Hexafluorosilicate anion in the formation of a coordination cage: anion competition?
Inorganic Chemistry Frontiers Pub Date: 2020-02-15 DOI: 10.1039/C9QI01581G
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.
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Journal Name：Inorganic Chemistry Frontiers
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CAS no.: 89640-58-4
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