Assembly of metal-organic frameworks from large organic and inorganic secondary building units: New examples and simplifying principles for complex structures

J. Kim, B. Chen, T. M. Reineke, H. Li, Mohamed Eddaoudi, D. B. Moler, M. O'Keeffe, O. M. Yaghi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

797 Scopus citations

Abstract

The secondary building unit (SBU) has been identified as a useful tool in the analysis of complex metal-organic frameworks (MOFs). We illustrate its applicability to rationalizing MOF crystal structures by analysis of nine new MOFs which have been characterized by single-crystal X-ray diffraction. Tetrahedral SBUs in Zn(ADC)2·(HTEA)2 (MOF-31), Cd(ATC) ·[Cd(H2O)6](H2O)5 (MOF-32), and Zn2(ATB)(H2O)·(H2O)3 (DMF)3 (MOF-33) are linked into diamond networks, while those of Ni2(ATC)(H2O)4· (H2O)4·(H2O)4 (MOF-34) have the structure of the Al network in SrAl2. Frameworks constructed from less symmetric tetrahedral SBUs have the Ga network of CaGa2O4 as illustrated by Zn2(ATC)·(C2H5OH)2 (H2O)2 (MOF-35) structure. Squares and tetrahedral SBUs in Zn2(MTB)(H2O)2·(DMF)6 (H2O)5 (MOF-36) are linked into the PtS network, which is the simplest structure type known for the assembly of these shapes. The octahedral SBUs found in Zn2(NDC)3·[(HTEA)(DEF)(ClBz)]2 (MOF-37) form the most common structure for linking octahedral shapes, namely, the boron network in CaB6. New structure types for linking triangular and trigonal prismatic SBUs are found in Zn3O(BTC)2·(HTEA)2 (MOF-38) and Zn3O(HBTB)2(H2O)·(DMF)0.5 (H2O)3 (MOF-39). The synthesis, crystal structure, and structure analysis using the SBU approach are presented for each MOF.

Original languageEnglish (US)
Pages (from-to)8239-8247
Number of pages9
JournalJournal of the American Chemical Society
Volume123
Issue number34
DOIs
StatePublished - Oct 11 2001

ASJC Scopus subject areas

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

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