Crayon
发表于 2025-3-25 05:32:09
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nominal
发表于 2025-3-25 11:30:08
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
发表于 2025-3-25 12:53:47
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
发表于 2025-3-25 19:47:08
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Conducive
发表于 2025-3-25 23:56:48
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
发表于 2025-3-26 01:21:29
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
发表于 2025-3-26 08:12:03
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
发表于 2025-3-26 09:58:17
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
发表于 2025-3-26 15:21:41
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
发表于 2025-3-26 20:47:32
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.