Issue 22, 2022

Nanocage-based {In2Tm2}-organic framework for efficiently catalyzing the cycloaddition reaction of CO2 with epoxides and Knoevenagel condensation

Abstract

High density active sites and chemical stability for prepared MOFs are the prerequisites for their industrial applications, which prompted us to synthesize cluster-based metal–organic compounds. The combination of [In2Tm22-OH)2(CO2)10(H2O)2] clusters ({In2Tm2}) and the functional ligand 2,6-bis(2,4-dicarboxylphenyl)-4-(4-carboxylphenyl)pyridine (H5BDCP) produced an extremely stable nanoporous skeleton of {(Me2NH2)2[In2Tm2(BDCP)22-OH)2(H2O)2]·2DMF·3H2O}n (NUC-56), whose inner surface is functionalized by Lewis acidic and basic groups of metal centers, μ2-OH groups and Npyridine atoms. To the best of our knowledge, NUC-56 is a rarely reported planar-cluster-based {In2Ln2}-organic framework, which possesses an excellent confined pore environment with high porosity, large specific surface area and abundant co-existing Lewis acid and base sites. Consequently, NUC-56a exhibited a good catalytic performance for the cycloaddition reaction of various epoxides with CO2 and the Knoevenagel condensation reaction of different aldehydes and malononitrile under mild conditions. Therefore, this study can provide some guidance for the precise design of practical MOFs with excellent catalytic, stability and regeneration performances through the participation of rare earth ions.

Graphical abstract: Nanocage-based {In2Tm2}-organic framework for efficiently catalyzing the cycloaddition reaction of CO2 with epoxides and Knoevenagel condensation

Supplementary files

Article information

Article type
Research Article
Submitted
16 Jūn. 2022
Accepted
13 Sept. 2022
First published
14 Sept. 2022

Inorg. Chem. Front., 2022,9, 5788-5798

Nanocage-based {In2Tm2}-organic framework for efficiently catalyzing the cycloaddition reaction of CO2 with epoxides and Knoevenagel condensation

H. Lv, H. Chen, T. Hu and X. Zhang, Inorg. Chem. Front., 2022, 9, 5788 DOI: 10.1039/D2QI01271E

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