Unusual trinuclear complex of copper(II) containing a 4′-(3-methyl-2-thienyl)-4,2′: 6′,4″-terpyridine ligand. Structural, spectroscopic, electrochemical and magnetic properties

Dominique Toledo, Guillermo Ahumada, Carolina Manzur, Thierry Roisnel, Octavio Peña, Jean René Hamon, Jean Yves Pivan, Yanko Moreno

Resultado de la investigación: Contribución a una revistaArtículo

5 Citas (Scopus)

Resumen

We report the synthesis, characterization, crystal and molecular structure as well as the spectroscopic, electrochemical and magnetic properties of an unexpected trinuclear copper(II) complex (1), made of three Cu(2-TTA)2 units (2-TTA = 2-thenoyltrifluoroacetone) bridged by two 4'-(3-methyl-2-thienyl)-4,2′:6′,4″-terpyridine (4-stpy) ligands. The central Cu(II) atom shows an octahedral geometry, while the lateral metal centers present a slightly distorted square pyramidal coordination sphere. It is suggested that the introduction of the relatively bulky substituent groups (2-thienyl and [sbnd]CF3) in the 2-TTA ligand are responsible of this uncommon coordination mode. The magnetic behavior of 1 is reported in terms of a combination of monomer and dimer units, leading to weak antiferromagnetic interaction (J = −1.93 cm−1). The cyclovoltammogram of 1 exhibits, in the cathodic potential region, three redox events due to Cu2+/Cu+ and Cu+/Cu0 redox couples and to the mono-electronic reduction of the 4-stpy ligand.

Idioma originalInglés
Páginas (desde-hasta)213-221
Número de páginas9
PublicaciónJournal of Molecular Structure
Volumen1146
DOI
EstadoPublicada - 15 oct 2017

Áreas temáticas de ASJC Scopus

  • Química analítica
  • Espectroscopia
  • Química orgánica
  • Química inorgánica

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