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Título

Efficient Rare-Earth-Based Coordination Polymers as Green Photocatalysts for the Synthesis of Imines at Room Temperature

AutorAguirre-Díaz, Lina María; Snejko, Natalia ; Iglesias, Marta ; Sánchez, Félix ; Gutiérrez-Puebla, Enrique ; Monge, M. Ángeles
Fecha de publicación2018
EditorAmerican Chemical Society
CitaciónInorganic Chemistry 57: 6883-6892 (2018)
ResumenFive new rare-earth coordination polymers (CPs) were designed in order to offer a remarkable platform that contains light-harvesting antennas and catalytic active centers to achieve solar-energy conversion as green alternatives in the synthesis of imines. These five new spirobifluorene-containing Ln-CPs, named [Er(Hsfdc)(sfdc)(HO)]·xHO (RPF-30-Er), [Ln(Hsfdc)(sfdc)(EtOH)]·S (RPF-31-Ln, where Ln = La, Nd, and Sm and S = HO or EtOH), and [Ho(Hsfdc)(sfdc)(HO)] (RPF-32-Ho) (RPF = rare-earth polymeric framework and Hsfdc = 9,9′-spirobi[9H-fluorene]-2,2′-dicarboxylic acid), have been solvothermally synthesized, and their structural features can be described as follows: (i) RPF-30-Er shows a 3D framework in which the inorganic trimers (secondary building units) are cross-linked by Hsfdc and sfdc linkers displaying a pcu topology. (ii) The isostructural RPF-31-Ln series of materials, together with RPF-32-Ho, exhibit a 1D network of chains growing along the a axis with a ribbon-of-rings topology type. The photocatalytic activity of the RPF-n materials was tested in the oxidative coupling of amines using molecular oxygen and air as oxidizing agents under warm light. Among the materials investigated, RPF-31-Nd was chosen to further investigate the approach in the selectivity of different amine derivates.
Versión del editorhttp://dx.doi.org/10.1021/acs.inorgchem.8b00465
URIhttp://hdl.handle.net/10261/172597
Identificadoresdoi: 10.1021/acs.inorgchem.8b00465
issn: 0020-1669
e-issn: 1520-510X
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