scholarly journals Anthracene-induced formation of highly twisted metallacycle and its crystal structure and tunable assembly behaviors

2021 ◽  
Vol 118 (27) ◽  
pp. e2102602118
Author(s):  
Chongyi Chen ◽  
Yan Sun ◽  
Yue Zhao ◽  
Ryan T. VanderLinden ◽  
Wei Tuo ◽  
...  
Keyword(s):  
Self Assembly ◽  
Luminescent Materials ◽  
Ordered Structure ◽  
X Ray Diffraction ◽  
Promising Candidate ◽  
X Ray ◽  
Metal Organic Complex ◽  
Polycyclic Aromatic ◽  
Metal Organic ◽  
Selective Integration

Polycyclic aromatic hydrocarbons (PAHs) continue to attract increasing interest with respect to their applications as luminescent materials. The ordered structure of the metal−organic complex facilitates the selective integration of PAHs that can be tuned to function cooperatively. Here, a unique highly twisted anthracene-based organoplatinum metallacycle was prepared via coordination-driven self-assembly. Single-crystal X-ray diffraction analysis revealed that the metallacycle was twisted through the cooperation of strong π···π stacking interactions and steric hindrance between two anthracene-based ligands. Notably, the intramolecular twist and aggregation behavior introduced restrictions to the conformational change of anthracenes, which resulted in increased emission intensity of the metallacycle in solution. The emission behaviors and suprastructures based on the highly twisted metallacycle can be modulated by the introduction of different solvents. This study demonstrates that this metallacycle with highly twisted structure is a promising candidate for sensing and bioimaging applications.

Synthesis and Crystal Structure of a Cadmium(II) Complex with 2-(4΄-Chlorine-Benzoyl)-Benzoic Acid and 1,10-Phenanthroline

2011 ◽  
Vol 339 ◽  
pp. 313-316
Author(s):  
Xiu Mei Li ◽  
Zhi Tao Wang ◽  
Qing Wei Wang
Keyword(s):  
Benzoic Acid ◽  
Room Temperature ◽  
Supramolecular Network ◽  
X Ray Diffraction ◽  
Organic Complex ◽  
Orthorhombic Space Group ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Metal Organic Complex ◽  
Metal Organic

A new metal-organic complex Cd2(cbba)4(phen)2 (Hcbba = 2-(4΄-chlorine-benzoyl)- benzoic acid, phen = 1,10-phenanthroline) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, fluorescence spectrum and single-crystal X-ray diffraction. The compound crystallizes in orthorhombic, space group Pbcn with a = 12.0976(4), b = 18.0925(6), c = 31.6829(10) Å, V = 6934.6(4) Å3, C80H48Cd2Cl4N4O12, Mr = 1623.82, Dc = 1.555 g/cm3, μ(MoKα) = 0.8365 mm1, F(000) = 3264, Z = 4, the final R = 0.0396 and wR = 0.0960 for 5372 observed reflections (I > 2(I)). It exhibits a 3D supramolecular network through π-π interactions and shows green luminescent property at room temperature.

Double-Keggin-type Anion-templated Synthesis of a 3D Porous Coordination Polymer of Eu(III) Ions and dpdo Ligands

2008 ◽  
Vol 63 (3) ◽  
pp. 255-260 ◽  
Author(s):  
Mei Lin Wei ◽  
Rui Ping Sun ◽  
Kai Jiang
Keyword(s):  
Coordination Polymer ◽  
Self Assembly ◽  
Water Solution ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
Keggin Type ◽  
Keggin Anions ◽  
Metal Organic ◽  
Porous Coordination Polymer

A porous coordination polymer, {[Eu(dpdo)4(H2O)3]H(SiMo12O40)(dpdo)0.5(CH3CN)0.5(H2O)4}n (1), (where dpdo is 4,4′-bipyridine-N,N′-dioxide) templated by double-Keggin-type polyanions has been synthesized through the self-assembly of Eu(III) ions and dpdo in acetonitrile/water solution and structurally characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. The X-ray structure analysis reveals that compound 1 exhibits a 3D non-interwoven framework with large cavities housing centro-symmetrically related shoulder-by-shoulder double-Keggin anions as guests. The result of a thermogravimetric analysis suggests that the metal-organic framework has high thermal stability.

Synthesis and Crystal Structure of a Fe(II,III) Complex with 2-(4΄-Chlorine-benzoyl)-benzoic acid and 3-(2-Pyridyl)pyrazole

2013 ◽  
Vol 634-638 ◽  
pp. 2592-2595
Author(s):  
Qing Wei Wang ◽  
Ting Feng Lu ◽  
Jia Guo ◽  
Xiu Mei Li
Keyword(s):  
Crystal Structure ◽  
Benzoic Acid ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Organic Complex ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Elemental Analyses ◽  
Metal Organic Complex ◽  
Metal Organic

A new metal-organic complex FeII2FeIII2(cbba)4(L)6 (Hcbba = 2-(4΄-chlorine-benzoyl) benzoic acid, L = 3-(2-pyridyl)pyrazole) 1 has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, elemental analyses, TG and IR spectroscopy. The compound crystallizes in monoclinic, space group Cc with a = 17.729(5), b = 15.919(5), c = 33.650(5) Å, β = 92.058(5)°, V = 9491(4) Å3, C104H68Cl4Fe4N18O12, Mr = 2126.96, Dc = 1.489 g/cm3, μ(MoKα) = 0.786 mm1, F(000) = 4344, Z = 4, the final R = 0.0559 and wR = 0.1122 for 12093 observed reflections (I > 2(I)).

Synthesis, Structure and Properties of a Novel Metal-Organic Coordination Polymer, [Zn (NH3)2(BDC)]n

2013 ◽  
Vol 575-576 ◽  
pp. 30-36 ◽  
Author(s):  
Ning Ning Wu ◽  
Can Xiong Guo ◽  
Gui An Wu ◽  
Zhao Cai ◽  
Wan Hong He
Keyword(s):  
Coordination Polymer ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Self Assembly ◽  
Terephthalic Acid ◽  
Differential Scanning Calorimetric ◽  
X Ray Diffraction ◽  
X Ray ◽  
Acid Ligand ◽  
Metal Organic

A novel one-dimensional metal-organic coordination polymer, [Zn (NH3)2(BDC)]n (BDC=1,4-benzenedicaboxylate), has been synthesized by solvent evaporation method through self-assembly of Zn (II) salts with terephthalic acid ligand in ammonia aqueous solution. Single crystal X-ray diffraction analysis indicated that each Zn (II) was coordinated by two nitrogen donors from two NH3 and two oxygen counter donors from terephthalic acid ligand. The adjacent zigzag chains are arranged in a parallel fashion and linked by interchain hydrogen bonding interaction and π-π stacking interactions into higher-dimensional framework. The compound has also been characterized by CHN elemental analyses, Single crystal X-ray diffraction analysis, powder X-ray diffraction (PXRD) analysis, Fourier transform infrared (FT-IR) spectra, Thermalgravimetric-differential scanning calorimetric (TG-DSC) and Solid-state nuclear magnetic resonance (NMR), etc. Results showed that the framework of compound was stable at the temperature up to 246°C. The desolvated product [Zn (BDC)]n, which was obtained by removal of molecular NH3 from [Zn (NH3)2(BDC)]n, can be transferred to the different skeleton structures through coordinating different small hydrogen-bond-forming molecules.

scholarly journals Mixed Functionalization of Organic Ligands in UiO-66: A Tool to Design Metal–Organic Frameworks for Tailored Microextraction

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3656 ◽  
Author(s):  
Gabriel González-Rodríguez ◽  
Iván Taima-Mancera ◽  
Ana B. Lago ◽  
Juan H. Ayala ◽  
Jorge Pasán ◽  
...  
Keyword(s):  
High Performance ◽  
Solid Phase ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
Polar Groups ◽  
Polycyclic Aromatic ◽  
Metal Organic ◽  
Array Detection

The mixed-ligand strategy was selected as an approach to tailor a metal–organic framework (MOF) with microextraction purposes. The strategy led to the synthesis of up to twelve UiO-66-based MOFs with different amounts of functionalized terephthalate ligands (H-bdc), including nitro (-NO2) and amino (-NH2) groups (NO2-bdc and NH2-bdc, respectively). Increases of 25% in ligands were used in each case, and different pore environments were thus obtained in the resulting crystals. Characterization of MOFs includes powder X-ray diffraction, infrared spectroscopy, and elemental analysis. The obtained MOFs with different degrees and natures of functionalization were tested as sorbents in a dispersive miniaturized solid-phase extraction (D-µSPE) method in combination with high-performance liquid chromatography (HPLC) and diode array detection (DAD), to evaluate the influence of mixed functionalization of the MOF on the analytical performance of the entire microextraction method. Eight organic pollutants of different natures were studied, using a concentration level of 5 µg· L−1 to mimic contaminated waters. Target pollutants included carbamazepine, 4-cumylphenol, benzophenone-3, 4-tert-octylphenol, 4-octylphenol, chrysene, indeno(1,2,3-cd)pyrene, and triclosan, as representatives of drugs, phenols, polycyclic aromatic hydrocarbons, and disinfectants. Structurally, they differ in size and some of them present polar groups able to form H-bond interactions, either as donors (-NH2) or acceptors (-NO2), permitting us to evaluate possible interactions between MOF pore functionalities and analytes’ groups. As a result, extraction efficiencies can reach values of up to 60%, despite employing a microextraction approach, with four main trends of behavior being observed, depending on the analyte and the MOF.

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 three-dimensional twofold interpenetrated cobalt(II) MOF containing a flexible carboxylate-based ligand: synthesis, structure and magnetic properties

2018 ◽  
Vol 74 (4) ◽  
pp. 418-423 ◽  
Author(s):  
Yan-Yan An ◽  
Li-Ping Lu ◽  
Miao-Li Zhu
Keyword(s):  
Self Assembly ◽  
Three Dimensional ◽  
Antiferromagnetic Coupling ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Design And Synthesis ◽  
Metal Organic ◽  
Cluster Representation ◽  
Methyl Benzene

The design and synthesis of coordination polymers (CPs) have attracted much interest due to the intriguing diversity of their architectures and topologies. The functional solid catena-poly[μ2-aqua-triaqua{μ4-5-[4-carboxyphenoxy)methyl]benzene-1,3-dicarboxylato}{μ3-5-[4-carboxyphenoxy)methyl]benzene-1,3-dicarboxylato}dicobalt(II)], [Co2(C16H10O7)2(H2O)4] n or [Co2(HL)2(μ2-H2O)(H2O)3] n , was synthesized successfully by self-assembly of CoII ions with 5-[(4-carboxyphenoxy)methyl]isophthalic acid (H3 L). The title compound was obtained under hydrothermal conditions and exhibits a twofold interpenetrated three-dimensional skeleton with hms 3,5-conn topology according to the cluster representation for valence-bonded metal–organic frameworks (MOFs). It has been characterized by single-crystal X-ray diffraction, IR spectroscopy, powder X-ray diffraction (PXRD), thermogravimetric analysis and susceptibility measurements. The antiferromagnetic coupling between adjacent CoII centres occurs via superexchange through the ligands.

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.

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