One-, Two-, and Three-Dimensional Lanthanide Complexes Constructed from Pyridine-2,6-dicarboxylic Acid and Oxalic Acid Ligands

Liu, Maosheng; Yu, Qing; Cai, Yixiao; Su, Cheng‐Yong; Lin, Xiaoming; Zhou, Xiaodong; Cai, Jiwen

doi:10.1021/cg800526y

Cited by 192 publications

(36 citation statements)

References 67 publications

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“…Many complexes, constructed from oxalic acid or pyridine-2,6-dicarboxylic acid ligands with potential as functional materials in magnetism, catalysis and photo-luminescence, have been synthesized [4][5][6][7]. Af ew complexes containing mixed oxalate and pyridine-2,6-dicarboxylate ligands have also been reported [8].Inthese complexes the oxalate ligands were introduced in form of oxalic acid. However,oxalicacidcan also be obtained by chemicalrearrangement of pyridine-carboxylic acid [9]o ro xidative coupling of methanol [10] under solvothermal (including hydrothermal) synthetic conditions.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of {(oxalato)-bis-[(pyridine-2,6-di-carboxylato)-diaqua)- indium(III)]}dihydrate: [In(C2O4)(C7H3N1O4)2(H2O)4]·2H2O, C16H18In2N2O18

Xiao

al.²

2012

Zeitschrift für Kristallographie - New Crystal Structures

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C 16 H 18 In 2 N 2 O 18, triclinic, P1 (no. 2), a =6 .7024(3)Å , b =7 .2135(4)Å, c =1 2.2077(6)Å, a =9 0.281(1)°, b=104.976(1)°, g =9 9.427(1)°, V =5 61.78(5)Å 3 , Z =1 , R gt (F) =0.0268, wR ref( F 2 ) =0.0836, T =298(2) K. Source of materialThetitle compound was synthesized by ahydrothermalmethod from amixture of In(NO 3 ) 3 (0.11g, 0.36 mmol), pyridine-2,6-dicarboxylic acid (0.089g, 0.53 mmol), 2,2'-dipyridylamine (0.33 mmol, 0.056g) and distilled water (18.0 mL) in a30mLTeflon-lined stainless steelreactor. The solution was heated at 423 Kfor five days and then cooled slowly to room temperature. Good quality colourless crystals of the title compound were collected for X-ray analysis. Experimental detailsThe all Ha toms were positioned geometrically anda llowed to ride on theirparentatoms at distances of Csp 2 -H =0.93Å with U iso =1.2U eq and O-H =0.85Å with U iso =1.5U eq . DiscussionIn the fields of coordination chemistry, carboxylic ligands like oxalic acid and pyridine-2,6-dicarboxylic acid have been extensively used, based on their diverse coordination modes and rich hydrogen bonding interactions [1][2][3]. Many complexes, constructed from oxalic acid or pyridine-2,

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Section: Discussionmentioning

confidence: 99%

Crystal structure of {(oxalato)-bis-[(pyridine-2,6-di-carboxylato)-diaqua)- indium(III)]}dihydrate: [In(C2O4)(C7H3N1O4)2(H2O)4]·2H2O, C16H18In2N2O18

Xiao

al.²

2012

Zeitschrift für Kristallographie - New Crystal Structures

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“…Pyridine-2,6-dicarboxylic acid (H 2 PDA) and its deprotonated anions (HPDA − and PDA 2− tuned under appropriate pH value) adopt flexible, multidentate coordination sites, and therefore may potentially provide various coordination modes which are in favor of the construction of higher-dimensional MOFs frameworks. [51][52][53][54][55][56][57][58][59][60][61] These organic fragments may adopt not only diverse coordination binding modes such as terminal monodentate, chelating to one metal center, bridging bidentate in syn-syn, syn-anti, or anti-anti conguration to metal centers, but also supramolecular contacts such as hydrogen bonding, π-π interactions, etc.…”

Section: Introductionmentioning

confidence: 99%

A Series of 3D Lanthanide Complexes Containing (La(III), Sm(III) and Gd(III)) Metal-organic Frameworks: Synthesis, Structure, Characterization and Their Luminescent Properties

Zhang¹,

Yang²,

Wu³

et al. 2012

Bulletin of the Korean Chemical Society

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Three kinds of 3D isomorphous and isostructural coordination polymers, namely, {[Ln 2 (PDA) 3 (H 2 O) 3 ]·0.25H 2 O} ∞ (Ln = La(1), Sm(2), and Gd(3)) (PDA 2− = pyridine-2,6-dicarboxylate anion) have been synthesized under hydrothermal conditions and characterized by elemental analyses, IR spectroscopy, thermal analyses and single crystal X-ray diffraction. In these MOFs, Ln(III) centers adopt eight-coordinated and nine-coordinated with the N 1 O 7 and N 2 O 7 donor sets to construct distorted trianglar dodecahedron geometry and tricapped trigonal prism configurations, respectively. Based on the building block of tetranuclear homometallic Ln 4 C 4 O 8 unit (16-membered ring), 1-3 are connected into highly ordered 2D sheets via O-C-O linkers and further constructed into 3D architectures through hydrogen bonds. Crystallographic parameters suggest that the lanthanide contraction effect exist in these coordination polymers. Luminescent properties of the lanthanide-based MOFs (metal-organic frameworks) have been measured at room temperature, which reveal that they presenting ionselective characters toward certain metals, such as Mg 2+, Cd 2+ and Pb 2+ ions.

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“…Lanthanides, with high and variable coordination numbers (6 B CN B 12) and flexible coordination environments, have led to a limited success in the design of molecular architectures with predetermined structures [25][26][27]. In the field of coordination polymers constructed by carboxylate ligands, much work is focused on lanthanide and transition metal coordination polymers constructed by multi-carboxylate ligands, such as benzene-1,2,4,5-tetracarboxylate, benzene-1,3,5-tricarboxylate, pyridine-2,3(5)-dicarboxylate, pyridine-2,6-dicarboxylate [28][29][30][31][32][33][34][35][36][37]. These multi-carboxylate ligands possess interesting features that are conducive to the formation of versatile coordination structures.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Properties Change of Lanthanide Coordination Polymers Dispersed in Mesoporous SBA-15 by Energy Transition Process

Wang

Fan

Liu

et al. 2011

J Inorg Organomet Polym

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Four lanthanide coordination polymers, {[Ln(HPDA)(PDA)(H 2 O) 2 ]Á4H 2 O} n (Ln = Sm (1), Eu (2), Tb (3)) and {[Sm 3 (H 2 PDA) 2 (HPDA) 2 (PDA) (OH) 5 (H 2 O) 3 ]Á 2dtaÁ4H 2 O} n (4) (H 2 PDA = pyridine-2,6-dicarboxylic acid, dta = diethyl amine), have been synthesized under hydrothermal conditions and were characterized by elemental analysis, IR spectrometer, and single-crystal X-ray crystallography. In the complexes 1-3, the 1D chains are assembled into 2D layer by hydrogen bonds formed between the carboxyl groups, and were further assembled into 3D framework by hydrogen bonds and p-p stacking interactions. In complex 4, each Sm 3? ion connected to the neighboring Sm 3? ion through bridging carboxyl oxygen atoms, and then give rise to a new 2D layered open-framework structure. The 3D supramolecular structure of 4 is constructed through hydrogen-bonding and p-p stacking interactions between adjacent metal-organic polymeric coordination chains. Complexes 1-3 were dispersed in mesoporous materials SBA-15 in DMF solution (denoted as ML-SBA-15, ML = 1, 2, 3), which were characterized by XRD, IR, and fluorescence spectra. Compared to the complexes 1-3, the photoluminescence efficiency of hybrid material was improved by the energy transition between mesoporous materials and the complexes. The complexes encapsulated in mesoporous materials SBA-15 exhibited stronger luminescence intensity and longer fluorescence lifetime.

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One-, Two-, and Three-Dimensional Lanthanide Complexes Constructed from Pyridine-2,6-dicarboxylic Acid and Oxalic Acid Ligands

Cited by 192 publications

References 67 publications

Crystal structure of {(oxalato)-bis-[(pyridine-2,6-di-carboxylato)-diaqua)- indium(III)]}dihydrate: [In(C2O4)(C7H3N1O4)2(H2O)4]·2H2O, C16H18In2N2O18

Crystal structure of {(oxalato)-bis-[(pyridine-2,6-di-carboxylato)-diaqua)- indium(III)]}dihydrate: [In(C2O4)(C7H3N1O4)2(H2O)4]·2H2O, C16H18In2N2O18

A Series of 3D Lanthanide Complexes Containing (La(III), Sm(III) and Gd(III)) Metal-organic Frameworks: Synthesis, Structure, Characterization and Their Luminescent Properties

Fluorescence Properties Change of Lanthanide Coordination Polymers Dispersed in Mesoporous SBA-15 by Energy Transition Process

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