev.

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Original Russian Text © V.V. Turovtsev, Yu.D. Orlov, 2011, published in Zhurnal Obshchei Khimii, 2011, Vol. 81, No. 9, pp. 1458–1464.

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Turovtsev, V.V., Orlov, Y.D. Effect of free valence on the characteristics of internal rotation in n-alkyl radicals. Russ J Gen Chem 81, 1798 (2011). https://doi.org/10.1134/S1070363211090118

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  • DOI: https://doi.org/10.1134/S1070363211090118

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