期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 15, 页码 5962-5971出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201405684
关键词
cross-coupling; heterogeneous catalysis; metal-organic frameworks; strontium; structure elucidation
资金
- FCT [SFRH/BPD/71798/2010]
- FEDER through Programa Operacional Factores de Competitividade-COMPETE
- national funds through FCT-Fundacao para a Ciencia e Tecnologia within CICECO project [FCOMP-01-0124-FERDER-037271, Pest-C/CTM/LA0011/2013]
A new amino-functionalized strontium-carboxylate-based metal-organic framework (MOF) has been synthesized that undergoes single crystal to single crystal (SC-to-SC) transformation upon desolvation. Both structures have been characterized by single-crystal X-ray analysis. The desolvated structure shows an interesting 3D porous structure with pendent -NH2 groups inside the pore wall, whereas the solvated compound possesses a nonporous structure with DMF molecules on the metal centers. The amino group was postmodified through Schiff base condensation by pyridine-2-carboxaldehyde and palladium was anchored on that site. The modified framework has been utilized for the Suzuki cross-coupling reaction. The compound shows high activity towards the C-C cross-coupling reaction with good yields and turnover frequencies. Gas adsorption studies showed that the desolvated compound had permanent porosity and was microporous in nature with a BET surface area of 2052 m(2) g(-1). The material also possesses good CO2 (8 wt%) and H-2 (1.87 wt%) adsorption capabilities.
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