The Organic Secondary Building Unit: Strong Intermolecular π Interactions Define Topology in MIT-25, a Mesoporous MOF with Proton-Replete Channels

Sarah S. Park, Christopher H. Hendon, Alistair J. Fielding, Aron Walsh, Michael O’Keeffe, Mircea Dincă

Research output: Contribution to journalArticle

26 Citations (Scopus)


The structure-directing role of the inorganic secondary building unit (SBU) is key for determining the topology of metal-organic frameworks (MOFs). Here we show that organic building units relying on strong π interactions that are energetically competitive with the formation of common inorganic SBUs can also play a role in defining the topology. We demonstrate the importance of the organic SBU in the formation of Mg2H6(H3O)(TTFTB)3 (MIT-25), a mesoporous MOF with the new ssp topology. A delocalized electronic hole is critical in the stabilization of the TTF triad organic SBUs and exemplifies a design principle for future MOF synthesis.

Original languageEnglish
Pages (from-to)3619-3622
Number of pages4
JournalJournal of the American Chemical Society
Issue number10
Publication statusPublished - 2017 Mar 15


All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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