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Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
Published on: August 23, 2018
Cooperative effect of "flexible" interaction and "flexible" framework in reversible intake and removal of aromatic
Kumari Suman1, Rajnikant, Vivek K Gupta
1Department of Chemistry, Birla Institute of Technology and Science, Pilani, Pilani Campus, Rajasthan, India.
Abstract:
The metal-organic frameworks of amide based "flexible" ligands has been explored. The reaction of bis-(3-pyridyl)ethanediamide with Cu(PF6)2 resulted in a 1D looped chain, where the PF6(-) anions interact with the amide groups of the chains. This resulted in unavailability of space for guest inclusion in the loops. The exchange of PF6(-) ion with ClO4(-) ion resulted in the intake of aromatic guest molecules, which were monitored by IR and UV-Vis spectroscopy. The capability of the flexible ethyl spacer of bis-(3-pyridyl)ethanediamide to adjust the conformation according to the requirements of the other components of the networks is observed in the present study. This resulted in reversible inclusion and removal of guest molecules triggered by the exchange of anions.
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