Isostructural coordination polymers of the tethering naphthalene anchored bis(2-methylpyridinecarboxamide) ligand: single crystal, XPS, EDS and theoretical studies

Interesting correlation between various analytical techniques has been made in this work concerning new isostructural CPs.

A cobalt-based coordination polymer with a tripodal carboxylate ligand: synthese, structure and properties

A new cobalt-based coordination polymer (CP), [Co(Htatb)(1,4-bib)]·DMF (1), has been hydrothermally synthesized from CoCl2 ·6H2O, 4,4′,4′′-s-triazine-2,4,6-tribenzoic acid (H3tatb), and 1,4-bis(1-imidazoly)benzene (1,4-bib). The product has been characterized by IR spectroscopy, elemental and thermogravimetric analysis, and single-crystal X-ray diffraction. In compound 1, the Htatb ligand links three CoII ions resulting in a double-strand chain structure, further bridged through the 1,4-bib ligands to generate a 2D structure with channels. The fluorescence and cyclovoltammetry characteristics of compound 1 have also been investigated.

Three cobalt-based coordination polymers with tripodal carboxylate and imidazole-containing ligands: syntheses, structures, properties and DFT studies

The tripodal carboxylate ligand can be employed in Co(ii) salt/imidazole-containing ligand systems to generate 1D chain, 2D layer, and 2D to 3D network, and the fluorescence properties of 1–3 and magnetic behavior of 1 and 2 have been investigated.

Assembly of a series of coordination polymers built from rigid a tetracarboxylate ligand and flexible bis(imidazole) linker: syntheses, structural diversities, luminescence sensing, and photocatalytic properties

Hydrothermal reactions of aromatic terphenyl-4,2'',5'',4'-tetracarboxylic acid (H₄tta) and transitional metal cations in the presence of two flexible N-donor ancillary ligands afforded four novel coordination polymers, namely, {[Zn(tta)_0.5(m-bimb)]·H₂O}_n (1), [Ni₂(tta)(m-bimb)₂(H₂O)]_n (2), [Ni(H₂tta)(o-bimb)·H₂O]_n (3), and [Cd(tta)_0.5(o-bimb)]_n (4), from solvothermal reactions in the presence of bis(imidazole) bridging linkers (m-bimb = 1,3-bis(imidazol-1-ylmethyl)benzene, and o-bimb = 1,2-bis(imidazol-1-ylmethyl)benzene). Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses (EA), powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Compound 1 displayed a 2-fold 3D → 3D parallel entangled (4,4)-connected bbf net with the point symbol of (6⁴·8²)(6⁶)₂. Compound 2 featured a predocumented 3D (4,8)-connected (3²·5³·6)(3⁴·4⁴·5⁹·6¹¹) net. Compound 3 exhibited a 2D 4-connected sql sheet with the point symbol of (4⁴·6²), and compound 4 showed a 2D 4-connected (3²·6²·7²) kgm sheet. To our delight, fluorescence measurements showed that compound 1 could selectively and sensitively detect Cr³⁺ cations and nitrobenzene derivatives (nitrobenzene (NB), p-nitrotoluene (PNT), and p-nitroaniline (PNA)), which suggested that CPs of 1 was a promising bifunctional luminescence sensor material that could sense metal ions and small organic molecules. Moreover, 1 showed excellent photocatalytic activity.

Coordination polymer-based supercapacitors with matched energy levels: enhanced capacity under visible light illumination in the presence of methanol

A device with matched energy levels, FTO/CP 1/RuO₂ showed a much larger specific capacity than the individual components in the presence of visible light and methanol.

Synthesis of several novel coordination complexes: ion exchange, magnetic and photocatalytic studies

Eight different novel polymers by the reactions of H₂L and metal ions (Zn²⁺, Cu²⁺, Co²⁺) in the presence or absence of auxiliary ligands were constructed. The Zn²⁺ in complexes 1–3 could be partially exchanged with Cu²⁺ ions.

The effect of metal ions on photocatalytic performance based on an isostructural framework

The different central metal ions in CPs have a variety of electronic configurations, which can produce a great impact on the photocatalytic properties.

Controlled in situ reaction for the assembly of Cu(ii) mixed-ligand coordination polymers: synthesis, structure, mechanistic insights, magnetism and catalysis

Controlled in situ nucleophilic addition reaction results in two Cu(ii) mixed-ligand coordination polymers, and the one-step nucleophilic addition for in situ reaction is proposed.

Aminopyridine derivatives controlled the assembly and various properties of Cu–BTC metal–organic frameworks

Three Cu(ii) MOFs based on three aminopyridine derivatives and 1,3,5-benzenetricarboxylic acid have been synthesized and characterized. The electrocatalytic and photocatalytic properties of complexes 1–3 have been investigated in detail.

Novel tandem synthesis of bis(μ-NN′-tetrazolate) bridged dinuclear nickel(ii) Schiff base complex via [3 + 2] cyclo-addition at ambient condition

A bis(μ-NN′-tetrazolate) bridged dinuclear nickel(ii) Schiff base complex was synthesized via [3 + 2] cycloaddition reaction of 2-cyanopyrazine and sodium azide.

Solvothermal synthesis, crystal structure and photoluminescence properties of four Cd(ii) coordination polymers with different topological structures

Four coordination polymers assembled by tetrabromoterephthalic acid and various bis(imidazole) ligands: synthesis, topological structures and luminescence properties.

Coordination polymers built with transition metal sulphates and angular 2,5-bis(imidazol-1-yl)thiophene (thim2): synthesis, structure and photoluminescent properties

Six new CPs, based on thim₂ and metal sulphates have been synthesised. The photoluminescence properties of CPs 1 and 3 have been investigated.

Structural variability, topological analysis and photocatalytic properties of neoteric Cd(ii) coordination polymers based on semirigid bis(thiazolylbenzimidazole) and different types of carboxylic acid linkers

Six interesting architectures with different structural and topological motifs have been obtained. 3, 4 and 6 exhibit good photocatalytic activities for methylene blue degradation.

Four d10 metal coordination polymers based on bis(2-methyl imidazole) spacers: syntheses, interpenetrating structures and photoluminescence properties

Combining 2,5-thiophenedicarboxylate and bis(2-methyl imidazole) mixed ligands, four interpenetrating CPs with sql, dmp and dia networks have been constructed.