resumo
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.
palavras-chave
CARBON-DIOXIDE CAPTURE; HETEROGENEOUS CATALYTIC EPOXIDATION; PALLADIUM(II) COMPLEXES; COORDINATION POLYMERS; CARBAPALLADACYCLE COMPLEX; MESOPOROUS SILICA; HYDROGEN-STORAGE; HIGHLY EFFICIENT; PD NANOPARTICLES; HECK REACTIONS
categoria
Chemistry
autores
Sen, R; Saha, D; Koner, S; Brandao, P; Lin, Z
nossos autores
Paula Cristina Ferreira da Silva Brandão
Investigador Auxiliar
Rupam Sem
Bolseiro de investigação
Zhi Lin
Investigador Principalagradecimentos
R.S. thanks the FCT for a post-doctoral grant (SFRH/BPD/71798/2010). The Portuguese group is financially supported by FEDER through the Programa Operacional Factores de Competitividade-COMPETE and national funds through the FCT-Fundacao para a Ciencia e Tecnologia within CICECO project FCOMP-01-0124-FERDER-037271 (FCT Ref. Pest-C/CTM/LA0011/2013).