Copper(II) complexes of thioarylazo-pentanedione: Structures,magnetism, redox properties and correlation with DFT calculations |
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| Authors: | Mrinal Kanti Paira,Tapan Kumar Mondal,Elena Ló pez-Torres,Joan Ribas,Chittaranjan Sinha |
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| Affiliation: | 1. Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India;2. Departamento de Química Inorgánica, c/Francisco Tomás y Valiente, 7. Universidad, Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain;3. Departament de Química Inorgànica, Universitat de Barcelona, Diagonal, 6487, 08028-Barcelona, Spain |
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| Abstract: | Copper(II) complexes of 3-((2-(alkylthio)phenylazo)-2,4-pentanedione, tridentate O, N, S donor ligands, are described in this work. Chloride bridged copper(II) polymers (1) and thiocyanato bridged copper(II) dimmers (2) are characterized by a single crystal X-ray diffraction study. The complexes show antiferromagnetic interactions, with J = −0.5 ± 0.1 cm−1 (1a) and −25.8 ± 0.5 cm−1 (2b), which implies stronger coupling in the –SCN-bridging compound. The spectra, redox and magnetism are explained by DFT studies. |
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| Keywords: | Azoacetylacetonate Copper(II) complex Bridged dimer Antiferromagetic coupling Spin density |
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