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      Encapsulation of Arenes within a Porous Molybdenum Oxide {Mo132 } Nanocapsule.

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          Abstract

          The use of confined space to modulate chemical reactivity and to sequester organic compounds spans significant disciplines in chemistry and biology. Here, the inclusion and assembly of arenes into a water-soluble porous metal oxide nanocapsule [{(MoVI )MoV5 O21 (H2 O)6 }12 {MoV2 O4 (CH3 COO)}30 ]42- (Mo132 ) is reported. The uptake of benzene, halobenzenes, alkylbenzenes, phenols, and other derivatives was studied by NMR, where it was possible to follow the encapsulation process from the outside of the capsule through its pores and then into the interior. The importance of size or shape of the arenes, and various intermolecular bond interactions contributed by the benzene substituent on the encapsulation process was studied, showing the importance of π-π stacking and CH-π interactions. Furthermore, by using NOESY, ROESY, and HOESY NMR techniques it was possible to understand the interaction of the encapsulated arenes and the acetate linkers or ligands that line the interior of the Mo132 capsule.

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          Author and article information

          Journal
          Chemistry
          Chemistry (Weinheim an der Bergstrasse, Germany)
          Wiley
          1521-3765
          0947-6539
          Oct 17 2016
          : 22
          : 43
          Affiliations
          [1 ] Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel.
          [2 ] Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel.
          [3 ] Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel. ronny.neumann@weizmann.ac.il.
          Article
          10.1002/chem.201603596
          27576915
          9520bfab-fa29-4bb5-9b8d-58d2ef5f0fbe
          History

          polyoxometalate,NMR spectroscopy,arenes,encapsulation,keplerates

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