Journal
CRYSTENGCOMM
Volume 14, Issue 24, Pages 8368-8373Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce25913c
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Funding
- Cyprus Research Promotion Foundation [DeltaIDeltaAKTOmegaP/DeltaISigmaEK/0308/22]
- Republic of Cyprus
- European Regional Development Fund
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A new flexible Cd2+ metal organic framework (MOF), denoted as UCY-3, which is the second example of a MOF with the ligand H3CIP [H3CIP = 5-(4-carboxybenzylideneamino)isophthalic acid], is reported. It shows a unique (3,3,6)-connected topology and is based on a neutral non-oxo triangular [Cd-3(COO)(6)] secondary building unit that appears for the first time in MOFs chemistry. UCY-3 displays significant structural flexibility, capability for exchange of the guest solvents by various organic molecules in a single-crystal-to-single-crystal fashion as well as breathing capacity allowing the incorporation of relatively large amount of benzene into its pores. Overall this work indicates that MOFs based on semi-rigid polytopic ligands may adopt unprecedented structural types and exhibit unexpectedly high absorption capacities for relatively bulky organic molecules, as a result of their flexibility and breathing capability.
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