Structure and magnetic characterization of tetranuclear closed/double-open cubane core, and 1D polynuclear copper(II) complexes
Three copper(II) complexes namely [Cu4(L1)4]·0.5(H2O) (1), [Cu4(L2)2(HL2)2(H2O)2](sq)·H2O (2) and {[Cu2(L2)2(tp)]·(H2O)}n (3) (H2L1 = [(E)-2-((1-hydroxybutan-2-ylimino)methyl)phenol], H2L2 = [(E)-2-((1-hydroxybutan-2-ylimino)methyl)-6-methoxyphenol], sq = squarate and tp = terephthalate ion) have be...
| Autores: | , , , |
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| Tipo de documento: | artigo |
| Estado: | Versión aceptada para publicación |
| Data de publicação: | 2019 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositório: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/157963 |
| Acesso em linha: | https://hdl.handle.net/2445/157963 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Coure Propietats magnètiques Polímers Copper Magnetic properties Polymers |
| Resumo: | Three copper(II) complexes namely [Cu4(L1)4]·0.5(H2O) (1), [Cu4(L2)2(HL2)2(H2O)2](sq)·H2O (2) and {[Cu2(L2)2(tp)]·(H2O)}n (3) (H2L1 = [(E)-2-((1-hydroxybutan-2-ylimino)methyl)phenol], H2L2 = [(E)-2-((1-hydroxybutan-2-ylimino)methyl)-6-methoxyphenol], sq = squarate and tp = terephthalate ion) have been characterized by structure determination and magnetic analysis. Both 1 and 2 are tetranuclear Cu4O4 species with closed cubane core and double-open cubane like core structure, respectively. On the other hand complex 3 is a 1D polymeric chain, where Schiff base chelated dinuclear copper units are linked through terephthalate ions. C-H π interactions among the 1D polymeric chains form a 2D supramolecular architecture. Variable temperature magnetic property study indicates overall antiferromagnetic exchange coupling in all complexes |
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