Supramolecular Host–Guest Assemblies of [M<sub>6</sub>Cl<sub>14</sub>]<sup>2–</sup>, M = Mo, W, Clusters with γ-Cyclodextrin for the Development of CLUSPOMs
Anton A. Ivanov,
Pavel A. Abramov,
Mohamed Haouas,
Yann Molard,
Stéphane Cordier,
Clément Falaise,
Emmanuel Cadot,
Michael A. Shestopalov
Affiliations
Anton A. Ivanov
Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
Pavel A. Abramov
Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
Mohamed Haouas
Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France
Yann Molard
Université de Rennes, CNRS, ISCR—UMR 6226, ScanMAT—UAR 2025, 35000 Rennes, France
Stéphane Cordier
Université de Rennes, CNRS, ISCR—UMR 6226, ScanMAT—UAR 2025, 35000 Rennes, France
Clément Falaise
Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France
Emmanuel Cadot
Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France
Michael A. Shestopalov
Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
Host–guest assemblies open up opportunities for developing novel functional CLUSPOM multicomponent systems based on transition metal clusters (CLUS), polyoxometalates (POMs) and macrocyclic organic ligands. In water–ethanol solution γ-cyclodextrin (γ-CD) interacts with halide metal clusters [M6Cl14]2– (M = Mo, W) to form sandwich-type structures. The supramolecular association between the clusters and CDs, however, remains weak in solution, and the interactions are not strong enough to prevent the hydrolysis of the inorganic guest. Although analysis of the resulting crystal structures reveals inclusion complexation, 1H NMR experiments in solution show no specific affinity between the two components. The luminescent properties of the host–guest compounds in comparison with the initial cluster complexes are also studied to evaluate the influence of CD.
