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

Authors :: Zhou W
Ogiwara N
Weng Z
Zhao C
Yan L
Kikukawa Y
Uchida S
Source :: Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2022 Nov 10; Vol. 58 (90), pp. 12548-12551. Date of Electronic Publication: 2022 Nov 10.
Publication Year :: 2022
Abstract: Herein we present the first example of a vanadium-substituted δ-Keggin Al <subscript>13</subscript> -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.

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