Computer simulation of the routes of conformational isomerization of 1,3,2-dioxathiane and its Soxides by nonempirical quantum-chemical method RHF/6-31G(d) revealed the main and local minima and transition states of this process. It was shown that the barrier of ring inversion is reduced in going from 1,3,2-dioxathiane to its oxides. The established Delta G (0) (300 K) value of S=O group in cyclic sulfite (-15.0 kJ mol(-1)) is in good agreement with the experimental data.
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Kazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, RussiaKazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, Russia
Ismagilova, R. R.
Kuznetsova, A. A.
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Kazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, RussiaKazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, Russia
Kuznetsova, A. A.
Chachkov, D. V.
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Kazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, Russia
Russian Acad Sci, Res Inst Syst Studies, Fed Sci Ctr, Kazan Branch,Interdept Supercomp Ctr, Kazan, Tatarstan, RussiaKazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, Russia
Chachkov, D. V.
Malysheva, S. F.
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Russian Acad Sci, Siberian Branch, Favorskii Irkutsk Inst Chem, Irkutsk, RussiaKazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, Russia
Malysheva, S. F.
Belogorlova, N. A.
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Russian Acad Sci, Siberian Branch, Favorskii Irkutsk Inst Chem, Irkutsk, RussiaKazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, Russia
Belogorlova, N. A.
Vereshchagina, Ya. A.
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Kazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, RussiaKazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Tatarstan, Russia
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King Khalid Univ, Fac Sci, Dept Chem, Abha, Saudi ArabiaKing Khalid Univ, Fac Sci, Dept Chem, Abha, Saudi Arabia
Ali, Tarik E.
Assiri, Mohammed A.
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King Khalid Univ, Fac Sci, Dept Chem, Abha, Saudi Arabia
King Khalid Univ, Res Ctr Adv Mat Sci, Abha, Saudi ArabiaKing Khalid Univ, Fac Sci, Dept Chem, Abha, Saudi Arabia
Assiri, Mohammed A.
Yahia, Ibrahim S.
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King Khalid Univ, Fac Sci, Dept Phys, Abha, Saudi ArabiaKing Khalid Univ, Fac Sci, Dept Chem, Abha, Saudi Arabia