A series of thermal stable lanthanide porphyrins with a condensed three-dimensional porous open framework: Gas adsorption and magnetic properties

2015 ◽  
Vol 19 (09) ◽  
pp. 1072-1079 ◽  
Author(s):  
Xiu-Guang Yi ◽  
Jian-Gen Huang ◽  
Rong-Hua Hu ◽  
Zhi-Gang Luo ◽  
Yun-Peng Pei ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Magnetic Measurements ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Open Framework ◽  
Paramagnetic Behavior ◽  
Adsorption Measurement ◽  
Ft Ir ◽  
Thermal Stable

A series of lanthanide porphyrins, [ LnIII(TPPSIV) ]n·n H 5 O 2 ( Ln = La , Sm , Eu ; H2TPPS = tetra(4-sulfonatophenyl)porphyrin), have been synthesized through solvothermal reactions and structurally characterized by single-crystal X-ray diffraction. These compounds are characterized by a condensed three-dimensional (3-D) porous open framework. Magnetic measurements reveal that these compounds show ferromagnetic, antiferromagnetic and paramagnetic behavior, respectively. All of the compounds exhibit highly thermal stability. The FT-IR and adsorption measurement of CO 2 were also studied.

scholarly journals An investigation of polyhedral deformation in two mixed-metal diarsenates: SrZnAs2O7and BaCuAs2O7

2015 ◽  
Vol 71 (4) ◽  
pp. 330-337 ◽  
Author(s):  
Sabina Kovač ◽  
Ljiljana Karanović ◽  
Tamara Đorđević
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
General Formula ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Open Framework ◽  
Geometrical Characteristics ◽  
Barium Copper

Two isostructural diarsenates, SrZnAs2O7(strontium zinc diarsenate), (I), and BaCuAs2O7[barium copper(II) diarsenate], (II), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction. The three-dimensional open-framework crystal structure consists of corner-sharingM2O5(M2 = Zn or Cu) square pyramids and diarsenate (As2O7) groups. Each As2O7group shares its five corners with five differentM2O5square pyramids. The resulting framework delimits two types of tunnels aligned parallel to the [010] and [100] directions where the large divalent nine-coordinatedM1 (M1 = Sr or Ba) cations are located. The geometrical characteristics of theM1O9,M2O5and As2O7groups of known isostructural diarsenates, adopting the general formulaM1IIM2IIAs2O7(M1II= Sr, Ba, Pb;M2II= Mg, Co, Cu, Zn) and crystallizing in the space groupP21/n, are presented and discussed.

Nitroxide radicals appended to phthalonitriles: synthesis, structural characterization and photophysical properties

2021 ◽  
Vol 77 (3) ◽  
pp. 137-143
Author(s):  
Ismail Fidan ◽  
Emel Onal ◽  
Catherine Hirel
Keyword(s):  
Magnetic Measurements ◽  
Photophysical Properties ◽  
Nucleophilic Aromatic Substitution ◽  
Structural Studies ◽  
Aromatic Substitution ◽  
Nitronyl Nitroxide ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Assisted ◽  
Ft Ir

The syntheses of 4-[4-(4,4,5,5-tetramethyl-2-imidazoline-3-oxide-1-oxyl-2-yl)phenoxy]phthalonitrile (3, C21H19N4O3) and 4-[4-(4,4,5,5-tetramethyl-2-imidazoline-1-oxyl-2-yl)phenoxy]phthalonitrile (4) were carried out by microwave-assisted nucleophilic aromatic substitution of 4-nitrophthalonitrile (2) by the pre-formed 2-(4-hydroxyphenyl)-4,4,5,5-tetramethyl-2-imidazoline-3-oxide-1-oxyl (1). Compounds 3 and 4 were characterized unambiguously by a rich array of analyses, such as melting point, FT–IR, MALDI–TOF MS, elemental analysis, UV–Vis, CV, EPR, magnetic measurements and single-crystal X-ray diffraction. Structural studies demonstrate that the C—H...X and C—X...π (X = O and N) interactions in the radical nitronyl nitroxide groups play an important role in the assembly of the crystal structures. Moreover, cyclic voltammetry analyses show that the phthalonitrile substituent retains the redox properties of the Ullman radicals.

Ferromagnetic interactions in a dicyanamide-bridged multinuclear metal-organic framework [Pr3NH]+ [Mn(dca)3]−·H2O

2019 ◽  
Vol 74 (6) ◽  
pp. 485-489
Author(s):  
Yuan Huang ◽  
Xiu-feng Yu ◽  
Zhen Rong ◽  
Yi-chun Ai ◽  
Kun Qian ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Magnetic Measurements ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Magnetic Susceptibility Data ◽  
X Ray ◽  
Susceptibility Data ◽  
Metal Organic ◽  
Ferromagnetic Interactions

AbstractA new complex [Pr3NH]+ [Mn(dca)3]− · H2O (dicyanamide = dca−) was synthesized, in which the Mn2+ cations are bridged by end-to-end dca anions to form three-dimensional [Mn(dca)3]nn− networks and tripropylammonium cations reside in the cavities of these networks. The complex has been characterized by single-crystal X-ray diffraction, infrared spectroscopy, elemental analysis, and magnetic measurements. Magnetic susceptibility data indicate ferromagnetic interactions among the MnII ions.

Preparation of CuS/SiO2 Composite Modified Aerogel and Its Superoleophobic and Photocatalytic Properties

NANO ◽  
2020 ◽  
Vol 15 (02) ◽  
pp. 2050017
Author(s):  
Ke-Cheng Yang ◽  
Li-Hui Xu ◽  
Hong Pan ◽  
Li-Ming Wang ◽  
Yong Shen ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Ambient Pressure ◽  
Sol Gel ◽  
Photocatalytic Properties ◽  
X Ray Diffraction ◽  
Sliding Angle ◽  
Nitrogen Gas ◽  
Ir Spectrometry ◽  
X Ray ◽  
Ft Ir

In this study, CuS/SiO2 composite modified aerogel was prepared by the incorporation of hollow spherical CuS into methyltrimethoxysilane-based SiO2 sol and modification with hexadecafluorodecyltriethoxysilane via acid-base catalyzed sol–gel reaction and drying under ambient pressure. The CuS/SiO2 composite modified aerogel was characterized by Fourier-transform infrared (FT-IR) spectrometry, scanning electron microscope (SEM), nitrogen gas adsorption and desorption and X-ray diffraction (XRD), respectively. The effects of CuS and fluorosilane concentration on density and porosity of aerogel, oleophobic and photocatalytic properties were evaluated. The results showed that structure and physical properties of aerogel had some effect by introducing CuS and fluorosilane, and the CuS/SiO2 composite modified aerogel with density of 0.146[Formula: see text]g/cm3 and specific surface area of 241[Formula: see text]m2/g achieved super-oleophobicity with oil contact angle of 152.8∘ and sliding angle of 10∘, and good photocatalytic properties for methylene blue.

A coordination polymer of mercury(II) formed by triazole-based and chloride linkers

2017 ◽  
Vol 72 (8) ◽  
pp. 573-577 ◽  
Author(s):  
Seyed Ghorban Hosseini ◽  
Keyvan Moeini ◽  
Mohammed S.M. Abdelbaky ◽  
Santiago García-Granda
Keyword(s):  
Coordination Polymer ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coordination Numbers ◽  
H Nmr ◽  
Square Planar ◽  
Polymeric Chains ◽  
Ft Ir ◽  
Hybrid Coordination

AbstractIn this work, a coordination polymer formed from 4,5-diamino-3-methyl-4H-1,2,4-triazol-1-ium chloride (DAMT·HCl) and HgCl2 formulated as [Hg5(μ-DAMT)2(μ-Cl)6(μ3-Cl)2Cl2]n has been prepared and characterized by elemental analysis, FT-IR, 1H NMR spectroscopy, and single-crystal X-ray diffraction. X-ray analysis of the complex revealed an organic-inorganic hybrid coordination polymer containing three different mercury atoms with coordination numbers of 4 (HgN(μ-Cl)2(μ3-Cl)), 5 (Hg(μ-Cl)3(μ3-Cl)Cl), and 6 (HgN2(μ-Cl)2(μ3-Cl)2) and seesaw, octahedral, and square pyramidal geometries, respectively. The polymeric chains are extended to a three-dimensional (3D) array by C–H···Cl and N–H···Cl interactions. In addition to these hydrogen bonds, there are Hg···Cl interactions with the mercury atoms with coordination numbers 4 and 5 to complete their pseudo-square planar and -octahedral geometries, respectively.

Two novel organic–inorganic hybrid materials from tetrachloridometallate(II) salts and 4-[(E)-2-(pyridin-1-ium-2-yl)ethenyl]pyridinium

2015 ◽  
Vol 71 (1) ◽  
pp. 48-52 ◽  
Author(s):  
José J. Campos-Gaxiola ◽  
Susana P. Arredondo Rea ◽  
Ramón Corral Higuera ◽  
Herbert Höpfl ◽  
Adriana Cruz Enríquez
Keyword(s):  
Three Dimensional ◽  
Stacking Interactions ◽  
X Ray Diffraction ◽  
Inorganic Hybrid ◽  
X Ray ◽  
Pyridinium Cation ◽  
Hydrogen Bonding Interactions ◽  
Dimensional Network ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Two organic–inorganic hybrid compounds have been prepared by the combination of the 4-[(E)-2-(pyridin-1-ium-2-yl)ethenyl]pyridinium cation with perhalometallate anions to give 4-[(E)-2-(pyridin-1-ium-2-yl)ethenyl]pyridinium tetrachloridocobaltate(II), (C12H12N2)[CoCl4], (I), and 4-[(E)-2-(pyridin-1-ium-2-yl)ethenyl]pyridinium tetrachloridozincate(II), (C12H12N2)[ZnCl4], (II). The compounds have been structurally characterized by single-crystal X-ray diffraction analysis, showing the formation of a three-dimensional network throughX—H...ClnM−(X= C, N+;n= 1, 2;M= CoII, ZnII) hydrogen-bonding interactions and π–π stacking interactions. The title compounds were also characterized by FT–IR spectroscopy and thermogravimetric analysis (TGA).

Darstellung und Charakterisierung von Berlinerblau-Analoga des Typs Ti[MB(CN)6] / Preparation and Characterization of Prussian Blue Analogs of the Type Ti[MB(CN)6]

1984 ◽  
Vol 39 (2) ◽  
pp. 185-188 ◽  
Author(s):  
Hidenari Inoue ◽  
Ekkehard Fluck
Keyword(s):  
Magnetic Measurements ◽  
Three Dimensional ◽  
Photoelectron Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cyanide Ligand ◽  
Cubic System ◽  
Prussian Blue Analogs ◽  
Back Donation

Three compounds of the type Ti[MB(CN)6] (MB = Co, Rh, and Ir) have been synthesized and characterized by means of their X-ray diffraction powder patterns, magnetic measurements, infrared, electronic, and X-ray photoelectron spectra. All compounds crystallize in the facecentered cubic system and form a three-dimensional framework of two octahedral coordination units MBC6 and TiN6. Upon the formation of Ti[MB(CN)6] from the corresponding potassium salt, the π back-donation in the [MB(CN)6]3- moiety is enhanced by the bridge formation through the cyanide ligand

A novel helical chainlike cobalt(II) coordination polymer containing 1D trigonal channels: Synthesis, crystal structure and properties

2011 ◽  
Vol 76 (12) ◽  
pp. 1955-1965
Author(s):  
Jin-Hua Cai ◽  
Fan Zhong ◽  
Wen-Tong Chen ◽  
Yi-Min Jiang
Keyword(s):  
Coordination Polymer ◽  
Magnetic Measurements ◽  
Three Dimensional ◽  
Helical Chain ◽  
Supramolecular Network ◽  
Structure And Properties ◽  
Cd Spectra ◽  
X Ray Diffraction ◽  
Guest Molecules ◽  
X Ray

A novel helical-chain coordination polymer [Co(tau)2(4,4′-bipy)]n·nH2O 1 (tau = taurine, 4,4′-bipy = 4,4′-bipyridine) has been hydrothermally synthesized and characterized by infrared spectroscopy, and thermogravimetric analysis, magnetic measurements, solid-state CD spectra and single crystal X-ray diffraction analysis. The intertwist trigonal-fold helical chains are further connected through hydrogen bonds to give a three-dimensional supramolecular network, in which trigonal microporous channels filled with water guest molecules exist within the polymer coils. Compound 1 shows weak antiferromagnetic interactions among metal ions.

A potential Cu/V-organophosphonate platform for tailored void spacesviaterpyridine mold casting

2017 ◽  
Vol 73 (2) ◽  
pp. 296-303 ◽  
Author(s):  
Aysun Bulut ◽  
Michael Wörle ◽  
Yunus Zorlu ◽  
Erdogan Kirpi ◽  
Huseyin Kurt ◽  
...  
Keyword(s):  
Magnetic Measurements ◽  
Three Dimensional ◽  
Free Ligand ◽  
Dimensional Structure ◽  
Void Space ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hirshfeld Surfaces ◽  
Mold Casting ◽  
Vanadium Salts

The reaction of appropriate copper and vanadium salts with tetratopic methane tetra-p-phenylphosphonic acid (MTPPA) in the presence of 2,2′:6′:2′′-terpyridine (terpy) yielded the three-dimensional bimetallic copper vanadium phosphonate framework [{Cu(terpy)}4Cu(VO2)4(MTPPA-H)2]·4H2O (1). Terpy has no net contribution to the three-dimensional structure providing a potential platform for void space formationviamold-casting. The structure was characterized by single-crystal X-ray diffraction and thermogravimetric analysis (TGA). Magnetic measurements were performed using a SQUID magnetometer. The crystal structure of the methanol solvate of the free ligand, MTPPA·MeOH, was analysed using Hirshfeld surfaces and fingerprint plots.

A samarium hybrid with porphyrin and amino acid as mixed ligands: Electrochemical and photophysical properties

2015 ◽  
Vol 19 (10) ◽  
pp. 1140-1146 ◽  
Author(s):  
Yun-Peng Pei ◽  
Jian-Gen Huang ◽  
Hua-Long Chen ◽  
Han-Mao Kuang ◽  
Jie Zhou ◽  
...  
Keyword(s):  
Amino Acid ◽  
Hydrothermal Reaction ◽  
Photophysical Properties ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mixed Ligands ◽  
Porphyrin Macrocycle ◽  
Ft Ir ◽  
Emission Quantum Yield

A samarium hybrid with porphyrin and amino acid as mixed ligands {[Sm(His)(H2O)][Sm(H3O)3](H2TPPS)2} • 5H2O (1) (His = histidine; H6TPPS = tetra(4-sulfonatophenyl)porphyrin) has been synthesized via a hydrothermal reaction and characterized by single-crystal X-ray diffraction. Compound 1is crystallized in the space group [Formula: see text] of the triclinic system. Compound 1is characteristic of a three-dimensional (3-D) open framework with the samarium ions in two types of coordinating environments and a saddle-distorted nonplanar porphyrin macrocycle. Compound 1 exhibits fluorescence in the red region. The fluorescence lifetime of 1 is 15.65 ns and the emission quantum yield is 4.1%. The CV/DPV, UV-vis and FT-IR are also reported in detail.

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