Steric effects and the electrochemistry of phenyl-substituted anthracenes and related compounds

Electrochemical reduction of sym-dibenzocyclooctatetraene, sym-dibenzo-1,5-cyclooctadiene-3,7-diyne, and sym-dibenzo-1,3,5-cyclooctatrien-7-yne

“…The values are also plotted with respect to the well-known correlation of E\¡f vs. the energy of the lowest unoccupied molecular orbital (LUMO) determined by Hiickel MO calculations (mm+i, in units of ß) in Figure 8. [21][22][23][24] The equation given by Streitweiser and Schwager, corrected to an SCE reference electrode,23…”

Phosphino macrocycles. 10. Electrochemical behavior of metal tricarbonyl complexes of several tridentate macrocycles containing soft (P,S) ligating sites

“…The potential of the reference was determined following each series of experiments by adding anthracene, a compound whose redox behavior is known. 21 To the cell was attached an adapter, which permitted the addition of solids to degassed solvent-electrolyte mixtures. A platinum-disk (0.05 cm2) working electrode and platinum-coil counterelectrode completed the cell.…”

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“…For example, Al Matsen, a theoretician at UT, suggested a correlation between H ückel MO theory and the energy for the electron-transfer reactions of aromatic hydrocarbons, and this concept was developed by Michael Peover and many others. What emerged was a useful approach to correlating MO, electrochemistry, and ESR and insight into how changes in structure affected the responses (13,14). At the same time, very significant theoretical treatments by Rudy Marcus, Noel Hush, and others of the rates of electron transfer between coordination compounds, and later more generally, introduced and explained, at least semiquantitatively, the effect of molecular structure and solvent on the rates of electron transfer.…”