title: Coordination structure and extraction behavior of a silver ion with N-substituted-9-aza-3,6,12,15-tetrathiaheptadecanes: significant effect of Ph-C-N framework on the extractability.
abstract: N-Substituted-9-aza-3,6,12,15-tetrathiaheptadecanes having Ph-C-N frameworks (N-R-ATH; R = benzyl (N-Bn-ATH), 4-nitrobenzyl (N-NO2Bn-ATH), and diphenylmethyl (N-Ph2CH-ATH)) were synthesized, and their Ag(i) complexes were structurally characterized. X-Ray crystal structure analyses of [Ag(N-R-ATH)](BF4) (R = Bn and Ph2CH) revealed monomeric tetra-S-coordinated complex cation structures without the N-coordination, and a benzene ring of the N-R group covered over the amine nitrogen atom. The precise extraction analyses of a Ag(i) ion with ATH derivatives (L = N-R-ATHs and N-H-ATH) associated with the (1)H NMR analyses of the [Ag(L)](+) complexes in polar and non-polar solvents revealed that the introduction of the N-substituent significantly enhanced the extractability of Ag(+), due to the "hydrophobic cover" effect by the Ph-C-N framework in the [Ag(N-R-ATH)](+) complexes.
authors.affiliation: Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan. iwatsuki@center.konan-u.ac.jp chayama@konan-u.ac.jp.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Iwatsuki
authors.affiliation: Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan. iwatsuki@center.konan-u.ac.jp chayama@konan-u.ac.jp.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Ichiyama
authors.affiliation: Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan. iwatsuki@center.konan-u.ac.jp chayama@konan-u.ac.jp.
authors.forename: Syogo
authors.initials: S
authors.lastname: Tanooka
authors.affiliation: Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan. iwatsuki@center.konan-u.ac.jp chayama@konan-u.ac.jp.
authors.forename: Mari
authors.initials: M
authors.lastname: Toyama
authors.affiliation: Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan. iwatsuki@center.konan-u.ac.jp chayama@konan-u.ac.jp.
authors.forename: Kosuke
authors.initials: K
authors.lastname: Katagiri
authors.affiliation: Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan.
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Kawahata
authors.affiliation: Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan.
authors.forename: Kentaro
authors.initials: K
authors.lastname: Yamaguchi
authors.affiliation: Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan. iwatsuki@center.konan-u.ac.jp chayama@konan-u.ac.jp.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Danjo
authors.affiliation: Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan. iwatsuki@center.konan-u.ac.jp chayama@konan-u.ac.jp.
authors.forename: Kenji
authors.initials: K
authors.lastname: Chayama