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Polyoxometalates 2023, 2(4): 9140045 https://doi.org/10.26599/POM.2023.9140045
Research Article | Open Access | Issue | Published: 11 December 2023

Tetrameric cubane Al9Ln7 (Ln = Ce, Pr, Nd) clusters as aldol addition catalysts

Show Author's Information Xiao-Yu Liu1,2,§,  Yinghua Yu2,§,  Yi-Fan Sun2,  Wei-Hui Fang2 ( ),  Jian Zhang2
College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

§ Xiao-Yu Liu and Yinghua Yu contributed equally to this work.

Keywords:
aluminum, clusters, heterometallic, cubane, aldol addition
Cite this article:
Liu X-Y, Yu Y, Sun Y-F, et al. Tetrameric cubane Al9Ln7 (Ln = Ce, Pr, Nd) clusters as aldol addition catalysts. Polyoxometalates, 2023, 2(4): 9140045. https://doi.org/10.26599/POM.2023.9140045
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Abstract Full text Electronic supplementary material About this article

Studies on the preparation, structures, and properties of heterometallic complexes are currently of great interest because of their emergent synergistic properties. Although both rare earth and aluminum oxo clusters have been developed, only a few heterometallic compounds combine the two clusters. In this study, using “ligand-controlled partial hydrolysis”, we synthesize three hat-shaped cationic Al9Ln7 (Ln = Ce, Pr, Nd) clusters comprising tetrameric cubane units. Their unique vertex-to-edge-sharing arrangements have not been reported in either rare earth or aluminum oxo clusters. Apart from single-crystal X-ray diffraction, these compounds were characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction, thermogravimetric analysis, and energy dispersive spectroscopy. Al9Ln7 clusters could serve as efficient catalysts for aldol condensation reactions between acetone and p-nitrobenzaldehyde under mild conditions, with an excellent yield of 86% by AlOC-129Ce.


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Electronic supplementary material
About this article

Tetrameric cubane Al9Ln7 (Ln = Ce, Pr, Nd) clusters as aldol addition catalysts

Show Author's information Xiao-Yu Liu1,2,§, Yinghua Yu2,§, Yi-Fan Sun2, Wei-Hui Fang2 ( ), Jian Zhang2
College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

§ Xiao-Yu Liu and Yinghua Yu contributed equally to this work.

Abstract

Studies on the preparation, structures, and properties of heterometallic complexes are currently of great interest because of their emergent synergistic properties. Although both rare earth and aluminum oxo clusters have been developed, only a few heterometallic compounds combine the two clusters. In this study, using “ligand-controlled partial hydrolysis”, we synthesize three hat-shaped cationic Al9Ln7 (Ln = Ce, Pr, Nd) clusters comprising tetrameric cubane units. Their unique vertex-to-edge-sharing arrangements have not been reported in either rare earth or aluminum oxo clusters. Apart from single-crystal X-ray diffraction, these compounds were characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction, thermogravimetric analysis, and energy dispersive spectroscopy. Al9Ln7 clusters could serve as efficient catalysts for aldol condensation reactions between acetone and p-nitrobenzaldehyde under mild conditions, with an excellent yield of 86% by AlOC-129Ce.

Keywords: aluminum, clusters, heterometallic, cubane, aldol addition

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Publication history

Received: 05 September 2023
Revised: 26 October 2023
Accepted: 21 November 2023
Published: 11 December 2023
Issue date: December 2023

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© The Author(s) 2023. Polyoxometalates published by Tsinghua University Press.

Acknowledgements

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 22371278 and 92061104), Natural Science Foundation of Fujian Province (No. 2021J06035), and Youth Innovation Promotion Association CAS (No. Y2018081).

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