Bifunctional Gyroidal MOFs: Highly Efficient Lewis Base and Lewis Acid Catalysts.

Authors :: Li YY
He TY
Dai RR
Huang YL
Zhou XP
Chen T
Li D
Source :: Chemistry, an Asian journal [Chem Asian J] 2019 Oct 15; Vol. 14 (20), pp. 3682-3687. Date of Electronic Publication: 2019 Jul 30.
Publication Year :: 2019
Abstract: A family of gyroidal metal-organic frameworks (STUs) composited with transition metal ions and bi-imidazolate ligands (BIm) were prepared and applied as both Lewis base and acid catalysts. Benefiting from the intrinsic basicity of the ligands and the Lewis acidic sites of the open metal centres, the STUs materials show excellent catalytic activities as Lewis base for the Knoevenagel condensation reaction between various aldehydes and malononitrile, and as Lewis acid for cyanosilylation reactions. Among these STUs, STU-4 (Ni(BIm)) shows the best catalytic efficiency (conversions >99 %) in both Knoevenagel condensation and cyanosilylation reactions under mild conditions, providing thus an advanced material for both Lewis base and Lewis acid catalysis.<br /> (© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

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