Flavin-related Compounds: 3-Ethyl-lumiflavin. Combined DFT, NMR, X-ray and EI Mass Spectral Study

• Autorzy: Sikorska E. , Hernando J. , Bourdelande J. L. , Khmelinskii I. , Kubicki M. , Komasa A. , Prukała D. , Sikorski M.
• Języki publikacji: EN

Abstrakty

EN

3-Ethyl-lumiflavin was characterized by a variety of methods. Laser flash photolysis measurements in methanol solutions yielded a triplet state living 9.5 ms and a radical species living 91mi s, with steady-state photolysis quantum yields below 10-5. Fluorescence life time of 4.5 ns and quantum yield of 0.16 was recorded in aqueous solu tions. Crystal structure determined by X-ray diffraction was quite similar to the geometry of an isolated molecule calculated using the DFT approach, with the observed differences attributable to a non linear hydrogen bond existing in the crystal solid. EI mass spectra revealed a fragmentation path specific to this compound and in existent in lumiflavin or other similar compounds, due to ejection of a C2H5-N=C=O molecule, containing the ethyl substituent of the parent molecule.

Słowa kluczowe

EN

3-ethyl-lumiflavin; flavin; photochemistry; triplet state; crystal structure

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2008
• Tom: Vol. 82, nr 11
• Strony: 2141--2152
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Sikorska E.

autor

Hernando J.

autor

Bourdelande J. L.

autor

Khmelinskii I.

autor

Kubicki M.

autor

Komasa A.

autor

Prukała D.

autor

Sikorski M.

• Faculty of Commodity Science, Poznań University of Economics, al. Niepodległości 10, 60-967 Poznań, Poland Fax: [phone], phone: [phone],

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