Flexible and porous 2D layered structures based on mixed-linker metal-organic frameworks for gas sorption studies

Zn(II) metal-organic architectures from ether-bridged tetracarboxylate linkers: assembly, structural variety and catalytic features

Semi-flexible aromatic polycarboxylic acids are gaining impetus in crystal engineering of functional coordination polymers (CPs). This work opens up the use of two ether-bridged tetracarboxylic acids, 3-(2,5-dicarboxyphenoxy)phthalic acid (H4dpa) and...

Two metal-organic frameworks based on Sr2+ and 1,2,4,5-tetra-kis-(4-carb-oxy-phen-yl)benzene linkers

Two structurally different metal-organic frameworks based on Sr2+ ions and 1,2,4,5-tetra-kis-(4-carb-oxy-phen-yl)benzene linkers have been synthesized solvothermally in different solvent systems and studied with single-crystal X-ray diffraction technique. These are poly[[μ12-4,4',4'',4'''-(benzene-1,2,4,5-tetra-yl)tetra-benzoato](di-methyl-formamide)-distrontium(II)], [Sr2(C34H18O8)(C3H7NO)2] n , and poly[tetra-aqua-{μ2-4,4'-[4,5-bis-(4-carb-oxy-phen-yl)benzene-1,2-di-yl]dibenzoato}tris-trontium(II)], [Sr3(C34H20O8)2(H2O)4]. The differences are noted between the crystal structures and coordination modes of these two MOFs, which are responsible for their semiconductor properties, where structural control over the bandgap is desirable. Hydrogen bonding is present in only one of the compounds, suggesting it has a slightly higher structural stability.