Cu1.5PMo12O40 ‐catalyzed condensation cyclization for the synthesis of substituted pyrazoles
Cu1.5PMo12O40 was found to be an effective, inexpensive and green catalyst for the preparation of pyrazole derivatives by the condensation –cyclization of hydrazines and 1,3‐diketones under mild conditions (room temperature to 60°C, 10–30 min). A convenient and direct approach has been developed for the preparation of pyrazole derivatives by the condensation cyclization of hydrazines/hydrazide and 1,3 ‐diketones in the presence of Cu1.5PMo12O40 (0.33 mol%) under mild conditions (r.t.‐60 °C, 10–30 min). Notably, the reaction was found to be scalable as 99% yield was obtained when the reaction was performed...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Guo ‐Ping Yang,
Xing He,
Bing Yu,
Chang‐Wen Hu Tags: FULL PAPER Source Type: research
Polymer complexes. LXXIII. Synthesis, characterization, thermal properties, electron spin resonance study and antimicrobial activity of Cu(II) polymer complexes: Relation between representative Pascal constants and thermal activation energy of decomposition
Copper(II) polymer complexes of 3 ‐allyl‐5‐(4‐nitrophenylazo)‐2‐thioxothiazolidine‐4‐one were synthesized. The copper ion is coordinated through the oxygen atom of carbonyl group and nitrogen atom of hydrazone group. From histograms of the representative Pascal constants and thermal activation energy of decomposition (Ea) employing the Coats –Redfern (a) and Horowitz–Metzger (b) methods, it is observed thatEa values of the polymer complexes decrease in the order2>1>3 (NO3−>Cl−>CH3COO−). A series of copper(II) polymer complexes (1–4) of 3 ‐allyl‐5‐(4‐nitrophenylazo)‐2‐thio...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: A.Z. El ‐Sonbati,
M.A. Diab,
Sh.M. Morgan,
M.A. El‐Mogazy Tags: FULL PAPER Source Type: research
Novel sheet ‐like bismuth subcarbonate‐zinc ferrite (Bi2O2CO3/ZnFe2O4) magnetically recyclable nanocomposites: Synthesis, characterization and enhanced catalytic performance for the reduction of nitrophenols and nitroanilines
Sheet –like Bi2O2CO3/ZnFe2O4 magnetic nanocomposites containing different amounts of magnetic ZnFe2O4 nanoparticles were successfully prepared by a simple hydrothermal route and applied as a novel magnetically recoverable catalyst for the reduction of nitrophenols and nitroanilines by using NaBH4 in aqueous solution and at room temperature. Under the optimized conditions, all of nitro compounds were reduced completely into their amino derivatives within 16 –30 min. Sheet –like Bi2O2CO3/ZnFe2O4 magnetic nanocomposites (denoted as BOC ‐ZFO) with different amounts of magnetic ZnFe2O4 (ZFO) nanoparticles were successfu...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Parisa Zarringhadam,
Saeed Farhadi Tags: FULL PAPER Source Type: research
The proton conductivities of two silver ‐thiophene‐2‐carboxylate coordination polymer and the relationship between the dimensionality and properity
Two lower dimensional new silver(I) compounds have been obtained by replacing bidentate 2,5 ‐tpa with mono‐dentate tpa ligand in the reaction systems. In high humidity conditions, the dimensionality of coordination polymer has close relationship with the proton conductivity. Two 1D tpa complexes [Ag(tpa)(2 ‐apy)]n (1) and {[Ag(3 ‐apy)]·(tpa)·(H2O)}n (2) have been obtained from higher dimensional silver complex reaction systems and characterized. The complexes of1 and2 exhibit superprotonic conductivities with 3.27 × 10−2 S·cm−1 and 2.25 × 10−2 S·cm−1 respectively, in the same order of magnitud...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Jun Du,
Xingyu Sun,
Yuanchun He,
Yang Yu,
Xiaofeng Zheng,
Laijin Tian,
Zhe Liu Tags: FULL PAPER Source Type: research
Biological evaluation of a novel amino acid ‐based macrocyclic Mn(III) and Fe(III) complexes
Metal complexes derived from curcumin based non ‐enolisable diketone and L‐Phenylalanine has been synthesized and the interaction of these metal complexes with CT‐DNA and BSA is studied using spectrocopic tools and computational docking studies. The complexes are found to bind with CT‐DNA via intercalation. The intrinsic flourescence of B SA is quenched by the complexes as a result of static quenching. It is found that the complexes act as a novel drug targets. A new tetradentate ligand 4 ‐benzylidine‐1,7‐bis(4‐hydroxy‐3‐methoxyphenyl)hepta‐1,6‐diene‐3,5‐bis(2‐imino‐3‐phenylpropanoic acid)...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: C. Joel,
R. Biju Bennie,
S. Daniel Abraham,
S. Iyyam Pillai,
S. Theodore David Tags: FULL PAPER Source Type: research
Crystal growth, structural and spectroscopic characterization, antimicrobial activity, DNA cleavage, molecular docking and density functional theory calculations of Zn(II) complex with 2 ‐pyridinecarboxylic acid
Growth of a crystal of a complex of Zn(II) and 2 ‐pyridinecarboxylic acid was conducted. The crystal structure was characterized, spectral properties determined and antimicrobial and DNA cleavage studies carried out experimentally. Molecular docking of the complex with DNA was performed theoretically. A Zn(II) complex with 2 ‐pyridinecarboxylic acid was prepared, and its crystal structure characterization was carried out using X‐ray diffraction analysis. The spectroscopic properties of the Zn(II) complex were determined by means of Fourier transform infrared, Raman and UV–visible spectroscopic techniques. The coor ...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Ömer Tamer,
Davut Avcı,
Emine Çelikoğlu,
Önder İdil,
Yusuf Atalay Tags: FULL PAPER Source Type: research
Synthesis and characterization of a new nanocomposite (FeW11V@CTAB ‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline
A new nanocomposite (FeW11V@CTAB ‐MMT) was designed as an efficient nanocatalyst for oxidative desulfurization (ODS) of gasoline. ODS was carried out, revealing that the removal efficiencies of thiophene, benzothiophene and dibenzothiophene were more than 97% in the presence of FeW11V@CTAB ‐MMT at 35 °C after 1 h. Kinetics of the catalytic ODS reactions was found to be pseudo‐first‐order. The catalyst was reusable for five runs without a discernible decrease in its activity. A new nanocomposite (FeW11V@CTAB ‐MMT) was designed on the basis of vanadium‐substituted tungstoferrate (FeW11V) and cetyltrimethylammo...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Mohammad Ali Rezvani,
Sahar Khandan Tags: FULL PAPER Source Type: research
Molybdenum anchored on NH2 ‐modified spherical SiO2: A highly efficient and stable catalyst for oxidative desulfurization of fuel oil
Mo ‐NH2‐SiO2 catalyst has been successfully synthesized via anchoring of Mo species onto the surface of NH2‐SiO2, the catalyst having highly dispersed Mo species and excellent hydrophobic character. Sulfur removal from fuel oil could reach as high as 80.4% at 60 °C in 60 min. A catalyst (Mo ‐NH2‐SiO2) has been synthesized via anchoring of Mo species onto the surface of 3 ‐aminopropyltriethoxysilane‐modified SiO2 (NH2‐SiO2) and applied in the catalytic oxidative desulfurization of fuel oil. Structure and properties of the catalyst were investigated using X ‐ray diffraction, transmission electron microscop...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Zhen Hu,
Shuxiang Lu,
Xiaoqiao Huang,
Jianxin Li,
Yongsheng Duan,
Lijun Yan,
Yue Yao,
Xiaoyuan Liao Tags: FULL PAPER Source Type: research
Stepwise post ‐modification immobilization of palladium Schiff‐base complex on to the OMS‐Cu (BDC) metal–organic framework for Mizoroki‐Heck cross‐coupling reaction
Modification of Cu (BDC) MOF toward the direct grafting of pyridyl salicylimine (2 ‐Py‐SI) and complexation of that with Pd ions was investigated. The synthesized PdII@Cu (BDC)/2 ‐Py‐SI MOF was then applied to Mizoroki‐Heck reaction. Palladium ions were successfully immobilized within the pores of open metal site (OMS) metal organic frameworks (MOFs) with Schiff ‐base (2‐Py‐SI) grafted in OMS‐Cu (BDC) using the hydrothermal method. This Schiff‐base complex on the Cu (BDC) greatly increased catalytic activity and acted as an efficient stabilizer of Pd ions. The hydrothermal method was a more efficient me...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Hassan Alamgholiloo,
Sadegh Rostamnia,
Asadollah Hassankhani,
Jabbar Khalafy,
Mehdi M. Baradarani,
Ghodrat Mahmoudi,
Xiao Liu Tags: FULL PAPER Source Type: research
Biosynthesis of silver nanoparticles using oak leaf extract and their application for electrochemical sensing of hydrogen peroxide
Biosynthesis of silver nanoparticles using oak leaf extract as a reductant/stabilizing agent, and their application for electrochemical sensing of hydrogen peroxide are described. A green method is proposed for synthesizing silver nanoparticles using oak leaf extract as a reductant, capper and stabilizing agent. The characterization of biosynthesized Ag@oak leaf extract (Ag@OLE) was performed using scanning electron microscopy –energy‐dispersive X‐ray analysis, X‐ray diffraction, transmission electron microscopy and UV–visible spectroscopy. The Ag@OLE nanocomposite was applied for immobilizing haemoglobin (Hb) on...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Saba Hemmati,
Mehdi Baghayeri,
Sanaz Kazemi,
Hojat Veisi Tags: FULL PAPER Source Type: research
A series of lanthanide complexes with 2 ‐fluoro‐N'‐(furan‐2‐ylmethylene) benzohydrazide ligand: Synthesis, characterization, luminescent properties and biological evaluation
Ligand 2 ‐fluoro‐N′‐(furan‐2‐ylmethylene) benzohydrazide (L) and nine of its lanthanide complexes, [LnL2(NO3)2]NO3, were synthesized and characterized. The antimicrobial activity and radical scavenging activity of all complexes were studied. Under excitation, luminescence emission properties for Tb and Eu complexes are observed. Lanthanide (III) complexes were synthesized with Schiff base ligand 2 ‐fluoro‐N′‐(furan‐2‐ylmethylene) benzohydrazide (L). These complexes were characterized using elemental analysis, molar conductivity measurements, spectral analysis, luminescence and thermogravimetric anal...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Abdulaziz M. Ajlouni,
Ziyad A. Taha,
Ahmed K. Hijazi,
Waleed M. Al ‐Momani Tags: FULL PAPER Source Type: research
Synthesis of copper nanoparticles supported on MoO3 using Sun spurge leaf extract and their catalytic activity
The multicomponent 1,3 ‐dipolar cycloaddition of terminal alkynes, sodium azide and various organic halides in the presence of green‐synthesized copper nanoparticles supported on MoO3 was studied. Copper nanoparticles supported on MoO3 (Cu NPs/MoO3) were prepared by a green method using Sun spurge leaf extract. Cu NPs/MoO3 nanoparticles were characterized by X ‐ray diffraction analysis, energy dispersive X‐ray analysis, scanning electron microscope and transmission electron microscope. The catalytic activity of this well‐defined material in three‐component CuAAC reactions was tested to produce 1,4‐disubstitut...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Mohsen Janmohammadi,
Mojtaba Amini,
Naser Sabaghnia,
Ali Akbari,
Sanjeev Gautam,
Keun Hwa Chae Tags: FULL PAPER Source Type: research
CNC pincer palladium complex supported on magnetic chitosan as highly efficient and recyclable nanocatalyst in C ─C coupling reactions
A stable magnetic chitosan ‐supported triazine‐bridged bisimidazolium pincer palladium complex was synthesized as a highly active catalyst for cross‐coupling reactions. A stable and durable magnetic chitosan ‐supported triazine‐bridged bisimidazolium pincer palladium catalyst (Fe3O4@ChC@CNC ‐PdII) was synthesized and characterized using various techniques. The Fe3O4@ChC@CNC ‐PdII complex displayed high activity in the production of substituted biaryls via the cross ‐coupling reactions of aryl halides with arylboronic acids. Also, this catalyst could be simply recovered from the reaction mixture and reused i...
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Fatemeh Rafiee,
S. Azam Hosseini Tags: FULL PAPER Source Type: research
Improvement on physical properties of polyethersulfone membranes modified by poly(1 ‐vinylpyrrolidone) grafted magnetic Fe3O4@SiO2 nanoparticles
Applied Organometallic Chemistry, EarlyView. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Elias Mosaffa,
Hossein Ghafuri,
Hamid Reza Esmaili Zand Source Type: research
Palladium nanoparticles immobilized on Schiff base ‐functionalized mesoporous silica as a highly efficient and magnetically recoverable nanocatalyst for Heck coupling reaction
Applied Organometallic Chemistry, EarlyView. (Source: Applied Organometallic Chemistry)
Source: Applied Organometallic Chemistry - October 23, 2018 Category: Chemistry Authors: Mohammad Mehdi Khodaei,
Mahsa Dehghan Source Type: research
