Site-Specific Metal Chelation Facilitates the Unveiling of Hidden Coordination Sites in an Fe II /Fe III -Seamed Pyrogallol[4]arene Nanocapsule

Site-Specific Metal Chelation Facilitates the Unveiling of Hidden Coordination Sites in an Fe II /Fe III -Seamed Pyrogallol[4]arene Nanocapsule

Under suitable conditions, C-alkylpyrogallol[4]arenes (PgCs) arrange into spherical metal-organic nanocapsules (MONCs) upon coordination to appropriate metal ions. Herein we present the synthesis and structural characterization of a novel Fe /Fe -seamed MONC, as well as studies related to its electr...

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Veröffentlicht in:Journal of the American Chemical Society 2018-11, Vol.140 (46), p.15611-15615
Hauptverfasser: Rathnayake, Asanka S, Fraser, Hector W L, Brechin, Euan K, Dalgarno, Scott J, Baumeister, Jakob E, White, Joshua, Rungthanaphatsophon, Pokpong, Walensky, Justin R, Kelley, Steven P, Barnes, Charles L, Atwood, Jerry L
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container_end_page 15615
container_issue 46
container_start_page 15611
container_title Journal of the American Chemical Society
container_volume 140
creator Rathnayake, Asanka S
Fraser, Hector W L
Brechin, Euan K
Dalgarno, Scott J
Baumeister, Jakob E
White, Joshua
Rungthanaphatsophon, Pokpong
Walensky, Justin R
Kelley, Steven P
Barnes, Charles L
Atwood, Jerry L
description Under suitable conditions, C-alkylpyrogallol[4]arenes (PgCs) arrange into spherical metal-organic nanocapsules (MONCs) upon coordination to appropriate metal ions. Herein we present the synthesis and structural characterization of a novel Fe /Fe -seamed MONC, as well as studies related to its electrochemical and magnetic behaviors. Unlike other MONCs that are assembled through 24 metal ions, this nanocapsule comprises 32 Fe ions, uncovering 8 additional coordination sites situated between the constituent PgC subunits. The Fe ions are likely formed by the reducing ability of DMF used in the synthesis, representing a novel synthetic route toward polynuclear mixed-valence MONCs.
doi_str_mv 10.1021/jacs.8b10186
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title Site-Specific Metal Chelation Facilitates the Unveiling of Hidden Coordination Sites in an Fe II /Fe III -Seamed Pyrogallol[4]arene Nanocapsule
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