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Issue 1, 2016
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Hexagonal Co6 and zigzag Co4 cluster based magnetic MOFs with a pcu net for selective catalysis

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Abstract

Two hydrophobic 3D cobalt-cluster based magnetic MOFs, [Co3(pimdc)2(H2O)6]·5H2O (1) and Co2(Hpimdc)2 (2) (H3pimdc = 2-propyl-imidazole-4,5-dicarboxylic acid), have been hydrothermally synthesized and magnetically characterized. Both of them exhibit a regular pcu net with hexagonal Co6 and zigzag Co4 clusters as 6-connected nodes, respectively. The magnetic studies indicate that 1 displays predominant antiferromagnetic interactions within the Co3(pimdc) triangle, while 2 shows spin-canting antiferromagnetic behaviour with larger canting angles. Furthermore, after heating under vacuum conditions, activated 1 exhibits an excellent catalytic selectivity in the allylic oxidation reaction of cyclohexene to form an α,β-unsaturated ketone, which indicates that the opened Co(II) sites play a significant role in the heterogeneous catalytic process.

Graphical abstract: Hexagonal Co6 and zigzag Co4 cluster based magnetic MOFs with a pcu net for selective catalysis

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Supplementary files

Article information


Submitted
23 Aug 2015
Accepted
20 Oct 2015
First published
04 Nov 2015

Inorg. Chem. Front., 2016,3, 78-85
Article type
Research Article
Author version available

Hexagonal Co6 and zigzag Co4 cluster based magnetic MOFs with a pcu net for selective catalysis

R. Yao, X. Qiao, X. Cui, X. Jia and X. Zhang, Inorg. Chem. Front., 2016, 3, 78
DOI: 10.1039/C5QI00159E

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