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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Doñagueda Suso, Beatriz and Legrand, Alexandre and Weetman, Catherine and Kennedy, Alan R. and Fletcher, Ashleigh J. and Furukawa, Shuhei and Craig, Gavin A. (2023) Porous metal-organic cages based on rigid bicyclo[2.2.2]oct-7-ene type ligands : synthesis, structure, and gas uptake properties. Chemistry - A European Journal, 29 (32). e202300732. ISSN 1521-3765 (https://doi.org/10.1002/chem.202300732)

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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.

ORCID iDs

Doñagueda Suso, Beatriz ORCID logoORCID: https://orcid.org/0000-0002-9626-3387, Legrand, Alexandre, Weetman, Catherine ORCID logoORCID: https://orcid.org/0000-0001-5643-9256, Kennedy, Alan R. ORCID logoORCID: https://orcid.org/0000-0003-3652-6015, Fletcher, Ashleigh J. ORCID logoORCID: https://orcid.org/0000-0003-3915-8887, Furukawa, Shuhei and Craig, Gavin A.;
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