Tuning Structural Topologies of Three Photoluminescent Metal–Organic Frameworks via Isomeric Biphenyldicarboxylates

Efficient photodegradation of dyes by a new 3D Cd(II) MOF with rare fsh topology

Metal–organic frameworks (MOFs) can be regarded as 3D coordination polymers that adopt ordered porous structures and possess abundant active sites, which make them promising photocatalysts for the degradation of organic...

Trinuclear Mn2+/Zn2+ based microporous coordination polymers as efficient catalysts for ipso-hydroxylation of boronic acids

Two microporous coordination polymers based on hourglass trinuclear building units, [Mn₃(bpdc)₃(bpy)]·2DMF and [Zn₃(bpdc)₃(bpy)]·2DMF·4H₂O (bpdc = 4,4'-biphenyl dicarboxylic acid, bpy = 4,4'-bipyridine), have been synthesized under solvothermal conditions employing DMF as the solvent. Each structure consists of two crystallographically distinct M²⁺ (M1 and M2) centers that are connected via carboxylate bridges from six bpdc ligands, generating a trinuclear metal cluster, [M₃(bpdc)₃(bpy)]. Cluster representation of the structure resulted in an interpenetrated net of rare hex topological type. Catalytic activities of the CPs have been assessed for the oxidative hydroxylation of phenylboronic acids (PBAs) using aqueous hydrogen peroxide (H₂O₂). Various substituted aryl/hetero-arylboronic acids RB(OH)₂ [R = phenyl, 2,4-difluorophenyl, 4-aminophenyl, 2-thiophene etc.] underwent ipso-hydroxylation smoothly at room temperature to generate the corresponding phenols in excellent yields. The main advantages of this protocol are the aqueous medium reaction, heterogeneous catalytic system, and short reaction time with excellent yield.

Supramolecular recognition of benzene homologues in a 2D coordination polymer through variable inter-layer π–π interaction

A 2D network 1 was synthesized. After immersing 1 in benzene homologues, the crystal structures of 2 and 3 were gotten, demonstrating that the introduction of benzene homologues has transformed the π–π packing mode, further altering the host framework and fluorescence performance.

Crystal structure of bis(tetraethylammonium) [1,1′-biphenyl]-2,2′-dicarboxylate trihydrate, C30H54N2O7

C30H54N2O7, orthorhombic, P21212 (no. 18), a = 11.6240(9) Å, b = 12.9628(11) Å, c = 10.5166(9) Å, V = 1584.6(2) Å3, Z = 2, R gt(F) = 0.038, wR ref(F 2) = 0.115, T = 296 K.

Syntheses, structures, luminescent and photocatalytic properties of various polymers based on a “V”-shaped dicarboxylic acid

Four novel luminescent coordination polymers were synthesized under solvothermal conditions, and compounds2–4can serve as a Fe³⁺/Cu²⁺fluorescent sensor through quenching the luminescence, respectively.

A four-fold interpenetrated metal-organic framework as a fluorescent sensor for volatile organic compounds

A four-fold interpenetrated three dimensional (3D) metal-organic framework, [Cd2(tppe)(bpdc)2(H2O)]·solvent (1), was synthesized with a tetraphenylethene (TPE)-based ligand, 1,1,2,2-tetrakis(4-(pyridin-4-yl)phenyl)ethene (TPPE). This complex exhibits intense blue luminescence and is sensitive to toxic volatile organic compounds (VOCs).

Crystal structure of triethylammonium 2′-carboxy-[1,1′-biphenyl]-2-carboxylate, C20H25NO4

C20H25NO4, triclinic, P1̅ (no. 2), a = 8.3727(6) Å, b = 9.7374(7) Å, c = 12.3559(8) Å, α = 80.826(4)°, β = 73.432(4)°, γ = 75.425(4)°, V = 930.28(11) Å3, Z = 2, R gt (F) = 0.0454, wR ref (F 2 ) = 0.1374, T = 296(2) K.

Syntheses, structural diversity and photocatalytic properties of various Co(ii) coordination polymers based on a “V”-shaped 1,3-di(4′-carboxyl-phenyl)benzene acid and different imidazole bridging ligands

Various polymeric structures of complexes 1–4.

Tuning different kinds of entangled metal–organic frameworks by modifying the spacer group of aliphatic dicarboxylate ligands and the reactant ratio

Presented here are a series of coordination polymers with different entangled motifs which were synthesized using different dicarboxylic acid ligands and reactant ratios.

Assembly of 1D, 2D and 3D lanthanum(iii) coordination polymers with perchlorinated benzenedicarboxylates: positional isomeric effect, structural transformation and ring-opening polymerisation of glycolide

Eight La(iii) coordination polymers were prepared from isomeric perchlorinated benzenedicarboxylate ligands, and their catalytic activities have been described.