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Issue 7, 2020
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Hexafluorosilicate anion in the formation of a coordination cage: anion competition

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Abstract

The construction of a coordination cage in a system of dual anions including hexafluorosilicate was investigated. The self-assembly of Cu(BF4)2 with L in the presence of (NH4)2SiF6 gives rise to a cage of [(SiF6)@Cu2L4](BF4)2, whereas the reaction of CuX2 (X = NO3 and ClO4) with L in the presence of (NH4)2SiF6 yields a cage of [(SiF6)@Cu2L4](SiF6). The anion exchange of [(SiF6)@Cu2L4](BF4)2 with NaPF6 in acetone gives rise to a 2D structure of [Cu(PF6)2L2]·C3H6O. Significant catalytic effects on catechol oxidation catalysis in dichloromethane were observed in the order [(SiF6)@Cu2L4](BF4)2·MeOH > [(SiF6)@Cu2L4](SiF6)·6MeOH ≫ [Cu(PF6)2L2]·C3H6O > Cu(BF4)2. The oxidation catalysis reactions using the coordination cages were efficiently completed within 20 min at 40 °C, the performance of which ranks among the most efficient yet recorded.

Graphical abstract: Hexafluorosilicate anion in the formation of a coordination cage: anion competition

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Supplementary files

Article information


Submitted
04 Dec 2019
Accepted
13 Feb 2020
First published
15 Feb 2020

Inorg. Chem. Front., 2020,7, 1546-1552
Article type
Research Article

Hexafluorosilicate anion in the formation of a coordination cage: anion competition

J. Lee, S. Park, D. Kim, Y. Lee and O. Jung, Inorg. Chem. Front., 2020, 7, 1546
DOI: 10.1039/C9QI01581G

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