scholarly journals Synthesis, Structural Characterization, and Catalytic Property of A Zn(II) Complex with 5-Bromosalicylaldehyde Ligand

2017 ◽  
Vol 12 (3) ◽  
pp. 364 ◽  
Author(s):  
Xi Shi Tai ◽  
Peng Fei Li ◽  
Xin Wang ◽  
Li Li Liu
Keyword(s):  
Catalytic Activity ◽  
Catalytic Property ◽  
Structural Characterization ◽  
Raw Materials ◽  
Coupling Reaction ◽  
Complex Materials ◽  
X Ray Diffraction ◽  
Complex Catalyst ◽  
Complex Features ◽  
A3 Coupling

The study on catalytic activity of complex materials has been one of the hot spots in coordination  chemistry. In order to extensively study the catalytic activity of complexes, a new six-coordination Zn(II) complex material, [ZnL2(H2O)2] (C1) (HL = 5-bromosalicylaldehyde), has been prepared with 5-bromosalicylaldehyde, NaOH, and Zn(CH3COO)2·2H2O as raw materials. The structure of C1 was determined by elemental analysis, IR spectra, and single crystal X-ray diffraction. The Zn(II) complex shows a moderate catalytic activity for A3 coupling reaction of benzaldehyde, piperidine, and phenylacetylene with the benzaldehyde conversion reached 54.6 %. Furthermore, the Zn(II) complex catalyst exhibited 54.8 %, 53.8 %, and 54.4 % conversions of benzaldehyde in the second, third, and fourth cycles, respectively.  In addition, the Zn(II) complex features a selectivity of 100 % to the     product of propargylamine for the A3 coupling reaction. Copyright © 2017 BCREC Group. All rights reservedReceived: 25th December 2016; Revised: 10th March 2017; Accepted: 10th March 2017; Available online: 273th October 2017; Published regularly: December 2017How to Cite: Tai, X.S., Li, P.F., Wang, X., Liu, L.L. (2017). Synthesis, Structural Characterization, and Catalytic Property of A Zn(II) Complex with 5-Bromosalicylaldehyde Ligand. Bulletin of Chemical Reaction Engineering & Catalysis, 12(3): 364-369 (doi:10.9767/bcrec.12.3.876.364-369) 

scholarly journals Synthesis, Structural Characterization and Catalytic Activity of A Cu(II) Coordination Polymer Constructed from 1,4-Phenylenediacetic Acid and 2,2’-Bipyridine

2017 ◽  
Vol 12 (1) ◽  
pp. 113 ◽  
Author(s):  
Wang Li-Hua ◽  
Liang Lei ◽  
Wang Xin
Keyword(s):  
Catalytic Activity ◽  
Coordination Polymer ◽  
Polymer Material ◽  
Structural Characterization ◽  
Maximum Yield ◽  
Coupling Reaction ◽  
X Ray Diffraction ◽  
Complex Catalyst ◽  
Distorted Octahedral ◽  
Good Catalytic Activity

<p>In order to study the catalytic activity of Cu(II) coordination polymer material, a novel 1D chained Cu(II) coordination polymer material, [CuL(bipy)(H<sub>2</sub>O)<sub>5</sub>]n (A1) (H<sub>2</sub>L = 1,4-phenylenediacetic acid, bipy = 2,2’-bipyridine), has been prepared by the reaction of 1,4-phenylenediacetic acid, 2,2’-bipyridine, Cu(CH<sub>3</sub>COO)<sub>2</sub>·H<sub>2</sub>O and NaOH. The composition of A1 was determined by elemental analysis, IR spectra and single crystal X-ray diffraction. The results of characterization show that each Cu(II) atom adopts six-coordination and forms a distorted octahedral configuration. The catalytic activity and reusability of A1 catalyst for A<sup>3</sup> coupling reaction of benzaldehyde, piperidine, and phenylacetylene have been investigated. And the results show that the Cu(II) complex catalyst has good catalytic activity with a maximum yield of 54.3% and stability. Copyright © 2017 BCREC GROUP. All rights reserved</p><p><em>Received: 21<sup>st</sup> October 2016; Revised: 17<sup>th</sup> November 2016; Accepted: 22<sup>nd</sup> November 2016</em></p><p><strong>How to Cite:</strong> Li-Hua, W., Lei, L., Xin, W. (2017). Synthesis, Structural Characterization and Catalytic Activity of A Cu(II) Coordination Polymer Constructed from 1,4-Phenylenediacetic Acid and 2,2’-Bipyridine. <em>Bulletin of Chemical Reaction Engineering &amp; Catalysis</em>, 12 (1): 113-118 (doi:10.9767/bcrec.12.1.735.113-118)</p><p><strong>Permalink/DOI:</strong> http://dx.doi.org/10.9767/bcrec.12.1.735.113-118</p><p> </p>

scholarly journals Preparation, Characterization, and Catalytic Property of a Cu(II) Complex with 2-Carboxybenzaldehyde-p-Toluenesulfonyl Hydrazone Ligand

2018 ◽  
Vol 13 (1) ◽  
pp. 7 ◽  
Author(s):  
Xi Shi Tai ◽  
Peng Fei Li ◽  
Li Li Liu
Keyword(s):  
Catalytic Property ◽  
Elemental Analysis ◽  
Coupling Reaction ◽  
Uv Spectra ◽  
Organic Complex ◽  
Hydrazone Ligand ◽  
Metal Organic ◽  
Group 2 ◽  
A3 Coupling ◽  
Reaction Cycles

Metal-organic complex hybrid materials constructed from carboxylate ligands and hydrazone ligands have exhibited potential application in many fields. In order to enrich the applications of the metai-organic complex materials, a new hydrazone ligand contains carboxylate group, 2-carboxybenzaldehyde-p-toluenesulfonyl hydrazone (L1), and its Cu(II) complex (C2), have been prepared. The structure of L1 was determined by elemental analysis, IR spectra and single crystal X-ray diffraction, and the composition of Cu(II) complex (C2) has also been determined by elemental analysis, IR and UV spectra. The catalytic activity for A3 coupling reaction of benzaldehyde, piperidine, and phenylacetylene has been investigated. The results show that Cu(II) complex displays a 100 % selectivity to the product of propargylamine during A3 coupling reaction and benzaldehyde conversions were 95.3, 94.2, and 93.4 % at 120 °C for 12 h in the first, second, and third reaction cycles, respectively.  Copyright © 2018 BCREC Group. All rights reservedReceived: 16th March 2017; Revised: 17th July 2017; Accepted: 18th July 2017; Available online: 22nd January 2018; Published regularly: 2nd April 2018How to Cite: Tai, X.S., Li, P.F., Liu, L.L. (2018). Preparation, Characterization, and Catalytic Property of a Cu(II) Complex with 2-Carboxybenzaldehyde-p-Toluenesulfonyl Hydrazone Ligand. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (1): 7-13 (doi:10.9767/bcrec.13.1.1012.7-13) 

scholarly journals Silver incorporated into g-C3N4/Alginate as an efficient and heterogeneous catalyst for promoting click and A3 and KA2 coupling reaction

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mansoureh Daraie ◽  
Majid M. Heravi ◽  
Pourya Mohammadi ◽  
Ali Daraie
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
Click Reaction ◽  
Aqueous Media ◽  
Coupling Reaction ◽  
X Ray Diffraction ◽  
External Magnet ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

AbstractFe3O4/g-C3N4/Alginate-Ag nanocomposite as a novel and effective nanocatalyst was successfully prepared. This nanocomposite was fully characterized using several techniques such as X‐ray diffraction (XRD), field emission scanning electron microscopy with energy dispersive spectroscopy (FESEM-EDS), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FTIR). In addition, the catalytic activity of this novel and characterized nanocatalyst was investigated in the regioselective synthesis of 1,4-disubstituted 1,2,3-triazoles via click reaction and A3 and KA2 coupling reaction in aqueous media. The prepared nanocatalyst was simply recovered by using an external magnet and reused for several times with a slight loss of catalytic activity.

scholarly journals CHEMICALLY MODIFIED CLAYS USED FOR ENVIRONMENTAL QUALITY

2017 ◽  
Vol 19 (4) ◽  
Author(s):  
NICOLETA PLATON ◽  
ANA-MARIA ROŞU ◽  
VASILICA ALISA ARUŞ ◽  
DENISA ILEANA NISTOR ◽  
ILIE SIMINICEANU
Keyword(s):  
Catalytic Activity ◽  
Environmental Quality ◽  
Raw Materials ◽  
Experimental Results ◽  
Wet Oxidation ◽  
Target Compound ◽  
X Ray Diffraction ◽  
X Ray ◽  
Modified Clays ◽  
Chemically Modified

<p>In this work, catalysts were synthesized based on chemically modified clays through pillaring process with Al (III) and Fe (III) using commercial bentonite and acid-treated montomorillonite like KSF montmorillonite and K10 montmorillonite from Aldrich, as raw materials. The raw materials and chemically modified clays were characterized by: BET (Brunauer-Emmet-Teller) method and XRD (X-ray diffraction). Afterwards these catalysts were tested during wet oxidation with peroxides using phenol as target compound. Experimental results show that chemically modified clays with Fe(III) presented a higher catalytic activity in Fenton like processes than Al-Fe clays.</p>

scholarly journals Synthesis, Crystal Structure, and Catalytic Activity of a Calcium(II) Complex with 4-Formylbenzene-1,3-disulfonate-isonicotinic Acid Hydrazone

2018 ◽  
Vol 13 (3) ◽  
pp. 429 ◽  
Author(s):  
Xi-Shi Tai ◽  
Peng-Fei Li ◽  
Li-Li Liu
Keyword(s):  
Crystal Structure ◽  
Catalytic Activity ◽  
Isonicotinic Acid ◽  
Synthesis Method ◽  
Acid Hydrazide ◽  
X Ray Diffraction ◽  
Complex Catalyst ◽  
One Pot ◽  
Complex Molecules ◽  
3D Network

A new calcium(II) complex was synthesized by one-pot synthesis method from disodium 4-formylbenzene-1,3-disulfonate, isonicotinic acid hydrazide and Ca(ClO4)2•2H2O. The structure of calcium(II) complex was determined by elemental analysis, IR and single crystal X-ray diffraction. The results show that the Ca(II) complex molecules form 3D network structure by the interactions of π-π stacking and hydrogen bonds. The Ca(II) complex catalyst could efficiently catalyse oxidation of benzylic alcohol with good conversion of benzyl alcohol (78 %) and excellent selectivity of benzaldehyde (98 %).Copyright © 2018 BCREC Group. All rights reserved.Received: 13rd December 2017; Revised: 23rd May 2018; Accepted: 23rd May 2018How to Cite: Tai, X.S., Li, P.F., Liu, L.L. (2018). Synthesis, Crystal Structure, and Catalytic Activity of a Calcium(II) Complex with 4-Formylbenzene-1,3-disulfonate-isonicotinic Acid Hydrazone. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (3): 429-435 (doi:10.9767/bcrec.13.3.1961.429-435)Permalink/DOI: https://doi.org/10.9767/bcrec.13.3.1961.429-435 

The Synthesis and Structural Characterization of Peralkylated Triguanide Superbases

2014 ◽  
Vol 67 (7) ◽  
pp. 1129 ◽  
Author(s):  
Vjekoslav Štrukil ◽  
Edislav Lekšić ◽  
Ernest Meštrović ◽  
Mirjana Eckert-Maksić
Keyword(s):  
Diffraction Analysis ◽  
Gas Phase ◽  
Structural Characterization ◽  
Positive Charge ◽  
Coupling Reaction ◽  
Chloride Salt ◽  
X Ray Diffraction ◽  
X Ray ◽  
First Time

Organic superbases derived from a peralkylated triguanide framework have been synthesized in a coupling reaction between monosubstituted guanidines and a Vilsmeier salt. Single crystal X-ray diffraction analysis of the chloride salt allowed the structural characterization of the benzyl derivative for the first time and revealed an effective delocalization of the positive charge despite significant distortion of the triguanide cation planarity. With the calculated gas phase basicity ranging from 262 to 265 kcal mol–1 and pKa values in acetonitrile between 28 and 30, these compounds have been evaluated as potential organocatalysts in the transesterification reaction of vegetable oil.

scholarly journals Synthesis, Crystal Structure of Mg(II) Complex Material and its Application as Catalysts for A3 Coupling Reaction

2015 ◽  
Vol 9 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Xi-Shi Tai ◽  
Li-Li Liu
Keyword(s):  
Crystal Structure ◽  
Coupling Reaction ◽  
Ethanol Solution ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Complex Molecules ◽  
X Ray ◽  
3D Network ◽  
A3 Coupling ◽  
Efficient Heterogeneous Catalyst

The ligand of 1, 2-phenylenedioxydiacetic acid (HL) has been employed to react with MgCl2·6H2O in water/ethanol solution (v:v = 1:1), to yield a novel Mg(II) complex [MgL(H2O]3·3.5H2O. The complex was characterized by infrared spectroscopy and single crystal X-ray diffraction structural analysis. The results show that the Mg(II) complex belongs to monoclinic, space group C2/c with a = 2.9160(6) nm, b = 0.67617(14) nm, c = 1.7319(4) nm, β = 109.06(3)°, V= 3.2275(11) nm, Z = 8, Dc= 1.562 µg·m-3, µ = 0.184 mm, F (000) = 1560, and final R1 = 0.0703, ωR2= 0.2256. The complex molecules form a 3D network structure through hydrogen bonds and π-π stack. The A3 coupling reaction of phenylacetylene, aldehyde and amine (piperidine) in the presence of Au@Mg(II) complex as an efficient heterogeneous catalyst has been studied.

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