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Hexagonal Co6 and zigzag Co4 cluster based magnetic MOFs with a pcu net for selective catalysis†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2015-11-04 00:00:00 , DOI: 10.1039/c5qi00159e
Ru-Xin Yao 1, 2, 3, 4 , Xiao-Hui Qiao 1, 2, 3, 4 , Xin Cui 1, 2, 3, 4 , Xiao-Xia Jia 1, 2, 3, 4 , Xian-Ming Zhang 1, 2, 3, 4
Affiliation  

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.

中文翻译:

基于六角形Co 6和之字形Co 4簇的磁性MOF,带有pcu网用于选择性催化

两个基于疏水性3D钴簇的磁性MOF,[Co 3(pimdc)2(H 2 O)6 ]·5H 2 O(1)和Co 2(Hpimdc)22)(H 3 pimdc = 2-propyl-咪唑(4,5-二羧酸)已被水热合成并进行了磁学表征。两者显示出常规PCU净具有六角形钴6和锯齿钴4簇6连接的节点,分别。磁性研究表明1在Co 3中显示出主要的反铁磁相互作用(pimdc)三角形,而2则显示具有较大倾斜角度的自旋倾斜反铁磁行为。此外,在真空条件下加热后,活化的1在环己烯的烯丙基氧化反应中形成α,β-不饱和酮表现出极好的催化选择性,这表明打开的Co(II)位在非均相催化中起着重要作用。过程。
更新日期:2015-11-04
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