Cation‐Directed Host–Guest Assembly and Reversible Wheel to Cluster Interconversion in a 20‐Molybdate System

ABSTRACT We report on the synthesis and structural characterization of the polyoxo‐20‐molybdate wheel, [Mo VI 20 O 60 {AsO 2 (CH 3 ) 2 } 12 ] 12− ( Mo 20 ), which can be isolated with an empty cavity (diameter ca. 2 nm) or containing two dimethylarsinate guests, depending on the type of cations used during synthesis. The polyanion Mo 20 was characterized by single‐crystal XRD, FT‐IR, and TGA, and in solution by multinuclear NMR ( 1 H, 13 C, 95 Mo) and 1 H DOSY, as well as x‐ray scattering (SWAXS) and mass spectrometry (ESI‐MS). We demonstrated a fast, quantitative, and fully reversible transformation of Mo 20 to [Mo VI 4 O 12 (OH){AsO 2 (CH 3 ) 2 }] 2− ( Mo 4 ) in aqueous solution, whereas Mo 20 is cleanly and quantitatively recrystallized from such solution, indicating a unique phenomenon, which is fully supported by all experimental techniques used as well as DFT and MD calculations.

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Publication Details

Journal
Chemistry - A European Journal
Published
2026-05-22
DOI
https://doi.org/10.1002/chem.71141
Primary Topic
Polyoxometalates: Synthesis and Applications
Type
article
Field-Weighted Citation Impact
0.00

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article

Cation‐Directed Host–Guest Assembly and Reversible Wheel to Cluster Interconversion in a 20‐Molybdate System

Emmanuel Cadot, Mohamed Haouas, Albert Masip‐Sánchez, Nikolai Kuhnert et al.
Chemistry - A European Journal
Polyoxometalates: Synthesis and Applications
article

Cation‐Directed Host–Guest Assembly and Reversible Wheel to Cluster Interconversion in a 20‐Molybdate System

Emmanuel Cadot, Mohamed Haouas, Albert Masip‐Sánchez, Nikolai Kuhnert, Arun Pal, Vinaya Siby, Jana Hölscher, Alisher Kuanysh, Josep M. Poblet, Maria Boltoeva, Ulrich Kortz, Pierre Bauduin, Xavier López
article en

Abstract

ABSTRACT We report on the synthesis and structural characterization of the polyoxo‐20‐molybdate wheel, [Mo VI 20 O 60 {AsO 2 (CH 3 ) 2 } 12 ] 12− ( Mo 20 ), which can be isolated with an empty cavity (diameter ca. 2 nm) or containing two dimethylarsinate guests, depending on the type of cations used during synthesis. The polyanion Mo 20 was characterized by single‐crystal XRD, FT‐IR, and TGA, and in solution by multinuclear NMR ( 1 H, 13 C, 95 Mo) and 1 H DOSY, as well as x‐ray scattering (SWAXS) and mass spectrometry (ESI‐MS). We demonstrated a fast, quantitative, and fully reversible transformation of Mo 20 to [Mo VI 4 O 12 (OH){AsO 2 (CH 3 ) 2 }] 2− ( Mo 4 ) in aqueous solution, whereas Mo 20 is cleanly and quantitatively recrystallized from such solution, indicating a unique phenomenon, which is fully supported by all experimental techniques used as well as DFT and MD calculations.

Chemistry - A European Journal
Centre National de la Recherche Scientifique (FR), Constructor University (DE), Université de Montpellier (FR), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), CEA Marcoule (FR), Institut de Chimie Séparative de Marcoule (FR), Institut Lavoisier de Versailles (FR), Universitat Rovira i Virgili (ES)
Generalitat de Catalunya
Openalex Percentile: Top 11%
Polyoxometalates: Synthesis and Applications
DOIOpen Access PDFOpenAlex
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