The conjugate system 1-anthraquinonyl-1,4,8,11-tetraazocyclotetradecane (cyaqO2), was prepd. through reaction of 2-chloromethylanthraquinone with a 5-fold excess of cyclam in CHCl3 at room temp. Reaction of cyaqO2 with NiX2.6H2O (X = Cl, ClO4) gave Ni(cyaqO2), in which the metal center was incorporated by the tetraaza-macrocyclic subunit. The redox behavior of the Ni(II) complexes was investigated in a CH2Cl2 soln. of 0.1 M Bu4NX, by voltammetric techniques. Two-phase redn. of the quinone subunit of Ni(cyaqO2) in CH2Cl2 by aq. CrII takes place at a rate higher than that obsd. for anthraquinone mol., but the reduced conjugate system partitions between CH2Cl2 and H2O.

Control of the redox activity of anthraquinone through an appended nickel(II)-cyclam side chain. A two-site three-electron redox system

FABBRIZZI, LUIGI;MANGANO, CARLO PAOLO;POGGI, ANTONIO;
1990

Abstract

The conjugate system 1-anthraquinonyl-1,4,8,11-tetraazocyclotetradecane (cyaqO2), was prepd. through reaction of 2-chloromethylanthraquinone with a 5-fold excess of cyclam in CHCl3 at room temp. Reaction of cyaqO2 with NiX2.6H2O (X = Cl, ClO4) gave Ni(cyaqO2), in which the metal center was incorporated by the tetraaza-macrocyclic subunit. The redox behavior of the Ni(II) complexes was investigated in a CH2Cl2 soln. of 0.1 M Bu4NX, by voltammetric techniques. Two-phase redn. of the quinone subunit of Ni(cyaqO2) in CH2Cl2 by aq. CrII takes place at a rate higher than that obsd. for anthraquinone mol., but the reduced conjugate system partitions between CH2Cl2 and H2O.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11571/454218
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 4
social impact