Exploring the Scope of Macrocyclic "Shoe-last" Templates in the Mechanochemical Synthesis of RHO Topology Zeolitic Imidazolate Frameworks (ZIFs).

Autor: Brekalo I; Department of Chemistry, Georgetown University, Washington, D.C. 20057, USA., Deliz DE; Department of Chemistry, Georgetown University, Washington, D.C. 20057, USA., Kane CM; Department of Chemistry, Georgetown University, Washington, D.C. 20057, USA., Friščić T; Department of Chemistry, McGill University, Montreal. QC, H3A 0B8, Canada., Holman KT; Department of Chemistry, Georgetown University, Washington, D.C. 20057, USA.
Jazyk: angličtina
Zdroj: Molecules (Basel, Switzerland) [Molecules] 2020 Feb 01; Vol. 25 (3). Date of Electronic Publication: 2020 Feb 01.
DOI: 10.3390/molecules25030633
Abstrakt: The macrocyclic cavitand MeMeCH 2 is used as a template for the mechanochemical synthesis of 0.2 MeMeCH 2 @RHO-Zn 16 ( Cl 2 Im ) 32 (0.2 MeMeCH 2 @ZIF-71) and RHO-Zn BIm 2 (ZIF-11) zeolitic imidazolate frameworks (ZIFs). It is shown that MeMeCH 2 significantly accelerates the mechanochemical synthesis, providing high porosity products (BET surface areas of 1140 m 2 /g and 869 m 2 /g, respectively). Templation of RHO-topology ZIF frameworks constructed of linkers larger than benzimidazole (HBIm) was unsuccessful. It is also shown that cavitands other than MeMeCH 2 -namely MeHCH 2 , Me i BuCH 2 , HPhCH 2 , MePhCH 2 , BrPhCH 2 , BrC5CH 2 -can serve as effective templates for the synthesis of x (cavitand)@RHO-ZnIm 2 products. The limitations on cavitand size and shape are explored in terms of their effectiveness as templates.
Competing Interests: The authors declare no conflict of interest.
Databáze: MEDLINE
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