Three 3D Metal-Organic Frameworks Constructed from Keggin Polyanions and Multi-nuclear AgI Clusters: Assembly, Structures and Properties

2013 ◽  
Vol 68 (7) ◽  
pp. 778-788 ◽  
Author(s):  
Xiu-Li Wang ◽  
Na Li ◽  
Ai-Xiang Tian ◽  
Jun Ying ◽  
Guo-Cheng Liu ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Structures And Properties ◽  
Elemental Analyses ◽  
Metal Organic ◽  
New Compounds ◽  
Inorganic Ligands

Three Keggin-based metal-organic frameworks (MOFs) containing multi-nuclear silver subunits, [Ag7(ptz)5(H2O)2][H2SiMo12O40] (1), [Ag8(ptz)5(H2O)2][AsW12O40] (2) and [Ag7(ptz)5(H2O)][HAsMo12O40] (3) (ptzH=5-(4-pyridyl)-tetrazole), have been synthesized under hydrothermal conditions by changing the inorganic polyanions. The new compounds have been characterized by elemental analyses, TG analyses, IR spectroscopy, and single-crystal X-ray diffraction. In compound 1, the multi-nuclear Ag5(ptz)5 subunits are interconnected to form chains, which are further linked by AgI cations to construct a 3D MOF with large channels. Pairs of SiMo12O404- polyanions reside in the channels as penta-dentate inorganic ligands. In 2, six AgI cations link five ptz- anions to construct a hexa-nuclear subunit [Ag6(ptz)5]+, which is interconnected to form chains. These chains are further linked by AgI cations to construct a 3D MOF, where AsW12O403- polyanions reside as hexa-dentate ligands. Compound 3exhibits a 3D MOF based on Ag5(ptz)5 subunits, in which the hexa-dentate AsMo12O403- polyanions are incorporated. The rigid tetrazole-based ligand ptz- plays an important role in the formation of the multi-nuclear subunits of the title compounds. The electrochemical properties of compound 1and the photocatalytic properties of compounds 1and 3have been investigated.

scholarly journals Coordination Polymers of Scandium(III) and Thiophenedicarboxylic Acid

2021 ◽  
Vol 47 (9) ◽  
pp. 593-600
Author(s):  
A. A. Lysova ◽  
V. A. Dubskikh ◽  
K. D. Abasheeva ◽  
A. A. Vasileva ◽  
D. G. Samsonenko ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Coordination Polymers ◽  
Elemental Analysis ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
Phase Purity ◽  
X Ray ◽  
Metal Organic

Abstract Three new metal−organic frameworks based on scandium(III) cations and 2,5-thiophenedicarboxylic acid (H2Tdc) are synthesized: [Sc(Tdc)(OH)]·1.2DMF (I), [Sc(Tdc)(OH)]·2/3DMF (II), and (Me2NH2)[Sc3(Tdc)4(OH)2]·DMF (III) (DMF is N,N-dimethylformamide). The structures of the compounds are determined by single-crystal X-ray structure analysis (CIF file CCDC nos. 2067819 (I), 2067820 (II), and 2067821 (III)). The chemical and phase purity of compound I is proved by elemental analysis, thermogravimetry, X-ray diffraction analysis, and IR spectroscopy.

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.

Three Mn(II) metal organic frameworks with the same chemical compositions, but different topological structures and properties

CrystEngComm ◽  
2021 ◽  
Author(s):  
Li Tian ◽  
Zhi Long Ma ◽  
Mengchen Wang ◽  
Jian Yun Shi
Keyword(s):  
Coordination Polymers ◽  
Terephthalic Acid ◽  
Metal Organic Frameworks ◽  
Solvothermal Reaction ◽  
Chemical Compositions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Multidentate Ligand ◽  
Structures And Properties ◽  
Metal Organic

Solvothermal reaction of a novel multidentate ligand 2,5-bis-(1,2,4-triazol-1-yl)-terephthalic acid (H2TTPA), with MnCl2 afforded three structurally different coordination polymers with the similar formula [Mn(TTPA)•H2O]n (Mn-(1-3)). Single-crystal X-ray diffraction analyses show that...

3D semiconducting Co–MOFs based on 5-(hydroxymethyl)isophthalic acid and imidazole derivatives: syntheses and crystal structures

2020 ◽  
Vol 76 (5) ◽  
pp. 398-404
Author(s):  
Zhong-Xuan Xu ◽  
Chun-Yan Ou ◽  
Chun-Xue Zhang
Keyword(s):  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Isophthalic Acid ◽  
Donor Ligands ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Structural Differences ◽  
Metal Organic

Two three-dimensional cobalt-based metal–organic frameworks with 5-(hydroxymethyl)isophthalic acid (H2HIPA), namely poly[[μ2-1,4-bis(2-methyl-1H-imidazol-1-yl)benzene-κ2 N 3:N 3′][μ2-5-(hydroxymethyl)isophthalato-κ2 O 1:O 3]cobalt(II)], [Co(C9H6O5)(C14H14N4)] n (1), and poly[tris[μ2-1,4-bis(1H-imidazol-1-yl)benzene-κ2 N 3:N 3′]bis[μ3-5-(hydroxymethyl)isophthalato-κ2 O 1:O 3:O 5]dicobalt(II)], [Co2(C9H6O5)2(C12H10N4)3] n (2), were synthesized under similar hydrothermal conditions. Single-crystal X-ray diffraction analyses revealed that 5-(hydroxymethyl)isophthalate (HIPA2−) and 1,4-bis(2-methyl-1H-imidazol-1-yl)benzene (1,4-BMIB) are simple linkers connecting cobalt centres to build a fourfold interpenetration dia framework in complex 1. However, complex 2 is a pillared-layer framework with a (3,6)-connected network constructed by 1,4-bis(1H-imidazol-1-yl)benzene (1,4-DIB) linkers, 3-connected HIPA2− ligands and 6-connected CoII centres. The above significant structural differences can be ascribed to the introduction of the different auxiliary N-donor ligands. Moreover, UV–Vis spectroscopy and Mott–Schottky measurements confirmed that complexes 1 and 2 are typical n-type semiconductors.

Two isostructural fluorinated metal-organic frameworks with rare rod-packing architecture: syntheses, structures and luminescent properties

2017 ◽  
Vol 72 (2) ◽  
pp. 107-113 ◽  
Author(s):  
Sheng-Chun Chen ◽  
Feng Tian ◽  
Ming-Yang He ◽  
Qun Chen
Keyword(s):  
Fluorescence Spectra ◽  
Metal Organic Frameworks ◽  
Luminescent Properties ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Secondary Building Units ◽  
Metal Organic ◽  
Solid State Fluorescence ◽  
Methyl Benzene

AbstractTwo isostructural fluorinated metal-organic frameworks, formulated as [M2(Fbix)(1,4-NDC)2]n (M=Cd for 1 and Mn for 2), were synthesized by employing 1,4-naphthalenedicarboxylic acid (1,4-H2NDC) and the flexible fluorinated ligand 2,3,5,6-tetrafluoro-1,4-bis(imidazole-1-yl-methyl)benzene (Fbix) under hydrothermal conditions. Their structures were determined by single-crystal X-ray diffraction and further characterized by infrared spectroscopy, powder X-ray diffraction, and thermogravimetric analyses. Structure analyses have revealed that compounds 1 and 2 show an unusual hex net based on infinite rod-shaped secondary building units. The solid-state fluorescence spectra of 1 and 2 were measured and indicate a ligand-based emission for both complexes.

A multifunctional colorimetric sensors originated from a cadmium naphthalene diimide-based metal-organic framework: photochromism, hydrochromism, and vapochromism

CrystEngComm ◽  
2021 ◽  
Author(s):  
Guoshuai Zhang ◽  
Chen Fu ◽  
Heyi Zhang ◽  
Hong Zhang
Keyword(s):  
Ir Spectroscopy ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
Naphthalene Diimide ◽  
Elemental Analyses ◽  
Cadmium Metal ◽  
Metal Organic ◽  
Solvothermal Conditions ◽  
Organic Framework

A new cadmium metal-organic framework [Cd(IsoNDI)(ClO4)·H2O]n (ZH-102, IsoNDI = N,N′-di(4-pyridylacylamino)-1,4,5,8-naphthalene diimide) has been synthesized under solvothermal conditions and characterized systematically by elemental analyses, IR spectroscopy, powder X-ray diffraction, and thermogravimetric...

Two new isomeric zinc(II) metal–organic frameworks based on 1,5-bis(2-methyl-1H-imidazol-1-yl)pentane and 5-methylisophthalate ligands

2017 ◽  
Vol 73 (2) ◽  
pp. 78-83
Author(s):  
Xiong-Wen Tan ◽  
Heng-Feng Li ◽  
Chang-Hong Li
Keyword(s):  
Self Assembly ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Central Metal Atom ◽  
Central Metal ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Mixed Ligands ◽  
Metal Organic

Many factors, such as temperature, solvent, the central metal atom and the type of coligands, may affect the nature of metal–organic frameworks (MOFs) and the framework formation in the self-assembly process, which results in the complexity of these compounds and the uncertainty of their structures. Two new isomeric ZnIImetal–organic frameworks (MOFs) based on mixed ligands, namely, poly[[μ-1,5-bis(2-methyl-1H-imidazol-1-yl)pentane-κ2N3:N3′](μ-5-methylisophthalato-κ2O1:O3)zinc(II)], [Zn(C9H6O4)(C13H20N4)]n, (I), and poly[[μ-1,5-bis(2-methyl-1H-imidazol-1-yl)pentane-κ2N3:N3′](μ3-5-methylisophthalato-κ3O1:O1′:O3)(μ3-5-methylisophthalato-κ4O1:O1′:O3,O3′)dizinc(II)], [Zn2(C9H6O4)2(C13H20N4)]n, (II), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and thermogravimetric analysis. Complex (I) displays a two-dimensional layer net, while complex (II) exhibits a twofold interpenetrating three-dimensional framework. Both complexes show high stability and good fluorescence in the solid state at room temperature.

A Heterometallic MOC Assembled from Cobalt-bisupported Keggin Subunits

2013 ◽  
Vol 68 (11) ◽  
pp. 1214-1218 ◽  
Author(s):  
Heng Liu ◽  
Ying Guo ◽  
Rui Ran ◽  
Huiyuan Ma ◽  
Haijun Pang ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Title Complex ◽  
X Ray Diffraction ◽  
Organic Complex ◽  
X Ray ◽  
Elemental Analyses ◽  
Metal Organic Complex ◽  
Metal Organic

A heterometallic metal-organic complex (MOC), K[Co(1,10-phen)2(H2O)]2[BW12O40]·2H2O (phen=1,10-phenanthroline) (1), has been synthesized hydrothermally and characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray diffraction. The complex exhibits cobaltbisupported tungstoborate units and potassium cations. The luminescence of the title complex has been investigated.

Urothermal Syntheses, Crystal Structures, and Luminescent Properties of Two New ZnII Compounds Constructed by the Mixed Ligands of 1,2,4-Triazole and 1,4-Naphthalenedicarboxylic Acid or 2,6-Naphthalenedicarboxylic Acid

2015 ◽  
Vol 68 (8) ◽  
pp. 1299 ◽  
Author(s):  
Haiyan Liu ◽  
Xufeng Meng ◽  
Lihui Zhang ◽  
Anqiang Jia
Keyword(s):  
Self Assembly ◽  
Metal Organic Frameworks ◽  
Luminescent Properties ◽  
The Self ◽  
X Ray Diffraction ◽  
Thermal Stabilities ◽  
X Ray ◽  
Mixed Ligands ◽  
Elemental Analyses ◽  
Metal Organic

Under urothermal conditions, the self-assembly of ZnII ions, 1,2,3-triazole, and two isomeric dicarboxylate ligands (1,4-H2ndc and 2,6-H2ndc) afforded two new metal–organic frameworks, namely [Zn(1,4-ndc)0.5(taz)]n·n(e-urea) (1) and [Zn(2,6-ndc)0.5(taz)]n·n(H2O)·n(e-urea) (2) (1,4-H2ndc = 1,4-naphthalenedicarboxylic acid; 2,6-H2ndc = 2,6-naphthalenedicarboxylic acid; Htaz = 1,2,4-triazole; e-urea = ethyleneurea), which were further determined by single-crystal X-ray diffraction analyses, elemental analyses, powder X-ray diffraction analyses, and IR spectra. Compound 1 features a 3D pillar-layered framework with 6-connected pcu topology (pcu = α-Po), and compound 2 also features a 3D pillar-layered framework with 6-connected pcu topology. In addition, the thermal stabilities and solid-state photoluminescent properties of compounds 1 and 2 were also studied.

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.

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