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Titolo:
FORMATION AND DECOMPOSITION STUDY OF ELECTROCHEMICALLY-GENERATED NICKEL(III)-NOTA COMPLEXES IN AQUEOUS-SOLUTION TA(3-)=1,4,7-TRIAZACYCLONONANE-N,N'N''-TRIACETATE)
Autore:
DECASTRO B; GOMES J; MARQUES MPM; GERALDES CFGC;
Indirizzi:
UNIV OPORTO,FAC CIENCIAS,DEPT QUIM,CEQUP,RUA CAMPO ALEGRE 823 P-4000 OPORTO PORTUGAL UNIV COIMBRA,FAC CIENCIAS & TECNOL,DEPT BIOQUIM P-3000 COIMBRA PORTUGAL
Titolo Testata:
Journal of the Chemical Society. Dalton transactions
fascicolo: 12, , anno: 1995,
pagine: 2041 - 2044
SICI:
0300-9246(1995):12<2041:FADSOE>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
NICKEL HYDROPORPHYRINS; MACROCYCLIC LIGANDS; CRYSTAL-STRUCTURES; RING SIZE; CHEMISTRY; OXIDATION; 1,4,7-TRIAZACYCLONONANE-N,N',N''-TRIACETATE; BIS(1,4,7-TRIAZACYCLONONANE)NICKEL(III); METALLOPORPHYRINS; STABILIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
B. Decastro et al., "FORMATION AND DECOMPOSITION STUDY OF ELECTROCHEMICALLY-GENERATED NICKEL(III)-NOTA COMPLEXES IN AQUEOUS-SOLUTION TA(3-)=1,4,7-TRIAZACYCLONONANE-N,N'N''-TRIACETATE)", Journal of the Chemical Society. Dalton transactions, (12), 1995, pp. 2041-2044

Abstract

Electochemical oxidation of the nickel(II) complex at the macrocyclicligand 1,4,7-triazacylononane-N,N',N''-triacetate (nota(3-)) in aqueous solution yields the nickel(III) complex, which undergoes fast base-promoted chemical decomposition. This decomposition process was studied by cyclic voltammetry, ESR acid electronic spectroscopy, and gave first-order kinetics relative to the nickel(III) complex. This is compatible with intramolecular reduction:of the metal centre by the ligand, followed by rapid decomposition of the radical species formed. The ligand fragmentation process was analysed by proton NMR spectroscopy of the electrolysed solution of the complex.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/08/20 alle ore 20:59:54