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- W1964253403 abstract "La réduction électrochimique de la mésotétraphénylporphyrine de nickel β-substituée—NiIITPP(CN)4—est étudiée en milieu DMF sur électrode de mercure en vue de mesurer les effets de complexation axiale en présence d'eau ou de pyridine. La métalloporphyrine β-substituée qui est réduite, est soit l'espèce mono-ligandée soit l'espèce bi-ligandée. Au contraire, on n'observe pas de coordination dans le cas de la métalloporphyrine non substitutée NiIITPP. Les effets de complexation observés sont analysés et discutés comme étant la conséquence des interactions métal-cycle et en particulier d'un accroissement des liaisons retour dπ-π* dû aux β-substituants. The electrochemical reduction of β-substituted NiII tetraphenylporphyrin was studied in DMF at a mercury electrode in order to determine the effect of axial ligand complexation in the presence of water or pyridine. The NiII complex which is electroreduced is either the mono or bis liganded species. In contrast no axial ligand coordination is observed for the unsubstituted Ni TPP and this is the species which is electroreduced in DMF alone. This complexation of the β-substituted species is a consequence of the enhanced metal-ring interaction and especially of the dπ-π* backbonding." @default.
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- W1964253403 date "1981-12-01" @default.
- W1964253403 modified "2023-09-25" @default.
- W1964253403 title "Effets de β-substitutions sur la complexation axiale de NiIITPP par des bases de Lewis" @default.
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- W1964253403 doi "https://doi.org/10.1016/0013-4686(81)85172-9" @default.
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