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Research Article | Open Access

New {Co9} cluster-added banana-shaped polyoxometalate modified by B atom

Hai-Lou Li, Guo-Yu Yang ( )
MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
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Abstract

In this study, a new {Co9} cluster-added polyoxometalate (POM) Cs3K4Na5H6[BO(OH)2Co9O(OH)(H2O)3(GeW6O26)(B-α-GeW9O34)2]·22H2O (1) was successfully synthesized in the presence of inorganic boron sources under hydrothermal conditions. Its structural characterizaiton is realized using single-crystal X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, and powder X-ray diffraction. Compound 1 represents the first Co-added POM bonded by a B atom, and its polyoxoanion is constructed by fusing together with one hexalacunary GeW6O26 and two trilacunary B-α-GeW9O34 fragments in an unprecedented V-shaped {Co9} cluster. Additionally, compound 1 is an efficient catalyst for accelerating the Knoevenagel condensation of various aldehydes with malonitrile.

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Keywords

polyoxometalate (POM)Co-added POMbanana-shaped structurehydrothermal synthesis

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Polyoxometalates
Volume 2 Issue 3,
September 2023
Pages 9140034-9140034
DOI: 10.26599/POM.2023.9140034

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Li H-L, Yang G-Y. New {Co9} cluster-added banana-shaped polyoxometalate modified by B atom. Polyoxometalates, 2023, 2(3): 9140034. https://doi.org/10.26599/POM.2023.9140034

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Received: 08 July 2014
Revised: 22 August 2023
Accepted: 01 September 2023
Published: 22 September 2023
© The Author(s) 2023. Polyoxometalates published by Tsinghua University Press.

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.