Prediction of cathodic E1 and E2 values for viologen-containing 1/2 1/2 conjugated unimers and dimers from calculated pKb values of the aromatic substituents

Chen, Long, Hartl, Franti, Colquhoun, Howard and Greenland, Barnaby W (2017) Prediction of cathodic E1 and E2 values for viologen-containing 1/2 1/2 conjugated unimers and dimers from calculated pKb values of the aromatic substituents. Tetrahedron Letters, 58 (19). pp. 1859-1862. ISSN 0040-4039

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Abstract

A library of 18 conjugated, rod-like compounds with either one or two viologen residues were synthe- sized and characterized electrochemically. Containing up to 8 aromatic/heterocyclic rings in conjugation, the members of the library differ in the substitution pattern of electron-withdrawing or -donating groups on the aromatic substituents of the viologen units. The first and second half-wave potentials of each member were found to be linearly correlated with the calculated pKb values of the aromatic end-groups. This relationship will enable the half-wave potentials of related, novel, substituted viologen species to be predicted using a simple, empirical formula.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science > QD Chemistry > QD0241 Organic chemistry
Depositing User: Barnaby Greenland
Date Deposited: 09 Feb 2018 15:25
Last Modified: 09 Feb 2018 15:25
URI: http://sro.sussex.ac.uk/id/eprint/73446

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