A High-Nuclearity “Celtic-Ring” Isopolyoxotungstate, [H<sub>12</sub>W<sub>36</sub>O<sub>120</sub>]<sup>12-</sup>, That Captures Trace Potassium Ions
De‐Liang LongDepartment of Chemistry, The University of Glasgow, Glasgow G12 8QQ, U.K., and Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames, Iowa 50011Hamera AbbasDepartment of Chemistry, The University of Glasgow, Glasgow G12 8QQ, U.K., and Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames, Iowa 50011Paul KögerlerDepartment of Chemistry, The University of Glasgow, Glasgow G12 8QQ, U.K., and Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames, Iowa 50011Leroy CroninDepartment of Chemistry, The University of Glasgow, Glasgow G12 8QQ, U.K., and Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames, Iowa 50011
2004en
ABI
Аннотация
A high-nuclearity {W36} isopolyoxotungstate cluster, [H12W36O120]12-, with a triangular shape has been isolated by using an encapsulating organic cation, protonated triethanolamine. In analogy to an 18-crown-6 crown ether, the cluster captures a potassium ion, present in trace amounts in the reaction system, within its cavity. DFT calculations suggest that the distribution of partial atomic charges over the oxygen framework shows maxima at certain "hotspot" sites, which imply possible routes for further cluster growth based on the {W36} system.
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