Multiple substitution effects and three-dimensional nonlinear free-energy relationships in the electrochemical reduction of the N,N'-dibenzyl viologen and the 4-benzoyl-N-benzylpyridinium cation

Article Abstract:

The simultaneous effect of two substituents on the redox potentials, E sub 1/2's, of N,N' -di(p-substituted benzyl)- viologens (1-X, Y) and of 4-(p-substituted benzoyl)-N-(p-substituted benzyl) pyridinium cations (2-X,Y), is investigated in terms of the substituent constants, sigma p-X and sigma p-Y. Systems 1-X,Y and 2-X,Y are selected at random for all practical purposes.

Observations, Electrochemistry, Substitution reactions

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Potential dependent orientation of acetonitrile on platinum (111) electrode surface studied by sum frequency generation

Article Abstract:

Sum frequency generation (SFG) vibrational spectroscopy is used to investigate the orientation of acetonitrile (CH3CN) and Pt (111) electrode. The SFG results indicate that acetronitrile orients in response to the electrode potential with the C-C bond, C3 symmetry axis, perpendicular to the surface.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Platinum

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The redox chemistry of 4-benzoyl-N-methylpyridinium cations in acetonitrile with and without proton donors: the role of hydrogen bonding

Article Abstract:

In anhydrous CH(sub 3)CN, 4-benzoyl-N-methylpyridinium cations have undergone two reversible reductions, which are in analogy to quinones and viologens. Results showed that rigorous exclusion of proton donors make extended operational lifetimes possible.

Chemical synthesis

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