Issue 42, 2020

Flexibility and anion exchange of [(X)@Pd2L4] cages for recognition of size and charge of polyatomic anions

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

Supplementary files

Article information

Article type
Paper
Submitted
27 Pha 2020
Accepted
05 Mph 2020
First published
07 Mph 2020

Dalton Trans., 2020,49, 15002-15008

Flexibility and anion exchange of [(X)@Pd2L4] cages for recognition of size and charge of polyatomic anions

J. Lee, S. Lim, D. Kim, O. Jung and Young-A. Lee, Dalton Trans., 2020, 49, 15002 DOI: 10.1039/D0DT03005H

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