resumo
A new phosphonate-based metal organic framework has been synthesized. The structure determined by X-ray crystallography reveals that it has an interesting 8-ring channel 3D structure having the Co-2-dimers as the secondary building unit. Topological analysis shows that it has 10-c uninodal 3D net structure with the Schlafli symbol 3(15).4(22).5(8). The magnetic measurement reveals the tetrahedral coordinated Co-II ion. The compound is highly active towards epoxidation in the presence of air and IBA (isobutyraldehyde). It catalyses almost all types of olefinic substrates with equal efficiency. The compound is highly stable thermally (370 degrees C) and under the reaction conditions as well. After the reaction it can be recovered quite easily and can be used for further reaction without any loss of activity over several cycles.
palavras-chave
METAL-ORGANIC FRAMEWORK; MOLECULAR-OXYGEN; AEROBIC OXIDATION; EPOXIDATION; ACTIVATION; EFFICIENT; OLEFINS; COMPLEXES; ALCOHOLS; NICKEL
categoria
Chemistry
autores
Sen, R; Saha, D; Mal, D; Brandao, P; Rogez, G; Lin, Z
nossos autores
Paula Cristina Ferreira da Silva Brandão
Investigador Auxiliar
Zhi Lin
Investigador Principalagradecimentos
R. S. wishes to thank Fundacao para a Ciencia e a Tecnologia (FCT) for a postdoctoral fellowship (SFRH/BPD/71798/2010). The work was also financially supported by the Programa Operacional Ciencia e Inovacao 2010 (POCI2010), the Fundo Social Europeu (FSE) and the Fundo Europeu de Desenvolvimento Regional (FEDER).