Steric hindrance effects in tripodal ligands for extraction and back-extraction of Ag+

Yuki Hiruta; Takafumi Watanabe; Etsuko Nakamura; Naoko Iwasawa; Hiroyasu Sato; Kensaku Hamada; Daniel Citterio; Koji Suzuki

doi:10.1039/c3ra45700a

Steric hindrance effects in tripodal ligands for extraction and back-extraction of Ag⁺

Yuki Hiruta, Takafumi Watanabe, Etsuko Nakamura, Naoko Iwasawa, Hiroyasu Sato, Kensaku Hamada, Daniel Citterio, Koji Suzuki

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A novel series of tripodal ligands with thiophenylether arms connected to an anchoring nitrogen has been investigated. Seven tripodal ligands were synthesized by combining methyl, isopropyl, and tert-butyl residue bearing thiophenylether sites as groups with different steric hindrance effects. The tripodal ligands allowed for the extraction of Ag⁺ ions from the aqueous phase into a chloroform phase by forming 1:1 complexes with Ag ⁺. Back-extraction was performed with 1 M HNO₃ aqueous solution. Each ligand showed different extraction and back-extraction efficiency for Ag⁺, affected by changes in steric hindrance caused by the various combinations of sidearms. These results are further supported by X-ray single crystal structural analysis.

Original language	English
Pages (from-to)	9791-9798
Number of pages	8
Journal	RSC Advances
Volume	4
Issue number	19
DOIs	https://doi.org/10.1039/c3ra45700a
Publication status	Published - 2014

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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abstract = "A novel series of tripodal ligands with thiophenylether arms connected to an anchoring nitrogen has been investigated. Seven tripodal ligands were synthesized by combining methyl, isopropyl, and tert-butyl residue bearing thiophenylether sites as groups with different steric hindrance effects. The tripodal ligands allowed for the extraction of Ag+ ions from the aqueous phase into a chloroform phase by forming 1:1 complexes with Ag +. Back-extraction was performed with 1 M HNO3 aqueous solution. Each ligand showed different extraction and back-extraction efficiency for Ag+, affected by changes in steric hindrance caused by the various combinations of sidearms. These results are further supported by X-ray single crystal structural analysis.",

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AU - Hiruta, Yuki

AU - Watanabe, Takafumi

AU - Nakamura, Etsuko

AU - Iwasawa, Naoko

AU - Sato, Hiroyasu

AU - Hamada, Kensaku

AU - Citterio, Daniel

AU - Suzuki, Koji

PY - 2014

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Steric hindrance effects in tripodal ligands for extraction and back-extraction of Ag⁺

Abstract

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