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

Asanka S. Rathnayake, Hector W. L. Fraser, Euan K. Brechin, Scott J. Dalgarno, Jakob E. Baumeister, Joshua White, Pokpong Rungthanaphatsophon, Justin R. Walensky, Steven P. Kelley, Charles L. Barnes, Jerry L. Atwood

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3 Citations (Scopus)

Abstract

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 FeII/FeIII-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 FeII ions are likely formed by the reducing ability of DMF used in the synthesis, representing a novel synthetic route toward polynuclear mixed-valence MONCs.

Original languageEnglish
Pages (from-to)15611–15615
Number of pages5
JournalJournal of the American Chemical Society
Volume140
Issue number46
Early online date8 Nov 2018
DOIs
Publication statusPublished - 21 Nov 2018

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    Rathnayake, A. S., Fraser, H. W. L., Brechin, E. K., Dalgarno, S. J., Baumeister, J. E., White, J., Rungthanaphatsophon, P., Walensky, J. R., Kelley, S. P., Barnes, C. L., & Atwood, J. L. (2018). Site-Specific Metal Chelation Facilitates the Unveiling of Hidden Coordination Sites in an FeII/FeIII-Seamed Pyrogallol[4]arene Nanocapsule. Journal of the American Chemical Society, 140(46), 15611–15615. https://doi.org/10.1021/jacs.8b10186