Název:
Preparation and Physicochemical Properties of [6]Helicenes Fluorinated at Terminal Rings.
Autoři:
Církva, Vladimír ; Jakubík, Pavel ; Žádný, Jaroslav ; Vacek, J. ; Strašák, Tomáš ; Hrbáč, J. ; Císařová, I. ; Storch, Jan Typ dokumentu: Příspěvky z konference Konference/Akce: Advances in Organic, Bioorganic and Pharmaceutical Chemistry LIBLICE 2018 /53./, Lázně Bělohrad (CZ), 20181102
Rok:
2018
Jazyk:
eng
Abstrakt: Two fluorinated helicenes, tetrafluoro[6]helicene and octafluoro[6]helicene were prepared photochemically and their physicochemical and optical properties were investigated. A separation of racemic tetrafluoro[6]helicene into individual enantiomers (P and M) was performed and the racemization barrier was determined. Crystal structures of major synthetic products including individual enantiomers of tetrafluoro[6]helicene were determined showing the replacement of π-π and CH-π interactions by CH-F interactions with increasing fluorine substitution. DFT calculation were performed to get an insight into the charge distribution and HOMO-LUMO gap.
Klíčová slova:
fluorine; helicene; substitution Číslo projektu: GA17-02578S (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Book of Abstracts, ISBN N
Práva: Dílo je chráněno podle autorského zákona č. 121/2000 Sb.