• C60 da tosh-Uels nuqsoni
  • 33-rasm (a)
  • Tarkib Nanotubalar va ularning hosilalari va uglerodning kimyoviy xossalari




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    a
    b
    3
    3/6
    i =1
    1/4
    2/5
    a1
    (I h) (D5h)
    (C 2)
    (I h) (D5h)
    (D 6d)
    C60 C70 C72 C74 C76 C78 C80 C82 C84 C86 C90 C96
    )
    C60 C70 C72 C74 C76 C78 C80 C82 C84 C86 C90 C96
    (D 3 soat)
    (C2v (D)
    (D
    ) 2
    (D 6d)
    (D 3
    soat)
    (D2) )
    (C2) (C2 )
    (D
    (C2v (D)
    (D2) )
    (D2 )
    (C 2)
    (C2) (C2 )
    (D2 )
    2.5
    9.5
    9.0
    1.5
    12.0
    2.0
    Fulleren qafas
    11.5
    3.0
    1.0
    10.0
    Fulleren qafas
    10.5
    11.0
    0,5
    1/4
    2
    2d
    2d
    Machine Translated by Google


    C60 da tosh-Uels nuqsoni
    {1.462}
    2,181
    {2,187}
    1,478
    {1,480}
    {1.475}
    {1.388}
    1
    1.245
    1,467
    {1,472}
    1.474
    {1.447}
    1.509
    4
    {1.433}
    {1.408}
    {1.366}
    {1.484}
    {1.412}
    d(C1-C4):2,276
    {2,249}
    d(C1-C3):2,269
    {2,265}
    2,236
    {2,242}
    1,475
    {1,477}
    {1.421}
    1,615
    {1,611}
    1.458
    1.425
    3
    {1.479}
    1,604
    {1,592}
    1.467
    {1.469}
    1.379
    {1.257}
    2
    {1.423}
    1.443
    {1.643}
    1.353
    1.397
    1.431
    1.484
    1.648
    1.415
    1,474
    {1,474}
    1.401
    TC Dinadayalane va J. Leszczynski
    44
    33-rasm (a) Bukminsterfullerendan C60-C2v ga C60 (Ih) ko'k rangdagi CC bog'ining 90i
    aylanishi natijasida hosil bo'lgan Tosh-Uels nuqsoni . (b) C2v simmetriya izomerining
    optimallashtirilgan tuzilishi . (c) Tosh-Uels transformatsiyasining kelishilgan yo'li uchun C2
    simmetriya o'tish holatining tuzilishi . (d) karben oraliq mahsuloti va C60-C2v izomeri o'rtasidagi
    assimetrik o'tish holatining tuzilishi . Bog'lanish uzunligi nazariyaning B3LYP/6-31G* va PBE/6-
    31G* ( jingalak qavs ichida) darajasida olingan va Å da berilgan (Rasmlar Bettinger va boshq.
    (2003)
    va Yumura et. boshqalar
    (2007).
    Mualliflik huquqi 2003 va 2007 Amerika Kimyo Jamiyati)
    Fullereneizomerlar Tosh-Uels transformatsiyasi orqali o'zaro konvertatsiya qilishlari
    mumkin (Stone and Wales
    1986;
    Troyanov and Tamm
    2009).
    Yaqinda eksperimental
    tadqiqotlar shuni ko'rsatdiki, xlor bilan ishlaydigan D2-C76 IPR izomeri IPR bo'lmagan
    izomerga aylantirildi va bu transformatsiya ettita yagona Stone-Wales qayta tashkil
    etilishini o'z ichiga olishi taklif qilindi (Ioffe va boshq.
    2009).
    Hisoblash kimyogarlari,
    ayniqsa, C60 fullerenni hisobga olgan holda, Tosh-Uels o'zgarishi uchun energiya
    to'siqlarini va bu qayta tartibga solishda ishtirok etishi mumkin bo'lgan mexanizmlarni
    tushunishga harakat qilishdi (Bettinger va boshq.
    2003;
    Eggen va boshq.
    1996;
    Yumura va boshq.
    2007).
    Tosh-Uels tipidagi C60 (C2v)
    1,68 eV (38,7 kkal/mol)
    C60 (I
    h) 0,00 eV (0,0 kkal/mol)

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    Tarkib Nanotubalar va ularning hosilalari va uglerodning kimyoviy xossalari

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