Sc2(pydc)2 unit based 1D, 2D and 3D metal–organic frameworks as heterogeneous Lewis acid catalysts for cyanosilylation

Yu Cao; Ziqian Zhu; Jianing Xu; Li Wang; Jiayin Sun; Xiaobo Chen; Yong Fan

doi:10.1039/C4DT03221G

Sc₂(pydc)₂ unit based 1D, 2D and 3D metal–organic frameworks as heterogeneous Lewis acid catalysts for cyanosilylation†

Yu Cao,^a Ziqian Zhu,^a Jianing Xu,^a Li Wang,^a Jiayin Sun,*^b Xiaobo Chen^c and Yong Fan*^a

* Corresponding authors

^a State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
E-mail: mrfy@jlu.edu.cn
Fax: +86-431-85168439

^b School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing, Anhui 246011, P. R. China
E-mail: jiayin_sun@163.com
Fax: +86-556-5500690

^c Department of Materials Engineering, Monash University, Clayton, VIC 3800, Australia

Abstract

Three scandium metal–organic frameworks (Sc-MOFs), [Sc(pydc)(Hpydc)(H₂O)]·H₂O (1), [Sc₂(pydc)₃(H₂O)₄]·5H₂O (2) and [Sc(pydc)(H₂O)(NO₃)] (3) with similar Sc₂(pydc)₂ building unit were prepared by using 2,3-pyridinedicarboxylic acid (H₂pydc) ligand under hydrothermal conditions. Compound 1 exhibits a ladder-shaped chain with Sc₂(pydc)₂ units, which further construct a supramolecular characteristic with water molecules via hydrogen bond. Compound 2 features a waved layer made up of pydc²⁻ ligands and two types of crystallographically different Sc(III) ions, among which Sc2 and pydc²⁻ ligands constructed the Sc₂(pydc)₂ units. In compound 3, left and right helixes were alternately linked by the Sc₂(pydc)₂ units forming a hexagonal network with nbo-a topology. All the prepared compounds present effective heterogeneous Lewis acid catalytic functionality for the cyanosilylation of aldehyde.

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Article information

DOI: https://doi.org/10.1039/C4DT03221G
Article type: Paper
Submitted: 19 Oct 2014
Accepted: 14 Nov 2014
First published: 19 Nov 2014

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Dalton Trans., 2015,44, 1942-1947

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Sc₂(pydc)₂ unit based 1D, 2D and 3D metal–organic frameworks as heterogeneous Lewis acid catalysts for cyanosilylation

Y. Cao, Z. Zhu, J. Xu, L. Wang, J. Sun, X. Chen and Y. Fan, Dalton Trans., 2015, 44, 1942 DOI: 10.1039/C4DT03221G

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