Selective anion extraction and recovery using a FeII 4L4 cage
Zhang, Dawei and Ronson, Tanya K. and Mosquera, Jesús and Martinez, Alexandre and Nitschke, Jonathan R. (2018) Selective anion extraction and recovery using a FeII 4L4 cage. Angewandte Chemie - International Edition, 57 (14). pp. 3717-3721. ISSN 1521-3773 (https://doi.org/10.1002/anie.201800459)
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Abstract
Selective anion extraction is useful for the recovery and purification of valuable chemicals, and in the removal of pollutants from the environment. Here we report that FeII 4L4 cage 1 is able to extract an equimolar amount of ReO4 −, a high-value anion and a nonradioactive surrogate of TcO4 −, from water into nitromethane. Importantly, the extraction was efficiently performed even in the presence of 10 other common anions in water, highlighting the high selectivity of 1 for ReO4 −. The extracted guest could be released into water as the cage disassembled in ethyl acetate, and then 1 could be recycled by switching the solvent to acetonitrile. The versatile solubility of the cage also enabled complete extraction of ReO4 − (as the tetrabutylammonium salt) from an organic phase into water by using the sulfate salt of 1 as the extractant.
ORCID iDs
Zhang, Dawei, Ronson, Tanya K., Mosquera, Jesús ORCID: https://orcid.org/0000-0001-6878-4567, Martinez, Alexandre and Nitschke, Jonathan R.;-
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Item type: Article ID code: 74224 Dates: DateEvent26 March 2018Published23 February 2018Published Online2 February 2018AcceptedSubjects: Science > Chemistry Department: Faculty of Science > Pure and Applied Chemistry Depositing user: Pure Administrator Date deposited: 13 Oct 2020 10:46 Last modified: 06 Nov 2024 06:53 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/74224