Titlebook: Substituent Effects in Organic Polarography; Petr Zuman Book 1967 Plenum Press 1967 Polarizer.Steric effect.aromatic.behavior.classificati

Crayon

nominal

Reaction Series in which the Electroactive Group is Directly Attached to an Alkyl or Aryl Substitueent can take place. The shifts in the half-wave potentials of compounds of this kind, in which the polarographically active group is not cyclic system (as in some heterocyclic compounds treated in Chapter IV), are discussed in this chapter. Substituents of the type CH.X and phenyl, which exert predo

commune

Effects of Substituents in Condensed Polycyclic Hydrocarbons,ther than that carrying the electroactive group. Furthermore, the reduction or oxidation can take place in the aromatic nucleus. And finally, it is possible to compare the polarographic behaviors of compounds containing the same polarographically active group in various positions in the ring system

幼稚

Conducive

Effects of Substituents in Quinonoid Compounds,he change in the increment of the standard free energy in the interconversion of the oxidized and reduced forms. The shift in the redox potential (or half-wave potential, denoted by Δ.), defined as Δ. . = (.). — (. .). (where the index X denotes the compound containing the substituent X and the inde

Pigeon

Alicyclic Systems,far. In these systems the electroactive group either can be situated in the side chain, or be attached directly to the cyclic system and form a part of it. The structural effects that can exert an influence on the electroactive group can be caused either by a substituent in the cyclic system or by t

fidelity

Monocyclic Heterocyclic Compounds,s.) In these compounds hydrogenation of the pyridine ring may occur. Moreover, even in cases where the reduction has been proved to occur in the side chain the possibility that the pyridine ring is the first point of electron attack cannot be excluded.

呼吸

Reaction Series in which the Electroactive Group is Directly Attached to an Alkyl or Aryl Substitue (as in some heterocyclic compounds treated in Chapter IV), are discussed in this chapter. Substituents of the type CH.X and phenyl, which exert predominantly polar effects, cause shifts in half-wave potential which follow

神圣在玷污

Effects of Substituents in Quinonoid Compounds,half-wave potential, denoted by Δ.), defined as Δ. . = (.). — (. .). (where the index X denotes the compound containing the substituent X and the index H the parent reference compound) is proportional to the difference of the logarithms of the equilibrium constants . and . of the corresponding reversible process

柔声地说

Alicyclic Systems,f it. The structural effects that can exert an influence on the electroactive group can be caused either by a substituent in the cyclic system or by the ring size and the stereochemistry of the system.