Porous metal-organic cages based on rigid bicyclo[2.2.2]oct-7-ene type ligands: synthesis, structure, and gas uptake properties

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Abstract

Three new ligands containing a bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxydiimide unit have been used to assemble lantern-type metal-organic cages with the general formula [Cu4L4]. Functionalisation of the backbone of the ligands leads to distinct crystal packing motifs between the three cages, as observed with single-crystal X-ray diffraction. The three cages vary in their gas sorption behaviour, and the capacity of the materials for CO2 is found to depend on the activation conditions: softer activation conditions lead to superior uptake, and one of the cages displays the highest BET surface area found for lantern-type cages so far.
Original languageEnglish
Article numbere202300732
Number of pages9
JournalChemistry - A European Journal
Volume29
Issue number32
Early online date6 Apr 2023
DOIs
Publication statusPublished - 7 Jun 2023

Keywords

  • porous materials
  • coordination chemistry
  • cage molecules
  • inorganic chemistry

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