Oxidation State Distributions Provide Insight into Parameters Directing the Assembly of Metal-Organic Nanocapsules

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

Research output: Contribution to journalArticlepeer-review

Abstract

Two structurally analogous Mn-seamed C-alkylpyrogallol[4]arene (PgCn)-based metal-organic nanocapsules (MONCs) have been synthesized under similar reaction conditions and characterized by crystallographic, electrochemical, and magnetic susceptibility techniques. Both MONCs contain 24 Mn centers but, somewhat surprisingly, marked differences in oxidation state distribution are observed upon analysis. One MONC contains exclusively MnII ions, whilst the other is a mixed-valence MnII/ MnIII assembly. We propose that these disparate oxidation state distributions arise from slight differences in pH achieved during synthesis, a factor that may lead to many spectacular new MONCs (and associated host-guest chemistries).
Original languageEnglish
Pages (from-to)13022–13027
JournalJournal of the American Chemical Society
Volume140
Issue number40
Early online date14 Sep 2018
DOIs
Publication statusE-pub ahead of print - 14 Sep 2018

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