Sonochemical synthesis of two novel Pb(II) 2D metal coordination polymer complexes
Two new lead(II) coordination polymer complexes (CSCs) (2D), [Pb(L)(Br)]·HO (1), [Pb(HL)(L)(HO)]·HO (2), where L = CHNO (2-pyridinecarboxylic acid) and L = CHO (1,3,5-tricarboxylic acid), have been synthesized under different experimental conditions. Micrometric crystals (bulk) or microsized materia...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:220677 |
| Acceso en línea: | https://ddd.uab.cat/record/220677 https://dx.doi.org/urn:doi:10.1016/j.ultsonch.2017.11.037 |
| Access Level: | acceso abierto |
| Palabra clave: | Coordination polymer compounds Sonochemical process Ultrasound irradiation Nano particle Topology Morphology |
| Sumario: | Two new lead(II) coordination polymer complexes (CSCs) (2D), [Pb(L)(Br)]·HO (1), [Pb(HL)(L)(HO)]·HO (2), where L = CHNO (2-pyridinecarboxylic acid) and L = CHO (1,3,5-tricarboxylic acid), have been synthesized under different experimental conditions. Micrometric crystals (bulk) or microsized materials have been obtained depending on using the branch tube method or sonochemical irradiation. All materials have been characterized by scanning electron microscopy (SEM), powder X-ray diffraction (PXRD) and FT-IR spectroscopy. Single crystal X-ray analyses on complexes 1 and 2 shows that Pb ions are 8-coordinated, 7 and 9-coordinated, respectively. Topological analysis shows that the compound 1 and 2 are 4,6L26 and bnn net, respectively. However, neither the shape nor the morphology is maintained, showing the role of sonochemistry to modulate both morphology and dimensions of the resulting crystalline material, independently of whether we have a 2D coordination polymer (CP). Finally, micro structuration of lead(II) bromide oxide and lead(II) oxide have been prepared by calcination of two different lead (II) CPs at 700 °C that were characterized by SEM and XRD. |
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