Spectroscopic, Studies of Two Dynamicallly Different 1,4-Dihydropyridine Structures

• Autorzy: Śliwińska E. , Palewska K. , Lewanowicz A. , Lipiński J. , Sworakowski J. , Gancarz R. , Nešpůrek S.
• Języki publikacji: EN

Abstrakty

EN

Results of spectroscopic studies of solutions of two photoactive dihydropyridine derivatives: 1-methyl-2,4,4,6-tetraphenyl-1,4-dihdyropyridine and 4,4-(biphenyl-2,2_-diyl)- 2,6-diphenyl-1-methyl-1,4-dihydropyridine (hereafter referred to as DHP and BDH, respectively) are presented. The analysis of UV-Vis and NMR spectra points to a different behaviour of the two molecules under study, in spite of a close similarity of formal molecular structures. These results indicate that two isomers of BDH exist in solid matrices, as well as in liquid solutions, in the temperature range studied. No such feature has been detected in DHP.We attribute the difference to an enhanced stiffness of the BDH molecule resulting from a bridge between side phenyl groups.

Słowa kluczowe

EN

dihydropyridine; UV-Vis spectroscopy; NMR spectroscopy

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2002
• Tom: Vol. 76 / nr 2-3
• Strony: 235--247
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Śliwińska E.

• Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże S. Wyspiańskiego 27, 50370 Wrocław, Poland

autor

Palewska K.

• Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże S. Wyspiańskiego 27, 50370 Wrocław, Poland

autor

Lewanowicz A.

• Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże S. Wyspiańskiego 27, 50370 Wrocław, Poland

autor

Lipiński J.

• Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże S. Wyspiańskiego 27, 50370 Wrocław, Poland

autor

Sworakowski J.

• Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże S. Wyspiańskiego 27, 50370 Wrocław, Poland

autor

Gancarz R.

• Institute of Organic Chemistry, Biochemistry and Biotechnology, Wrocław University of Technology, Wybrzeże S. Wyspiańskiego 27, 50370 Wrocław, Poland

autor

Nešpůrek S.

• Instittde of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 0ó Prague, Czech Republic

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