Four MOFs with 2,2′-dimethoxy-4,4′-biphenyldicarboxylic acid: syntheses, structures, topologies and properties

Luo, Rui; Xu, Heng; Gu, Hao-Xue; Wang, Xin; Xu, Yan; Shen, Xuan; Bao, Weiwei; Zhu, Dunru

doi:10.1039/c3ce41428k

Cited by 58 publications

(33 citation statements)

References 77 publications

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“…The ∆ν value is utilized to appointing the coordination mode of the carboxylate binding and it can be suggested as monodentate or bidentate mode . This ∆ν value of the complex confirms that they coordinated to copper(II) ion as a bidentate mode as proved by X‐ray structural analysis …”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and in vitro effect of the Cu(II) complex with niflumic acid and 3‐picoline on paraoxanase‐I

Dilek

Çağlar

Çardak

et al. 2019

Archiv der Pharmazie

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Niflumic acid is used to treat inflammatory rheumatoid diseases, pain, and fever. The present study reports the experimental, spectroscopic, thermal, structural analyses, and biological activities of this complex. The nonsteroidal anti-inflammatory drug niflumic acid, 3-picoline, and copper(II) chloride were utilized to synthesize a new complex: [Cu 2 Cl 2 (nif) 2 (3-pic) 4 ]. The crystal structure of [Cu 2 Cl 2 (nif) 2 (3-pic) 4 ] was determined by X-ray crystallography. The complex crystallizes in the triclinic space group P-1 and each Cu(II) center displayed six-coordinated distorted octahedral geometry. Two Cu(II) centers are connected by a chloro-bridge to form the binuclear metal core. Finally, the in vitro effects of the synthesized new complex and free niflumic acid were evaluated on the human serum paraoxonase 1 enzyme. At low doses, both the new complex and free niflumic acid showed very good inhibition activity with different inhibition mechanisms. In addition, the results showed that the new complex has more inhibition activity than free niflumic acid.

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Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and in vitro effect of the Cu(II) complex with niflumic acid and 3‐picoline on paraoxanase‐I

Dilek

Çağlar

Çardak

et al. 2019

Archiv der Pharmazie

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“…Although topological analyses of MOF networks have been greatly aided by searchable databases and computer programs (O'Keeffe et al, 2017;Ramsden et al, 2017), the design and construction of low-symmetry high-connected MOFs with a novel topology still remains a major challenge. Our current interest is to utilize the symmetrically substituted biphenyldicarboxylic acids (H 2 BPDC) as organic linkers for building highconnected MOFs and analyze the resulting network topology (Wang, Zhu et al, 2010;Gao et al, 2012;Luo et al, 2014). For example, an unprecedented (3,20)-connected binodal three-dimensional MOF has been constructed successfully from 2,2 0dimethoxy-BPDC as a linker and a nano-sized [Ln 4 @Ln 4 ] 'matryoshka' tetrahedron as a node (Zhao et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Topological identification of the first uninodal 8-connected lsz MOF built from 2,2′-difluorobiphenyl-4,4′-dicarboxylate pillars and cadmium(II)–triazolate layers

Zhang

et al. 2018

Acta Crystallogr C

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Using polynuclear metal clusters as nodes, many high-symmetry high-connectivity nets, like 8-connnected bcu and 12-connected fcu, have been attained in metal-organic frameworks (MOFs). However, construction of low-symmetry high-connected MOFs with a novel topology still remains a big challenge. For example, a uninodal 8-connected lsz network, observed in inorganic ZrSiO, has not been topologically identified in MOFs. Using 2,2'-difluorobiphenyl-4,4'-dicarboxylic acid (HL) as a new linker and 1,2,4-triazole (Htrz) as a coligand, a novel three-dimensional Cd-MOF, namely poly[tetrakis(μ-2,2'-difluorobiphenyl-4,4'-dicarboxylato-κO,O:O:O:O)tetrakis(N,N-dimethylformamide-κO)tetrakis(μ-1,2,4-triazolato-κN:N:N)hexacadmium(II)], [Cd(CHFO)(CHN)(CHNO)], (I), has been prepared. Single-crystal structure analysis indicates that six different Cd ions co-exist in (I) and each Cd ion displays a distorted [CdON] octahedral geometry with four equatorial O atoms and two axial N atoms. Three Cd ions are connected by four carboxylate groups and four trz ligands to form a linear trinuclear [Cd(COO)(trz)] cluster, as do the other three Cd ions. Two Cd clusters are linked by trz ligands in a μ-bridging mode to produce a two-dimensional Cd-triazolate layer with (6,3) topology in the ab plane. These two-dimensional layers are further pillared by the L ligands along the c axis to generate a complicated three-dimensional framework. Topologically, regarding the Cd cluster as an 8-connected node, the whole architecture of (I) is a uninodal 8-connected lsz framework with the Schläfli symbol (4·6). Complex (I) was further characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction, thermogravimetric analysis and a photoluminescence study. MOF (I) has a high thermal and water stability.

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“…The hydrothermal reactions of Cu(NO 3 ) 2 Á3H 2 O, H 4 L and 4,4 0 -bpy with a metal-ligand ratio of 2:1:2.5 at 160 C for 3 days produced MOF (1), while MOF (2) was obtained with a metal-ligand ratio of 2:1:2.2 in DMA/H 2 O at 90 C for 2 days. It is well known that the structures of MOFs are related to the metal-ligand ratio and can be modulated by choosing an appropriate temperature, reaction time and solvent system (Qin et al, 2019;Luo et al, 2014). Notably, the higher temperature is of great benefit in obtaining good-quality single crystals of (1), while the lower temperature is good for growing single crystals of (2).…”

Section: Syntheses Of Mofs (1) and (2)mentioning

confidence: 99%

“…Carboxylic acids as bridging ligands usually have two advantages: first, carboxylic acids have rich coordination modes with metal ions; secondly, depending on the degree of deprotonation, the carboxyl group itself can act as a hydrogen-bond acceptor and donor (Deacon & Phillips, 1980;Xu et al, 2016;. Based on these considerations, recently, a few novel 3D MOFs with a rare lsz topology (Zhang et al, 2018), a unique binodal 3,20-connected network (Zhao et al, 2016), an unprecedented 3D/3D heterointerpenetrating framework composed of a dia and a bcu topology (Xu et al, 2012;Luo et al, 2014), and an unusual infinite nano-sized ribbon (Zhang et al, 2011) have been successfully assembled from the symmetrically substituted biphenyldicarboxylic acids (H 2 BPDC). In contrast to the carboxylate-based MOFs, however, the sulfonate-based MOFs have been significantly less investigated; in particular, their final structures are often difficult to predict (Shimizu et al, 2009;Zhang et al, 2016;Xu et al, 2015;.…”

Section: Introductionmentioning

confidence: 99%

Two topologically different 3D Cu^II metal–organic frameworks assembled from the same ligands: control of reaction conditions

Zhang

Gao

Wang

et al. 2019

Acta Crystallogr Sect B

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Bifunctional ligands containing both carboxylic and sulfonate groups can adopt versatile coordination modes to produce novel metal–organic frameworks (MOFs) with high‐dimensional networks and interesting topologies. Using 2,2′‐disulfonylbiphenyl‐4,4′‐dicarboxylic acid (H4L) as a linker and 4,4′‐bipyridine (4,4′‐bpy) as a co‐ligand, two novel 3D CuII MOFs, {[Cu2(L)(4,4′‐bpy)2.5(H2O)]·1.7H2O}n, (1), and {[Cu2(L)(4,4′‐bpy)2]·DMA·3H2O}n, (2), have been synthesized and structurally characterized by X‐ray crystallography (DMA is N,N‐dimethylacetamide). MOF (1) shows an unprecedented trinodal 4,4,5‐connected topology network with the Schläfli symbol (4.62.73)(43.65.7.8)(6.73.8.10), while MOF (2) indicates a binodal 4,6‐connected fsc network with the Schläfli symbol (44.610.8)(44.62). MOFs (1) and (2) were further characterized by elemental analysis, IR spectroscopy, powder X‐ray diffraction and thermogravimetric analysis. MOF (1) shows a high water and chemical stability. The proton conductivity of (1) and CO2 adsorption of (2) were also investigated.

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Four MOFs with 2,2′-dimethoxy-4,4′-biphenyldicarboxylic acid: syntheses, structures, topologies and properties

Cited by 58 publications

References 77 publications

Synthesis, characterization, and in vitro effect of the Cu(II) complex with niflumic acid and 3‐picoline on paraoxanase‐I

Synthesis, characterization, and in vitro effect of the Cu(II) complex with niflumic acid and 3‐picoline on paraoxanase‐I

Topological identification of the first uninodal 8-connected lsz MOF built from 2,2′-difluorobiphenyl-4,4′-dicarboxylate pillars and cadmium(II)–triazolate layers

Two topologically different 3D Cu^II metal–organic frameworks assembled from the same ligands: control of reaction conditions

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Four MOFs with 2,2′-dimethoxy-4,4′-biphenyldicarboxylic acid: syntheses, structures, topologies and properties

Cited by 58 publications

References 77 publications

Synthesis, characterization, and in vitro effect of the Cu(II) complex with niflumic acid and 3‐picoline on paraoxanase‐I

Synthesis, characterization, and in vitro effect of the Cu(II) complex with niflumic acid and 3‐picoline on paraoxanase‐I

Topological identification of the first uninodal 8-connected lsz MOF built from 2,2′-difluorobiphenyl-4,4′-dicarboxylate pillars and cadmium(II)–triazolate layers

Two topologically different 3D CuII metal–organic frameworks assembled from the same ligands: control of reaction conditions

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Two topologically different 3D Cu^II metal–organic frameworks assembled from the same ligands: control of reaction conditions