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

Sandeep Kumar Dey Beatriz Gil-HernándezVivekanand V GobreDennis WoschkoSarvesh S HarmalkarFirdaus Rahaman GayenBiswajit SahaRajib Lochan GoswameeUlf Dietrich Kahlert

Published in: Dalton transactions (Cambridge, England : 2003) (2022)

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 (AsO 4 3- ) from water in the presence of competitive oxoanions and halides. The X-ray structure showed encapsulation of AsO 4 3- in a π-stacked dimeric capsular assembly of the receptor, the first crystallography-based example of pentavalent AsO 4 3- trianion recognition by a HBD receptor.

Keyphrases

oxidative stress
high resolution
binding protein
computed tomography
mass spectrometry