Issue 40, 2022
From the journal:

Dalton Transactions

Selective recognition and extraction of arsenate by a urea-functionalized tripodal receptor from competitive aqueous media†

Sandeep Kumar Dey, ORCID logo *ab   Beatriz Gil-Hernández, ORCID logo c   Vivekanand V. Gobre,d   Dennis Woschko, ORCID logo e   Sarvesh S. Harmalkar,d   Firdaus Rahaman Gayen,ab   Biswajit Saha, ORCID logo ab   Rajib Lochan Goswameeab  and  Christoph Janiak ORCID logo e  

* Corresponding authors

a Materials Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
E-mail: sandeep@neist.res.in

b Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, Uttar Pradesh, India

c Departmento de Química, Facultad de Ciencias, Sección Química, Universidad de La Laguna, La Laguna, Tenerife, Spain
E-mail: beagher@ull.es

d School of Chemical Sciences, Goa University, Taleigao Plateau, Goa 403206, India
E-mail: vvgobre@unigoa.ac.in

e Institute of Inorganic and Structural Chemistry, Heinrich-Heine University, Düsseldorf, Germany
E-mail: janiak@uni.duesseldorf.de

Abstract

A second-generation hydrogen bond donor (HBD) anion receptor with an inner amide cavity and an outer urea cavity can selectively and efficiently extract arsenate (AsO43−) from water in the presence of competitive oxoanions and halides. The X-ray structure showed encapsulation of AsO43− in a π-stacked dimeric capsular assembly of the receptor, the first crystallography-based example of pentavalent AsO43− trianion recognition by a HBD receptor.

Graphical abstract: Selective recognition and extraction of arsenate by a urea-functionalized tripodal receptor from competitive aqueous media

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Article information

DOI
https://doi.org/10.1039/D2DT02281H
Article type
Communication
Submitted
13 Jul 2022
Accepted
30 Sep 2022
First published
30 Sep 2022

Dalton Trans., 2022,51, 15239-15245

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Selective recognition and extraction of arsenate by a urea-functionalized tripodal receptor from competitive aqueous media

S. K. Dey, B. Gil-Hernández, V. V. Gobre, D. Woschko, S. S. Harmalkar, F. R. Gayen, B. Saha, R. L. Goswamee and C. Janiak, Dalton Trans., 2022, 51, 15239 DOI: 10.1039/D2DT02281H

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