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 - Université de Rennes Access content directly
Journal Articles Journal of Molecular Structure Year : 2017

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

Abstract

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.
Fichier principal
Vignette du fichier
Toledo et al. - Unusual trinuclear complex of copper(II) containin.pdf (4.31 Mo) Télécharger le fichier
mmc1.docx (2.03 Mo) Télécharger le fichier
mmc1.pdf (462.81 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Origin : Files produced by the author(s)
Origin : Files produced by the author(s)

Dates and versions

hal-01544454 , version 1 (07-07-2017)

Identifiers

Cite

D. Toledo, G. Ahumada, C. Manzur, T. Roisnel, O. Peña, et al.. 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. Journal of Molecular Structure, 2017, 1146, pp.213-221. ⟨10.1016/j.molstruc.2017.05.108⟩. ⟨hal-01544454⟩
54 View
122 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More