Copper-Azide-Thioarylazoimidazoles - Structure, Spectra, Redox Properties, Magnetism and Theoretical Interpretation

被引：27

作者：

Bhunia, Prasenjit ^{[1
]}

Banerjee, Debasis ^{[1
]}

Datta, Papia ^{[1
]}

Raghavaiah, Pallepogu ^{[2
]}

Slawin, Alexandra M. Z. ^{[3
]}

Woollins, John D. ^{[3
]}

Ribas, Joan ^{[4
]}

Sinha, Chittaranjan ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Chem, Inorgan Chem Sect, Kolkata 700032, India

[2] Hyderabad Cent Univ, Dept Chem, Hyderabad 500046, Andhra Pradesh, India

[3] Univ St Andrews, Dept Chem, St Andrews KY16 9ST, Fife, Scotland

[4] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2010年 / 02期

关键词：

Copper; Bridging ligands; Structure elucidation; Magnetic properties; Redox chemistry; TRANSITION-METAL-COMPLEXES; ELECTRON-TRANSFER KINETICS; CRYSTAL-STRUCTURE; LIGANDS; THIOETHER; COORDINATION; REDUCTION; MODEL; HYDROXIDE; PROTEINS;

D O I：

10.1002/ejic.200900648

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Azido-copper(II) and -copper(I) complexes of 1-alkyl-2-[(o-thioalkyl)phenylazo]imidazole (SRaaiNR') have been prepared and studied. Complex 2 [Cu(SRaaiNR')(mu(1,1)-N-3)(N-3)](2) dimerises via end-to-end (mu(1,3))-N-3 to form a tetrameric structure. Azido-copper(I) complexes of the ligands are obtained MeOH-bridged dimers, [Cu(SRaaiNR')(N-3)(mu-OHMe)](2) (3). The electronic spectra Suggest that a small reorganisation energy (0.08 eV) is associated with the change in electronic configuration, structure and oxidation state from Cu-II to Cu-I. Redox interconversion, Cu-II <-> Cu-I, [Cu(SMeaaiNMe)(mu-N-3)-(N-3)](2) (2a) <-> [Cu(SMeaaiNMe)(N-3)(mu-OHCH3)](2) (3a), has been performed in one case. The tetranuclear complex shows ferromagnetic and antiferromagnetic interactions. The spectra, redox chemistry and magnetism are explained by DFT studies.

引用

页码：311 / 321

页数：11

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