RSC Advances

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

Y Hiruta, T Watanabe, E Nakamura, N Iwasawa…

Index: Hiruta, Yuki; Watanabe, Takafumi; Nakamura, Etsuko; Iwasawa, Naoko; Sato, Hiroyasu; Hamada, Kensaku; Citterio, Daniel; Suzuki, Koji RSC Advances, 2014 , vol. 4, # 19 p. 9791 - 9798

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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+. ...