Two- and Three-fold Interpenetrated Metal-Organic Frameworks from One-Pot Crystallization

One-pot crystallization of two 1,4-cyclohexanedicarboxylate-based tetranuclear Cu(ii) compounds and their DNA binding affinities

Two new tetranuclear Cu(ii) compounds have been synthesized using flexible linker 1,4-cyclohexanedicarboxylic acid in an one-pot crystallization which exhibit dissimilar affinities to DNA binding.

Supramolecular isomerism between cyclodimeric and sinusoidal 1D coordination polymers: competition of tunable argentophilic vs. electrostatic interactions

Anion exchanges of metallacyclodimeric nitrate to polyatomic anions crystallize in situ, resulting in a systematic supramolecular isomerism to 1D coordination polymers in mother liquor.

Fabrication of Cu(ii) based halobenzoate appended ladder polymers with efficient charge transport properties

Two novel 1D Cu(ii) CPs based on halo-substituted benzoate ligands together with an N-donor bpe spacer ligand exhibit high electrical conductivity and reveal Schottky diode behaviour.

Syntheses, crystal structures, dye degradation and luminescence sensing properties of four coordination polymers

Four coordination polymers based on the pyridyl-carboxyl ligand have been solvothermally synthesized and characterized. The heterogeneous catalytic oxidation activities of 1–3 and luminescence titration experiments for 4 have been studied.

Assembly of a series of zinc coordination polymers based on 5-functionalized isophthalic acids and dipyridyl

A series of zinc coordination polymers based on 5-functionalized isophthalate and flexible dipyridyl ligands have been prepared. Their thermal and luminescent properties in the solid state were also investigated.

A series of Cd(ii) coordination polymers based on flexible bis(triazole) and multicarboxylate ligands: topological diversity, entanglement and properties

Eight Cd(ii) coordination polymers with diverse topologies based on 1,4-bis(1,2,4-triazol-4-ylmethyl)benzene and multicarboxylate ligands were synthesized and characterized. The 3D topologies of 1, 2 and 3 are unprecedented.

Interpenetrated Double Pillared-Layer CoII MOFs with pcu Topology

Three double pillared-layer CoII metal–organic frameworks (MOFs) with a pcu topology of a long, conformationally flexible, dipyridyl spacer ligand, 1,4-bis[2-(4-pyridyl)ethenyl]benzene (bpeb), and aromatic dicarboxylates (1,4-benzenedicarboxylate (bdc), 2,6-naphthalenedicarboxylate (ndc), and biphenyl-4,4′-dicarboxylate (bpdc)) have been synthesised and structurally characterised by X-ray crystallography. The MOFs are denoted as [Co2(bpeb)2(bdc)2]·DMF·3H2O (1), [Co2(bpeb)2(ndc)2]·1.75DMF·3.75H2O (2), and [Co2(bpeb)2(bpdc)2]·3.5DMF·4H2O (3). In the dinuclear repeating unit, four carboxylates are bonded to two CoII atoms forming a (4,4) layer structure. The axial positions are occupied by bpeb ligands. Of these, 1 and 2 have 2-fold interpenetration, whereas 3 displays 3-fold interpenetration. The two bpeb space ligands in 1 have trans,trans,trans and trans,cis,trans conformations. In contrast, the bpeb ligands in 2 and 3 have a trans,cis,trans conformation. Although the olefin groups in two adjacent bpeb ligands, as the double pillars in 2 and 3, satisfy the conditions for photo-dimerisation to occur, they are photo-inactive. The conformational changes of bpeb, bonding modes of the dicarboxylates, and pore sizes in these double pillared-layer compounds have been discussed.

Three different metal-organic frameworks derived from a one-pot crystallization and their controllable synthesis

Three different Co-MOFs, [Co3(L)2(DPDP)]n (1), [Co(HL)(DPDP)]n (2) and {[Co(HL)(1/2DPDP)3(H2O)]·H2O}n (3) (H3L = 4,4',4''-(nitrilotris(methylene))tribenzoic acid, DPDP = 4,4'-(2,5-dibutoxy-1,4-phenylene)dipyridine) have been co-crystallized in a one-pot reaction. Based on the significant differences between the three structures, we adopt solvents to ultimately regulate acquisition of pure crystals of the three compounds.

Supramolecular silver(i) coordination isomers of different dimensionalities assembled using a conformationally flexible multidentate oligo-α-sulfanylpyrazinyl ligand

Three silver(i) supramolecular coordination isomers that display different dimensionalities and one homologue are derived from the conformationally flexible multidentate ligand 2,6-bis(pyrazin-2-ylthio)pyrazine (L).

Crystallographic determination of solid-state structural transformations in a dynamic metal–organic framework

A dynamic MOF with hierarchical pores displays various SC–SC structural transformations including reversible desolvation–resolvation, I₂ uptake–release, and photochemical [2+2] cycloaddition.

Construction of 2D interwoven and 3D interpenetrated metal–organic frameworks of Zn(ii) by varying N,N′-donor spacers

Four new MOFs of Zn(ii) with different degrees of interpenetration have been synthesized using trans,trans-muconic acid and different N,N′-donors.