Lanthanide(III) complex metal-organic frameworks with a phenanthroline-carboxylate derivate and 2,5-thiophenedicarboxylate coligand: hydrothermal synthesis, crystal structure, and high thermostability

2018 ◽  
Vol 73 (5) ◽  
pp. 311-317
Author(s):  
Zhao Xu ◽  
Fengqin An ◽  
Xiaohui Ma ◽  
Huiliang Zhou ◽  
Weiming Song ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Metal Organic Frameworks ◽  
Decomposition Temperature ◽  
Thermal Decomposition Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
3D Networks ◽  
Point Symbol

AbstractBased on 2-(4-carboxyphenyl)imidazo[4,5-f]-1,10-phenanthroline (HNCP) and 2,5-thiophenedicarboxylate (TDC2−) ligands, three new lanthanide-containing (Sm, Nd, and Pr) compounds, [Sm(NCP)(TDC)]n (1), [Nd(NCP)(TDC)]n·2n(H2O)0.5 (2), and [Pr(NCP)(TDC)]n·n(H2O)0.5 (3), have been synthesized using the hydrothermal method and structurally characterized using single-crystal X-ray diffraction. Structural analyses have revealed that compounds 1–3 are 3D isostructural metal-organic frameworks in which the [Ln2(COO)4] dimers can be regarded as 6-connecting nodes, and the TDC2− and NCP− ligands are simplified as connectors to achieve the double interspersed 3D networks with the point symbol {412·63}. Thermogravimetric analysis has illustrated that the rigid architecture contributes to superior thermal stability with a thermal decomposition temperature of more than 400°C for the resulting metal-organic frameworks.

Synthesis, crystal structure, luminescence, and photocatalytic properties of a 2D Cu(II) metal-organic frameworks based on 3,5-di(1H-benzimidazol-1-yl)pyridine and 4,4′-oxybis(benzoate) ligands

2020 ◽  
Vol 75 (8) ◽  
pp. 727-732
Author(s):  
Chen Zhang ◽  
Jian-Qing Tao
Keyword(s):  
Crystal Structure ◽  
Thermal Analysis ◽  
Uv Light ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Light Irradiation ◽  
Photocatalytic Activities ◽  
Metal Organic

AbstractA new Cu(II) metal-organic framework, [Cu(L)(OBA)·H2O]n (1) [H2OBA = 4,4′-oxybis(benzoic acid), L = 3,5-di(1H-benzimidazol-1-yl)pyridine] was hydrothermally synthesized and characterized through IR spectroscopy, elemental and thermal analysis and single-crystal X-ray diffraction. Complex 1 is a four-connected uni-nodal 2D net with a (44·62) topology which shows an emission centered at λ ∼393 nm upon excitation at λ = 245 nm. Moreover, complex 1 possesses high photocatalytic activities for the decomposition of Rhodamine B (RhB) under UV light irradiation.

scholarly journals Four Novel d10 Metal-Organic Frameworks Incorporating Amino-Functionalized Carboxylate Ligands: Synthesis, Structures, and Fluorescence Properties

2021 ◽  
Vol 9 ◽  
Author(s):  
Wang Xie ◽  
Jie Wu ◽  
Xiaochun Hang ◽  
Honghai Zhang ◽  
Kang shen ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Fluorescence Properties ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Quenching Effect ◽  
D10 Metal ◽  
Metal Organic ◽  
Point Symbol

By employment of amino-functionalized dicarboxylate ligands to react with d10 metal ions, four novel metal-organic frameworks (MOFs) were obtained with the formula of {[Cd(BCPAB)(μ2-H2O)]}n (1), {[Cd(BDAB)]∙2H2O∙DMF}n (2), {[Zn(BDAB)(BPD)0.5(H2O)]∙2H2O}n (3) and {[Zn(BDAB)(DBPB)0.5(H2O)]∙2H2O}n (4) (H2BCPAB = 2,5-bis(p-carbonylphenyl)-1-aminobenzene; H2BDAB = 1,2-diamino-3,6-bis(4-carboxyphenyl)benzene); BPD = (4,4′-bipyridine); DBPB = (E,E-2,5-dimethoxy-1,4-bis-[2-pyridin-vinyl]-benzene; DMF = N,N-dimethylformamide). Complex 1 is a three-dimensional (3D) framework bearing seh-3,5-Pbca nets with point symbol of {4.62}{4.67.82}. Complex 2 exhibits a 4,4-connected new topology that has never been reported before with point symbol of {42.84}. Complex 3 and 4 are quite similar in structure and both have 3D supramolecular frameworks formed by 6-fold and 8-fold interpenetrated 2D coordination layers. The structures of these complexes were characterized by single crystal X-ray diffraction (SC-XRD), thermal gravimetric analysis (TGA) and powder X-ray diffraction (PXRD) measurements. In addition, the fluorescence properties and the sensing capability of 2–4 were investigated as well and the results indicated that complex 2 could function as sensor for Cu2+ and complex 3 could detect Cu2+ and Ag+via quenching effect.

Hydrothermal synthesis, crystal structure and photoluminescence of two homochiral zinc(II) coordination polymers

2015 ◽  
Vol 71 (7) ◽  
pp. 618-622 ◽  
Author(s):  
Shao-Ming Ying ◽  
Jing-Jing Ru ◽  
Wu-Kui Luo
Keyword(s):  
Crystal Structure ◽  
Coordination Polymers ◽  
Layer Structure ◽  
Metal Organic Frameworks ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Strong Emission ◽  
X Ray ◽  
Elemental Analyses ◽  
Metal Organic

Metal–organic frameworks (MOFs) have potentially useful applications and an intriguing variety of architectures and topologies. Two homochiral coordination polymers have been synthesized by the hydrothermal method, namely poly[(μ-N-benzyl-L-phenylalaninato-κ4O,O′:O,N)(μ-formato-κ2O:O′)zinc(II)], [Zn(C16H16NO2)(HCOO)]n, (1), and poly[(μ-N-benzyl-L-leucinato-κ4O,O′:O,N)(μ-formato-κ2O:O′)zinc(II)], [Zn(C13H18NO2)(HCOO)]n, (2), and studied by single-crystal X-ray diffraction, elemental analyses, IR spectroscopy and fluorescence spectroscopy. Compounds (1) and (2) each have a two-dimensional layer structure, with the benzyl or isobutyl groups of the ligands directed towards the interlayer interface. Photoluminescence investigations show that both (1) and (2) display a strong emission in the blue region.

Synthesis, Crystal Structure and Luminescence Property on Cabazoly-Based Zinc Metal Organic Frameworks

2017 ◽  
Vol 727 ◽  
pp. 628-634
Author(s):  
Ying Jie Zhang ◽  
Li Xian Sun ◽  
Fen Xu
Keyword(s):  
Crystal Structure ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
X Ray ◽  
Zinc Metal ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
1D Chain ◽  
Metal Organic ◽  
Metal Charge Transfer

A novel zinc metal organic frameworks, named ZnL(2,2′-bpy), has been successfully synthesized, serving 3,6-dicarboxylic-9-ethylcarbazole acid (H2L) as ligand. This kind of ZnMOFs was characterized by FI-IR, elemental analysis, SEM, powder X-ray diffraction and single crystal X-ray diffraction to illustrate the structures. TG analysis was applied to investigate the thermostability. Structural analysis demonstrates that ZnMOFs possess triclinic crystal structure which is a 1D chain that occurs distorted-octahedral coordination geometry. Furthermore, the luminescent performance of ZnMOFs is performed and discussed in detail. The results show that ZnMOFs can emit blue luminescence originating, which is assigned to the ligand-to-metal charge transfer (LMCT).

Synthesis and Crystal Structure of a Novel Ho(III) Coordination Polymer with Oxalic Acid

2013 ◽  
Vol 873 ◽  
pp. 697-700 ◽  
Author(s):  
Tian Tian Li ◽  
Jun Xia
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Oxalic Acid ◽  
Metal Ion ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Metal Organic

A novel metal-organic frameworks (MOFs), {[Ho (ox)1.5(H2O)3] ·CH3OH·(C2N2H6)0.5}n, has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction, IR analyses, elemental analysis. The complex crystallizes in the monoclinic system with theP21/c space group. The metal ion is nine-coordinate and connected by oxalate to form 2D honeycomb-like structure.

Eight-fold Interpenetrating Diamond-like Metal-Organic Frameworks Constructed with an N- and O-Donor Ligand for Cadmium(II) and Manganese(II)

2012 ◽  
Vol 67 (12) ◽  
pp. 1248-1254 ◽  
Author(s):  
Xiao-Chun Cheng ◽  
Xiao-Hong Zhu ◽  
Hai-Wei Kuai
Keyword(s):  
Thermal Stability ◽  
Ir Spectroscopy ◽  
Metal Organic Frameworks ◽  
High Thermal Stability ◽  
X Ray Diffraction ◽  
Donor Ligand ◽  
Nlo Properties ◽  
X Ray ◽  
Hydrothermal Reactions ◽  
Metal Organic

Hydrothermal reactions of (E)-4-(2-(1H-imidazol-4-yl)vinyl)benzoic acid (HL) with Cd(II) and Mn(II) salts yield the complexes [Cd(L)2] (1) and [Mn(L)2] (2), which have been characterized by single-crystal and powder X-ray diffraction, IR spectroscopy, and elemental and thermogravimetric analyses. Complexes 1 and 2 are isomorphous and isostructural, displaying an uninodal 4-connected 8-fold interpenetrating 3D dia framework architecture with (66) topology. These frameworks exhibit high thermal stability up to 400 °C. The luminescence and non-linear optical (NLO) properties were investigated.

scholarly journals In situ X‐ray Diffraction Investigation of the Crystallisation of Perfluorinated Ce(IV)‐based Metal‐Organic Frameworks with UiO‐66 and MIL‐140 architectures

2021 ◽  
Author(s):  
Stephen J. I. Shearan ◽  
Jannick Jacobsen ◽  
Ferdinando Costantino ◽  
Roberto D’Amato ◽  
Dmitri Novikov ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic

A MOF based on a lead(II) 2-oxido-6-methylpyridine-4-carboxylate network

2020 ◽  
Vol 75 (4) ◽  
pp. 365-369
Author(s):  
Long Tang ◽  
Yu Pei Fu ◽  
Na Cui ◽  
Ji Jiang Wang ◽  
Xiang Yang Hou ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Carboxylic Acid ◽  
Thermogravimetric Analysis ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
Connected Node ◽  
Metal Organic ◽  
Solid State Fluorescence

AbstractA new metal-organic framework, [Pb(hmpcaH)2]n (1), has been hydrothermally synthesized from Pb(OAc)2 · 3H2O and 2-hydroxy-6-methylpyridine-4-carboxylic acid (hmpcaH2; 2), and characterized by IR spectroscopy, elemental and thermogravimetric analysis, and single-crystal X-ray diffraction. In complex 1, each hmpcaH− ligand represents a three-connected node to combine with the hexacoordinated Pb(II) ions, generating a 3D binodal (3,6)-connected ant network. The crystal structure of 2 was determined. The solid-state fluorescence properties of 1 and 2 were investigated.

Synthesis and Crystal Structure of the Flexible Ligand Coordination Polymer [Co3(bpd)5.5(NCS)6(NH3)]n⋅2H2O(bpd= 1,4-bis (4-pyridyl)-2,3-diaza-1,3-butadiene)

2013 ◽  
Vol 803 ◽  
pp. 80-84
Author(s):  
Yu Qi Liu ◽  
Yong Yang ◽  
Rui Yang ◽  
Xiao Jun Xu
Keyword(s):  
Crystal Structure ◽  
Infrared Spectroscopy ◽  
Coordination Polymer ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Elemental Analyses ◽  
Ligand Coordination ◽  
Point Symbol

A novel metalorganic coordination polymer, namely [Co3(bpd)5.5(NCS)6(NH3)]n2H2O (1) (bpd=1,4-bis (4-pyridyl)-2,3-diaza-1,3-butadiene), has been synthesized and characterized by elemental analyses, infrared spectroscopy, and single-crystal X-ray diffraction. Compound 1 presents 2D[3,4,-connected 3-nodal net with the point symbol (4268210)(4462)(8210). In addition, four identical 2D single nets is interlocked with each other in parallel, thus directly leading to the formation of a polycatenated layer (2D2D).

A series of microporous and robust Ln-MOFs showing luminescent properties and catalytic performances towards Knoevenagel reactions

2021 ◽  
Author(s):  
Qing-Xia Yao ◽  
Miaomiao Tian ◽  
Jun Zheng ◽  
Jintang Xue ◽  
Xuze Pan ◽  
...  
Keyword(s):  
Single Crystal ◽  
Metal Organic Frameworks ◽  
Luminescent Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Catalytic Performances

A series of microporous Ln(III)-based metal-organic frameworks (1-Ln) have been hydrothermally synthesized by using 4,4',4''-nitrilotribenzoic acid (H3NTB). Single crystal X-ray diffraction analyses show 1-Ln are isostructural and have 3D porous...

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