Vanadium-substituted polycationic Al-oxo cluster in a porous ionic crystal exhibiting Lewis acidity

Wei Zhou; Naoki Ogiwara; Zhewei Weng; Congcong Zhao; Likai Yan; Yuji Kikukawa; Sayaka Uchida

doi:10.1039/d2cc03545f

Vanadium-substituted polycationic Al-oxo cluster in a porous ionic crystal exhibiting Lewis acidity

Chem Commun (Camb). 2022 Nov 10;58(90):12548-12551. doi: 10.1039/d2cc03545f.

Authors

Wei Zhou¹, Naoki Ogiwara¹, Zhewei Weng¹, Congcong Zhao², Likai Yan², Yuji Kikukawa³, Sayaka Uchida¹

Affiliations

¹ Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan. cogiwara@g.ecc.u-tokyo.ac.jp.
² Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.
³ Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan.

PMID: 36250509
DOI: 10.1039/d2cc03545f

Abstract

Herein we present the first example of a vanadium-substituted δ-Keggin Al₁₃-based (Al28V4) porous Ionic crystal (PIC) (Al28V4-PW9V3). Structural and theoretical studies suggested that Al28V4 may exhibit Lewis acidity, which was confirmed by acetalization reaction with Al28V4-PW9V3 as a solid catalyst and investigations with pyridine or 2,6-lutidine as basic probe molecules. A comparative study with the δ-Keggin Al13 monomer based PIC indicated that the vanadium-substitution gave rise to the Lewis acidity.