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Issue 10, 2018
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Efficient heterogeneous catalysis by dual ligand Zn(II)/Cd(II) MOFs for the Knoevenagel condensation reaction: adaptable synthetic routes, characterization, crystal structures and luminescence studies

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Abstract

Dual ligand MOFs {[Zn(ADA)(L)]·2H2O}n (1) and {[Cd(ADA)(L)]·2H2O}n (2) involving Zn(II)/Cd(II) metal centres and flexible 1,3-adamantanediacetic acid (H2ADA)/pyridyl based Schiff base ligand, 4-pyridylcarboxaldehydeisonicotinoylhydrazone (L) as linkers have been efficiently synthesized including green mechanochemical methods and characterised using various analytical methods. Crystal structures of both MOFs, and luminescence and semiconducting properties have also been investigated. Both materials were exploited for efficient catalytic activity in the Knoevenagel condensation reaction for a variety of substrates with good yields and recyclability under ambient reaction conditions in aqueous media. Probably the Lewis acidic metal centre and the presence of amide functionality in the L of the MOFs are cooperatively involved in the efficient condensation reaction by these catalytic materials.

Graphical abstract: Efficient heterogeneous catalysis by dual ligand Zn(ii)/Cd(ii) MOFs for the Knoevenagel condensation reaction: adaptable synthetic routes, characterization, crystal structures and luminescence studies

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Publication details

The article was received on 22 Jul 2018, accepted on 30 Aug 2018 and first published on 30 Aug 2018


Article type: Research Article
DOI: 10.1039/C8QI00744F
Citation: Inorg. Chem. Front., 2018,5, 2630-2640
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    Efficient heterogeneous catalysis by dual ligand Zn(II)/Cd(II) MOFs for the Knoevenagel condensation reaction: adaptable synthetic routes, characterization, crystal structures and luminescence studies

    B. Parmar, P. Patel, V. Murali, Y. Rachuri, R. I. Kureshy, N. H. Khan and E. Suresh, Inorg. Chem. Front., 2018, 5, 2630
    DOI: 10.1039/C8QI00744F

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