6533b7dbfe1ef96bd12700fc

RESEARCH PRODUCT

On the physicochemical properties of pyridohelicenes.

Jana Vacek ChocholoušováIvo StarýMichal ŠáMalJiří MíšekMichel MeyerLubomír PospíšilAngelina AndronovaIrena G. StaráJaroslav VacekMélanie BourdillonOlivier Songis

subject

inorganic chemicals010405 organic chemistryChemistryReducing agent[CHIM.ORGA]Chemical Sciences/Organic chemistryOrganic ChemistryProtonationGeneral Chemistry010402 general chemistryKinetic energy01 natural sciencesRedoxCatalysis0104 chemical scienceslaw.invention[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistrylawComputational chemistryOrganic chemistryTitrationCyclic voltammetryElectron paramagnetic resonanceChirality (chemistry)ComputingMilieux_MISCELLANEOUS

description

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.

10.1002/chem.201204410https://pubmed.ncbi.nlm.nih.gov/24339162