A series of d<sup>10</sup>metal coordination polymers based on a flexible bis(2-methylbenzimidazole) ligand and different carboxylates: synthesis, structures, photoluminescence and catalytic properties

Yu, Baoyi; Hecke, Kristof Van; Cui, Guang‐Hua

doi:10.1039/c4ce02090a

Cited by 180 publications

(54 citation statements)

References 81 publications

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“…The measured pXRD patterns of 2, 3 and 4 are very similar indicating that the complexes are isostructural. The differences in intensity may be due to the preferred orientation of the crystalline powder samples [44,45]. The experimental patterns agree satisfactorily with those calculated from the single-crystal X-ray diffraction data.…”

Section: Description Of Structuressupporting

confidence: 75%

Using the Singly Deprotonated Triethanolamine to Prepare Dinuclear Lanthanide(III) Complexes: Synthesis, Structural Characterization and Magnetic Studies

et al. 2017

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Abstract:The 1:1 reactions between hydrated lanthanide(III) nitrates and triethanolamine (teaH 3 ) in MeOH, in the absence of external bases, have provided access to the dinuclear complexes [Ln 2 (NO 3 ) 4 (teaH 2 ) 2 ] (Ln = Pr, 1; Ln = Gd, 2; Ln = Tb, 3; Ln = Dy, 4; Ln = Ho, 5) containing the singly deprotonated form of the ligand. Use of excess of the ligand in the same solvent gives mononuclear complexes containing the neutral ligand and the representative compound [Pr(NO 3 )(teaH 3 ) 2 ](NO 3 ) 2 (6) was characterized. The structures of the isomorphous complexes 1·2MeOH, 2·2MeOH and 4·2MeOH were solved by single-crystal X-ray crystallography; the other two dinuclear complexes are proposed to be isostructural with 1, 2 and 4 based on elemental analyses, IR spectra and powder XRD patterns. The IR spectra of 1-6 are discussed in terms of structural features of the complexes. The two Ln III atoms in centrosymmetric 1·2MeOH, 2·2MeOH and 4·2MeOH are doubly bridged by the deprotonated oxygen atoms of the two η 1 :η 1 :η 1 :η 2 :µ 2 teaH 2 − ligands. The teaH 2 − nitrogen atom and six terminal oxygen atoms (two from the neutral hydroxyl groups of teaH 2 − and four from two slightly anisobidentate chelating nitrato groups) complete 9-coordination at each 4f-metal center. The coordination geometries of the metal ions are spherical-relaxed capped cubic (1·2MeOH), Johnson tricapped trigonal prismatic (2·2MeOH) and spherical capped square antiprismatic (4·2MeOH). O-H···O H bonds create chains parallel to the a axis. The cation of 6 has crystallographic two fold symmetry and the rotation axis passes through the Pr III atom, the nitrogen atom of the coordinated nitrato group and the non-coordinated oxygen atom of the nitrato ligand. The metal ion is bound to the two η 1 :η 1 :η 1 :η 1 teaH 3 ligands and to one bidentate chelating nitrato group. The 10-coordinate Pr III atom has a sphenocoronal coordination geometry. Several H bonds are responsible for the formation of a 3D architecture in the crystal structure of 6. Complexes 1-6 are new members of a small family of homometallic Ln III complexes containing various forms of triethanolamine as ligands. Dc magnetic susceptibility studies in the 2-300 K range reveal the presence of a weak to moderate intramolecular antiferromagnetic exchange interaction (J = −0.30(2) cm −1 based on the spin HamiltonianĤ = −J(Ŝ Gd1 ·Ŝ Gd1 )) for 2 and probably weak antiferromagnetic exchange interactions within the molecules of 3-5. The antiferromagnetic Gd III ···Gd III interaction in 2 is discussed in terms of known magnetostructural correlations for complexes possessing the {Gd 2 (µ 2 -OR) 2 } 4+ core. Ac magnetic susceptibility measurements in zero dc field for 3-5 do not show frequency dependent out-of-phase signals; this experimental fact is discussed and rationalized for complex 4 in terms of the magnetic anisotropy axis for each Dy III center and the oblate electron density of the metal ion.

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Section: Description Of Structuressupporting

confidence: 75%

Using the Singly Deprotonated Triethanolamine to Prepare Dinuclear Lanthanide(III) Complexes: Synthesis, Structural Characterization and Magnetic Studies

et al. 2017

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“…Recent researches indeed demonstrated that some coordination compound materials are a new class of photocatalysts usable in photocatalytic degradation of organic pollutants under UV/visible/UV-Visible irradiation [17][18][19][20][21]. Based on the richness of metal-containing nodes and organic bridging linkers, as well as the controllability of synthesis, it is easy to construct coordination compound with tailorable capacity to absorb light, and thereby initiating desirable photocatalytic degradation of organic pollutants with them as photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Two Zinc Based Coordination Compounds Constructed from Two Azophenyl Ligands: Syntheses, Crystal Structure, and Photocatalytic Performance

Wang

Hou

et al. 2015

J Inorg Organomet Polym

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Two novel coordination compounds based on zinc ions, 1,10-phenanthroline (phen) and two similar azophenyl ligands, 3,4-dicarboxyl-(3 0 ,4 0 -dicarboxylazophenyl) benzene (3,4-H 4 dczpb), as well as 2,3-dicarboxyl-(2 0 ,3 0 -dicarboxylazophenyl)benzene (2,3-H 4 dczpb), namely [Zn(phen) (2,3-H 2 dczpb)(H 2 O)]ÁH 2 O (1), and [Zn 2 (phen) 4 (3,4-H 2 dczpb)](3,4-H 4 dczpb) 2 Á2H 2 O (2), have been synthesized under hydrothermal conditions, and characterized by single crystal X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), CHN elemental analysis, thermogravimetric analysis (TGA) and UV-Visible diffuse reflectance spectra (UV-Vis DRS). Compound 1 was built up of onedimensional [Zn(phen)(2,3-H 2 dczpb)(H 2 O)] chains, while compound 2 was composed of zero-dimensional discrete [Zn 2 (phen) 4 (3,4-H 2 dczpb)] unit and uncoordinated 3,4-H 4 dczpb. The UV-Vis DRS results revealed that the E g values of compounds 1 and 2 are 3.0 and 2.9 eV, respectively, implying that both 1 and 2 illustrate selective absorption in the ultraviolet region. The photocatalytic activities of degradation of methylene blue (MB) in compounds 1 and 2 under UV light irradiation were conducted, and the results revealed that both 1 and 2 can decompose MB efficiently. Finally, the TGA results exhibited 1 and 2 possess good thermal stability.

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“…The 2,6-naphthalenedicarboxylic acid(2,6-H 2 ndc) and 1,4-naphthalenedicarboxylic acid (1,4-H 2 ndc) are typical aromatic dicarboxylic acids, have attracted tremendous attention in constructing MOCPs with elegant architectures and desired properties, which can be attributed to its various coordinating modes, high symmetry and structural rigidity [14][15][16][17][18]. However, the studies on the effect of these aromatic dicarboxylates on the structures and properties of ternary mixed-ligand complexes based on the flexible bis(2-methybenzimidazole) ligands are still limited in literatures.…”

Section: Introductionmentioning

confidence: 99%

Syntheses, Structures and Catalytic Properties of Cobalt(II) and Silver(I) Coordination Polymers Based on Flexible Bis(2-methyl benzimidazole) and Dicarboxylic Acids

Zhang

Dong

Liu

et al. 2015

J Inorg Organomet Polym

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Two coordination polymers formulated as [Co 2 (2,6-ndc) 2 (L)] n (1) and [Ag(L)(1,4-Hndc)] n (2) (L = 1, 1 0 -(1,4-butanediyl)bis(2-methylbenzimidazole), 2,6-H 2 ndc = 2,6-naphthalenedicarboxylic acid, 1,4-H 2 ndc = 1,4-naphthalenedicarboxylic acid) were synthesized under hydrothermal conditions and characterized by IR, elemental analysis, and single-crystal X-ray diffraction. The structural analysis reveals that complex 1 exhibits an unprecedented 3D framework with threefold interpenetrating xah topology. Complex 2 shows a 1D ''X''-like chains bridged by L ligands, which is further extended via O-HÁÁÁO hydrogen bonding interactions into a 2D (4,4) supramolecular layer. The thermal stability and catalytic properties of two complexes for the degradation of Congo red dye in a Fenton-like process was also investigated.

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A series of d¹⁰metal coordination polymers based on a flexible bis(2-methylbenzimidazole) ligand and different carboxylates: synthesis, structures, photoluminescence and catalytic properties

Abstract: Six d10metal coordination polymers have been prepared and characterized. Complexes possess structural diversities with interesting topologies and high catalytic activities for the degradation of methyl orange.

Cited by 180 publications

References 81 publications

Using the Singly Deprotonated Triethanolamine to Prepare Dinuclear Lanthanide(III) Complexes: Synthesis, Structural Characterization and Magnetic Studies

Using the Singly Deprotonated Triethanolamine to Prepare Dinuclear Lanthanide(III) Complexes: Synthesis, Structural Characterization and Magnetic Studies

Two Zinc Based Coordination Compounds Constructed from Two Azophenyl Ligands: Syntheses, Crystal Structure, and Photocatalytic Performance

Syntheses, Structures and Catalytic Properties of Cobalt(II) and Silver(I) Coordination Polymers Based on Flexible Bis(2-methyl benzimidazole) and Dicarboxylic Acids

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A series of d10metal coordination polymers based on a flexible bis(2-methylbenzimidazole) ligand and different carboxylates: synthesis, structures, photoluminescence and catalytic properties

Abstract: Six d10metal coordination polymers have been prepared and characterized. Complexes possess structural diversities with interesting topologies and high catalytic activities for the degradation of methyl orange.

Cited by 180 publications

References 81 publications

Using the Singly Deprotonated Triethanolamine to Prepare Dinuclear Lanthanide(III) Complexes: Synthesis, Structural Characterization and Magnetic Studies

Using the Singly Deprotonated Triethanolamine to Prepare Dinuclear Lanthanide(III) Complexes: Synthesis, Structural Characterization and Magnetic Studies

Two Zinc Based Coordination Compounds Constructed from Two Azophenyl Ligands: Syntheses, Crystal Structure, and Photocatalytic Performance

Syntheses, Structures and Catalytic Properties of Cobalt(II) and Silver(I) Coordination Polymers Based on Flexible Bis(2-methyl benzimidazole) and Dicarboxylic Acids

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A series of d¹⁰metal coordination polymers based on a flexible bis(2-methylbenzimidazole) ligand and different carboxylates: synthesis, structures, photoluminescence and catalytic properties