Influence of the Metal Ion on the Topology and Interpenetration of Pyridylvinyl(benzoate) Based Metal-Organic Frameworks

Autor(es)

Dezotti, Yuri ^[1] ; Ribeiro, Marcos Antonio ^[2] ; Pirota, Kleber R. ^[3] ; Barros, Wdeson Pereira ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Quim, Dept Quim Inorgan, BR-13083970 Campinas, SP - Brazil

^[2] Univ Fed Espirito Santo, Dept Quim, BR-29075910 Vitoria, ES - Brazil

^[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Dept Fis Mat Condensada, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Crystal Growth & Design; v. 19, n. 10, p. 5592-5603, OCT 2019.
• Citações Web of Science: 0

Resumo

A family of four M(II)-metal-organic frameworks of general formula [{[}M-x(pvb)(2x)]y(dmf)](n) (M = Cu, 1; M = Co, 2; M = Ni, 3; M = Mn, 4), based on the bis[4-{[}2-(4-pyridyl)ethenyl]] benzoic acid (Hpvb) ligand, were obtained. 1 exhibits a 5-fold interpenetrated lvt framework, 2 and 3 a 7-fold interpenetrating dia framework, and 4 a 2-fold interpenetrated dmc framework. Magnetic properties of 1-4 have been investigated. 1 was analyzed by a Curie-Weiss model, while 2 and 3 where analyzed by a zero-field splitting model due to the very long metal-metal distances, which results in very weak antiferromagnetic interactions. The coupling pathway in 4 was done by carboxylate bridges instead of the pvb pathway, affording a short metal-metal separation that was analyzed by a isotropic Heisenberg spin Hamiltonian for a linear trinuclear Mn(II) cluster. The different metal coordination modes and geometries, along with template effects induced by the solvent, play an important role in the formation of distinctive structural topologies. (AU)

• Processo FAPESP: 15/22379-7 - Sistemas magnéticos moleculares multifuncionais: preparação e estudo das propriedades magnéticas, luminescentes e fotorreativas de complexos polinucleares contendo íons metálicos de transição e lantanídeos
• Beneficiário: Wdeson Pereira Barros
• Linha de fomento: Auxílio à Pesquisa - Regular