The influence of 1-alkyl-3-methyl imidazolium ionic liquids on a series of cobalt-1,4-benzenedicarboxylate metal-organic frameworks

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Ling Xu (Autor) Outra; Bing Liu (Autor) Outra; Sheng Xian Liu (Autor) Outra; Huan Jiao (Autor) Outra; Baltazar de Castro (Autor) FCUP; Luis Cunha Silva (Autor) Outra

Revista

Título: CrystEngComm

Vol. 16

Páginas: 10649-10657

ISSN: 1466-8033

Editora: Royal Society of Chemistry

Indexação

ISI Web of Knowledge - 15 Citações

Scopus - 0 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-009-ZWB

DOI: 10.1039/c4ce01722f

Abstract (EN): To investigate the influence of ionic liquids on the structures and properties of the complexes, ionothermal synthesis of 1,4-benzenedicarboxylate acid (H2BDC) reacting with Co(NO3)(2) with four different 1-alkyl-3-methylimidazolium bromides produced three layered metal-organic frameworks with the chemical formula [RMI](2)[Co-3(BDC)(3)Br-2], (R = ethyl for 1; n-propyl for 2, and n-butyl for 3; MI = imidazolium) and a 3D architecture [AMI](2)[Co-3(BDC)(4)] (4) (A = amyl). Compounds 1-3 have the same (3,6) skeleton with[RMI](+) cations located in the interlayer space. Compound 4 grows into a 3D architecture based on BDC2- ligands linking similar 2D grids as those in 1-3. The [RMI](+) templates exert their influence on the diagonal sizes of the quadrilateral grids, the interlamellar spacing, and the solvent-accessible cavities through steric hindrance. By comparison of 1-3, the [RMI](+) templates also have an effect on the properties. As the alkyl chains in [RMI](+) increase, the decomposing temperatures increase, emission peaks around 400 nm blue shift, and the cavities of 1-3 decrease. 1-3 exhibit ferromagnetism with similar magnetic parameters, while 4 reveals antiferromagnetism.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9