Flexibility and anion exchange of [(X)@Pd2L4] cages for recognition of size and charge of polyatomic anions?
Dalton Transactions Pub Date: 2020-10-07 DOI: 10.1039/D0DT03005H
Abstract
The self-assembly of Pd(NO3)2 with L (L = 1,2-bis(dimethyl(pyridin-3-yl)silyl)ethane) gives rise to [PdL2](NO3)2 in high yields. Anion exchange of [PdL2](NO3)2 with X? (X? = BF4?, ClO4?, and PF6?) changes the skeleton into a cage of [(X)@Pd2L4](X)3. Successive anion exchange of [(X)@Pd2L4](X)3 (X? = BF4?, ClO4?, and PF6?) with X? (X? = ReO4? and SiF62?) produces [(ReO4)@Pd2L4](ReO4)3 and [(SiF6)@Pd2L4](SiF6), respectively, irrespective of anion charge. The flexible nature and conformation of cages are significantly dependent on the nestled polyatomic anions. Thus, this system can be used as a molecular recognizer of the size and charge of ubiquitous polyatomic anions.
![Graphical abstract: Flexibility and anion exchange of [(X)@Pd2L4] cages for recognition of size and charge of polyatomic anions](http://scimg.chem960.com/usr/1/D0DT03005H.jpg)
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Journal Name：Dalton Transactions
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CAS no.: 89640-58-4
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