Selective recognition and extraction of arsenate by a urea-functionalized tripodal receptor from competitive aqueous media. Issue 40 (7th October 2022)

• Record Type: Journal Article
• Authors: Dey, Sandeep Kumar; Gil-Hernández, Beatriz; Gobre, Vivekanand V.; Woschko, Dennis; Harmalkar, Sarvesh S.; Gayen, Firdaus Rahaman; Saha, Biswajit; Goswamee, Rajib Lochan; Janiak, Christoph
• Is Part Of: Dalton transactions. Volume 51:Issue 40(2022)
• Page Start: 15239
• Page End: 15245
• Publication Date: 2022-10-07
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2dt02281h
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A urea-functionalized tripodal receptor facilitated the selective extraction of pentavalent arsenate trianion (AsO4 3− ) from aqueous media in the presence of several competitive anions by encapsulation of the oxoanion within a capsular assembly. 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 (AsO4 3− ) from water in the presence of competitive oxoanions and halides. The X-ray structure showed encapsulation of AsO4 3− in a π-stacked dimeric capsular assembly of the receptor, the first crystallography-based example of pentavalent AsO4 3− trianion recognition by a HBD receptor.