Zn(II) and Cd(II) complexes assembled from versatile 1,2,3,5-benzenetetracarboxylic acid and chelating N-donor auxiliary coligands

Xia, Changkun; Wu, Fan; Yang, Kai; Sun, Wei; Min, Yuanyuan; Wu, Yue; Lu, Xin

doi:10.1016/j.poly.2016.07.003

Cited by 16 publications

(5 citation statements)

References 26 publications

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“…Zn(II) is chelated with O5 and N1 of H 2 mel and N6 and N9 of Bipy and completing the coordination sphere with two water molecules (Figure S9). The bond lengths and angles for complex E are presented in Table S5 . The data indicate that the angles around Zn(II) vary from 76.62° to 176.34°, these values not being largely different from those of a regular octahedron.…”

Section: Resultsmentioning

confidence: 98%

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Sadeek

El‐Hamid

Mohamed

et al. 2019

Applied Organom Chemis

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The mixed‐ligand Mn(II), Fe(III), Ni(II), Cu(II), Zn(II) and Zr(IV) complexes of meloxicam (H2mel) and 2,2′‐bipyridine (Bipy) were prepared and characterized. For all complexes, the analytical and spectroscopic results revealed that H2mel acts in a monobasic bidentate manner through the oxygen of the amide and nitrogen of the thiazole groups, whereas Bipy coordinates through the two nitrogen atoms with slightly distorted octahedral geometry. Thermodynamic parameters (E, ΔS*, ΔH* and ΔG*) were calculated using Coats–Redfern and Horowitz–Metzger methods. The geometries of H2mel and the complexes were carefully studied using density functional theory to predict the properties of materials performed using the hybrid density functional method B3LYP. All studied complexes are soft with respect to H2mel where η varies from 0.096 for Zn(II) complex to 0.067 for Fe(III) complex and σ varies from 10.42 to 14.93 eV, while η and σ for H2mel are 0.14 and 7.14 eV, respectively. The antibacterial activities of the ligands and metal complexes were investigated and the data show that the complexes are active against some bacterial species compared with H2mel.

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Section: Resultsmentioning

confidence: 98%

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Sadeek

El‐Hamid

Mohamed

et al. 2019

Applied Organom Chemis

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“…Hence, the observed shi of the emission band was caused by the deprotonated effect of H 4 btec and should be assigned to coordination interactions of H 4 btec carboxylate groups with Cd(II) atoms. 56 The daylight photocatalytic efficacy of the synthesized MOFs was studied by adopting 2-CP as the model, as illustrated in Fig. 9a.…”

Section: Resultsmentioning

confidence: 99%

Ag⁺, Fe³⁺and Zn²⁺-intercalated cadmium(ii)-metal–organic frameworks for enhanced daylight photocatalysis

et al. 2017

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“…In order to enrich this interesting field, in this work, we used 1,2,3,5-benzenetetracarboxylic acid, a derivative of the well explored adjacent dense polycarboxylate ligand, and 1,2,3-benzenetricarboxylic acid as ligand to obtain three novel silver(I) complexes with Ag–Ag contacts. 1,2,3,5-Benzenetetracarboxylic acid (H 4 btec) has been proved to be an ideal ligand to form coordination compounds with unique structures and interesting properties. − Different from well reported 1,2,3-benzenetricarboxylic acid, the H 4 btec has a 5-carboxyl group, which could not only act as a hydrogen bonding donor and acceptor but also form covalent bonding with the Ag(I) metal ion. Herein, three different Ag(I) coordination polymers, namely, [Ag 2 (H 2 btec)(H 2 O)] ( 1 ), [Ag 3 (Hbtec)] ( 2 ), and [Ag 4 (btec)] ( 3 ), will be presented.…”

Section: Introductionmentioning

confidence: 99%

Syntheses, Crystal Structures, and Properties of Three Novel Silver–Organic Frameworks Assembled from 1,2,3,5-Benzenetetracarboxylic Acid Based on Argentophilic Interactions

Xia

Min

Yang

et al. 2018

Crystal Growth & Design

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Three novel silver(I) metal−organic coordination polymers constructed from 1,2,3,5-benzenetetracarboxylic acid with different deprotonation degrees, namely, [Ag 2 (H 2 btec)(H 2 O)] (1), [Ag 3 (Hbtec)] (2), and [Ag 4 (btec)](3) (H 4 btec = 1,2,3,5-benzenetetracarboxylic acid), have been synthesized with hydrothermal methods and characterized by elemental analysis, infrared, thermogravimetric analysis, and single crystal X-ray diffraction. The Ag(I) atoms show versatile coordination sphere in the three different complexes and great supramolecular structure difference demonstrated due to the coordination modes change of the H 4 btec ligands. Ag(I) dimers bridged by H 2 btec 2− ligands into a three-dimensional framework was observed in complex 1. An unprecedented talon-like Ag(I) hexamer unit was obtained in complex 2, which acts as a building unit that connects with Hbtec 3− into (5,10)-connected MoGe 2 -type framework. A one-dimensional Ag(I) chain built with Ag(I) tetramer units was demonstrated in complex 3, and each btec 4− ligand bridges six such chains into a three-dimensional framework. However, the weaker argentophilic interactions bridge the talon-like hexamers into a bead-like Ag(I) chain in complex 2, while such weak interactions bridge the zigzag Ag(I) chains into a two-dimensional Ag(I) sheet in complex 3. Photoluminescence, and antibacterial activities of complexes 1−3 were also examined.

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Zn(II) and Cd(II) complexes assembled from versatile 1,2,3,5-benzenetetracarboxylic acid and chelating N-donor auxiliary coligands

Cited by 16 publications

References 26 publications

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Ag⁺, Fe³⁺and Zn²⁺-intercalated cadmium(ii)-metal–organic frameworks for enhanced daylight photocatalysis

Syntheses, Crystal Structures, and Properties of Three Novel Silver–Organic Frameworks Assembled from 1,2,3,5-Benzenetetracarboxylic Acid Based on Argentophilic Interactions

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Zn(II) and Cd(II) complexes assembled from versatile 1,2,3,5-benzenetetracarboxylic acid and chelating N-donor auxiliary coligands

Cited by 16 publications

References 26 publications

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Spectroscopic characterization, thermogravimetry, density functional theory and biological studies of some mixed‐ligand complexes of meloxicam and 2,2′‐bipyridine with some transition metals

Ag+, Fe3+and Zn2+-intercalated cadmium(ii)-metal–organic frameworks for enhanced daylight photocatalysis

Syntheses, Crystal Structures, and Properties of Three Novel Silver–Organic Frameworks Assembled from 1,2,3,5-Benzenetetracarboxylic Acid Based on Argentophilic Interactions

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Ag⁺, Fe³⁺and Zn²⁺-intercalated cadmium(ii)-metal–organic frameworks for enhanced daylight photocatalysis