title: On the physicochemical properties of pyridohelicenes.
abstract: A comprehensive study on the physicochemical properties of a series of mono- and diaza[5]helicenes as well as mono- and diaza[6]helicenes is reported. Through the use of both computational and experimental methods, these helically chiral pyridohelicenes with the nitrogen atom(s) in various positions are characterised according to their inversion barriers, protonation constants and redox potentials. By using DFT calculations, kinetic measurements, UV/Vis titrations, cyclic voltammetry and EPR spectroscopy, a self-contained picture of their behaviour under conventional treatment by heat, acids and oxidising/reducing agents is provided.
authors: Institute of Organic Chemistry and Biochemistry, ASCR, v.v.i. Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6 (Czech Republic), Fax: (+420) 220183133. chocholousova@uochb.cas.cz.
authors: Jana
authors: J
authors: Vacek Chocholoušová
authors: Jaroslav
authors: J
authors: Vacek
authors: Angelina
authors: A
authors: Andronova
authors: Jiří
authors: J
authors: Míšek
authors: Olivier
authors: O
authors: Songis
authors: Michal
authors: M
authors: Šámal
authors: Irena G
authors: IG
authors: Stará
authors: Michel
authors: M
authors: Meyer
authors: Mélanie
authors: M
authors: Bourdillon
authors: Lubomír
authors: L
authors: Pospíšil
authors: Ivo
authors: I
authors: Starý
keywords: basicity; chirality; cyclic voltammetry; density functional calculations; helical structures; helicenes