A dissymmetric, singly phenoxido-bridged CuII dinuclear coordination compound: Synthesis, characterisation, magnetic and computational study

Amitabha Datta, Nien Tsu Chuang, Fu Xing Liao, Ching Han Hu, Wen Yen Huang, Jui Hsien Huang, Kuheli Das, Patrick Gamez, José Sánchez Costa

Research output: Contribution to journalArticle

Abstract

A singly phenoxido-bridged dinuclear CuII complex, [Cu2(L) 2(SCN)2(H2O)], has been obtained from a Schiff-base ligand (2-[{[2-(dimethylamino)ethyl]imino}methyl]-6-methoxyphenol), generated by condensation of o-vanillin with N,N-dimethylethane-1,2-diamine. The Cu(II) complex has been fully characterised by analytical, spectroscopic, magnetic susceptibility and EPR measurements and DFT calculations, as well as single-crystal X-ray diffraction analysis. It consists of two geometrically distinct square-pyramidal and octahedral copper(II) centres, exhibiting N 2O3 and N4O2 donor sets. In the dimeric unit, the copper atoms are connected by a μ2-phenolato oxygen atom, belonging to one bridging Schiff-base ligand. Variable-temperature magnetic susceptibility measurements indicate strong antiferromagnetic exchange interactions between the Cu(II) centres, with a 2J value of -89(1) cm -1.

Original languageEnglish
Pages (from-to)637-640
Number of pages4
JournalJournal of Chemical Research
Issue number11
DOIs
Publication statusPublished - 2010 Nov 1

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Schiff Bases
Magnetic susceptibility
Copper
Ligands
Atoms
Diamines
Exchange interactions
Discrete Fourier transforms
X ray diffraction analysis
Paramagnetic resonance
Condensation
Single crystals
Oxygen
Temperature
2-vanillin

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Datta, Amitabha ; Chuang, Nien Tsu ; Liao, Fu Xing ; Hu, Ching Han ; Huang, Wen Yen ; Huang, Jui Hsien ; Das, Kuheli ; Gamez, Patrick ; Costa, José Sánchez. / A dissymmetric, singly phenoxido-bridged CuII dinuclear coordination compound : Synthesis, characterisation, magnetic and computational study. In: Journal of Chemical Research. 2010 ; No. 11. pp. 637-640.
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A dissymmetric, singly phenoxido-bridged CuII dinuclear coordination compound : Synthesis, characterisation, magnetic and computational study. / Datta, Amitabha; Chuang, Nien Tsu; Liao, Fu Xing; Hu, Ching Han; Huang, Wen Yen; Huang, Jui Hsien; Das, Kuheli; Gamez, Patrick; Costa, José Sánchez.

In: Journal of Chemical Research, No. 11, 01.11.2010, p. 637-640.

Research output: Contribution to journalArticle

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AU - Datta, Amitabha

AU - Chuang, Nien Tsu

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AU - Hu, Ching Han

AU - Huang, Wen Yen

AU - Huang, Jui Hsien

AU - Das, Kuheli

AU - Gamez, Patrick

AU - Costa, José Sánchez

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N2 - A singly phenoxido-bridged dinuclear CuII complex, [Cu2(L) 2(SCN)2(H2O)], has been obtained from a Schiff-base ligand (2-[{[2-(dimethylamino)ethyl]imino}methyl]-6-methoxyphenol), generated by condensation of o-vanillin with N,N-dimethylethane-1,2-diamine. The Cu(II) complex has been fully characterised by analytical, spectroscopic, magnetic susceptibility and EPR measurements and DFT calculations, as well as single-crystal X-ray diffraction analysis. It consists of two geometrically distinct square-pyramidal and octahedral copper(II) centres, exhibiting N 2O3 and N4O2 donor sets. In the dimeric unit, the copper atoms are connected by a μ2-phenolato oxygen atom, belonging to one bridging Schiff-base ligand. Variable-temperature magnetic susceptibility measurements indicate strong antiferromagnetic exchange interactions between the Cu(II) centres, with a 2J value of -89(1) cm -1.

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