Synthesis, Characterization and Catalytic Study of a Novel Binuclear Paddle-wheel Palladium(II) Complex in the Mizoroki-Heck Reaction
Vahid
Amani
Department of Chemistry, Farhangian University, Tehran, Iran
author
Akram Sadat
Delbari
Young Researchers and Elite Club, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
author
Ali
Akbari
Cellular and Molecular Research Center, Research Institute for Cellular and Molecular Medicine, Urmia University of Medical Sciences, Urmia, Iran
author
Mohammad Reza
Poor Heravi
Payame Noor University, Department of Chemistry, 19395-4697 Tehran, Iran
author
Mojtaba
Amini
Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran
author
text
article
2019
eng
A new binuclear paddle-wheel palladium(II) complex of [Pd2(μ-mtzt)4]dmgH2 (1) has been prepared by the treatment of PdCl2 in acetonitrile with mixture of 1-methyl-1H-1,2,3,4-tetrazole-5-thiol (Hmtzt) and dimethylglyoxime (dmgH2) in methanol. Resulted complex was characterized by elemental analysis (CHNS), IR, UV–Vis absorption, 1H NMR spectroscopy and its structure was determined with single-crystal X-ray diffraction. Single crystal analysis reveals that this complex has binuclear structure in a paddle-wheel fashion with Pd-Pd distances of 2.808(2)Å. Also, in this binuclear complex, each palladium(II) ion has a slightly distorted square-pyramidal coordination geometry with the two nitrogen and two sulfur atoms in equatorial positions from four bridges mtzt- ligands and the second palladium subunit in axial position. Catalytic potentiality of complex 1 is also exhibited in the Mizoroki–Heck coupling reactions between a range of aryl halides and olefins. The catalyst shows very much efficient reactivity in the Mizoroki–Heck reactions giving high yield of the coupling products.
Inorganic Chemistry Research
Iranian Chemical Society
2538-1865
3
v.
2
no.
2019
65
76
https://www.inorgchemres.org/article_93412_89397c5782b2ebcbd4e18d2573e71847.pdf
dx.doi.org/10.22036/icr.2019.200120.1053
Facile and Efficient Self-template Synthesis of Core-coronal-shell ZnO@ZIF-8 Nanohybrid Using Ascorbic Acid and its Application for Arsenic Removal
Mahboube
Ghahramaninezhad
Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran
author
Mahdi
Niknam Shahrak
Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran
author
text
article
2019
eng
In the present contribution, a facile and efficient protocol for synthesis a nanohybrid structure of core-coronal-shell ZnO@ZIF-8 using ascorbic acid (ZnO@AA/ZIF-8) as a new adsorbent for arsenic removal from water has been represented. For this purpose, the ZnO nanospheres were synthesized by a green and simple method followed by coating with ascorbic acid (AA) to modify their surface to achieve better growth of ZIF-8 on the surface of ZnO. After that, the core-coronal-shell ZnO@ZIF-8 nanohybrid obtained via in situ ZIF-8 formation using the dispersion of ZnO (as a core) in an ethanol solution only including 2-methylimidazole under moderate conditions. Here, ZnO is utilized as a template (core) as well as the metal node for ZIF-8 synthesis. The as-synthesized ZnO and ZnO@AA/ZIF-8 structures were characterized by different techniques such as XRD, FT-IR, TGA, and, SEM-EDS. The analyses data confirmed the benefit of the method for the preparation of this new nanohybrid. The nanostructured ZnO@AA/ZIF-8 exhibited high efficiency in the removal of arsenic from water. The obtained results confirmed that core-coronal-shell metal oxide@MOF nanohybrid could be introduced as efficient candidates for heavy metals removal for practical applications.
Inorganic Chemistry Research
Iranian Chemical Society
2538-1865
3
v.
2
no.
2019
77
85
https://www.inorgchemres.org/article_93739_bb1e60c313fdf96b89b9b6592a9aa19f.pdf
dx.doi.org/10.22036/icr.2019.191125.1051
Preparation and Investigation of Spinel-structured FeCo2O4 Nanoparticles as an Efficient Catalyst for Oxidation of Sulfides
Mojtaba
Amini
Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran
author
Samaneh
Aghamohamadi
Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran
author
Sanjeev
Gautam
Dr. S.S. Bhatnagar University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, 160-014, India
author
Keun
Chae
Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, South Korea
author
text
article
2019
eng
We report the preparation and characterization of spinel-structured FeCo2O4 nanoparticles for the efficient and selective oxidation of sulfides. The as-prepared FeCo2O4 nanoparticles were characterized by powder X-ray diffraction (PXRD), energy-dispersive X-ray analysis (EDX), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). According to TEM images, the size of the FeCo2O4 particles is identified to be 10– 20 nm. The obtained FeCo2O4 nanoparticles were used as an efficient catalyst for oxidation of sulfides. For all sulfide substrates, very good conversions (69-100%) and selectivities (89-99%) depending on the nature of the sulfide substrates were obtained. The reusability and recoverability of catalyst show that the catalytic system can be reused fourth times without significant loss of reactivity and stability.
Inorganic Chemistry Research
Iranian Chemical Society
2538-1865
3
v.
2
no.
2019
86
94
https://www.inorgchemres.org/article_95570_2f5afdbee1236dae32521a30aaeac455.pdf
dx.doi.org/10.22036/icr.2019.200750.1054
Interaction of Novel Ni2+, Cu2+ and VO2+ Complexes of a Tridentate Schiff Base Ligand with DNA, BSA and their Cytotoxic Activity
Morteza
Dostani
Department of Chemistry, Isfahan University of Technology, Isfahan, Iran, 84156-83111
author
Ali Hossein
Kianfar
Department of Chemistry, Isfahan University of Technology, Isfahan, Iran, 84156-83111
author
Hossein
Farrokhpour
Department of Chemistry, Isfahan University of Technology, Isfahan, Iran, 84156-83111
author
Fatemeh
Abyar
Department of Chemistry, Isfahan University of Technology, Isfahan, Iran, 84156-83111
author
Amir Abbas
Momtazi-Borojeni
Nanotechnology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
Department of Medical Biotechnology, Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
author
Elham
Abdollahi
Department of Medical Immunology, Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
author
text
article
2019
eng
In this research, the interaction of [CuL(DMF)], [NiL(DMF)] and [VOL(DMF)] (where L = ((E)-4-((2-amino-5-nitrophenylimino)methyl)benzene-1,3-diol)) complexes derived from tridentate Schiff base ligand with bovine serum albumin (BSA) and DNA was investigated via electronic absorption and fluorescence spectroscopy. The Ultraviolet-Visible (UV-Vis) spectra exhibited an isosbestic point for the complexes through titration with DNA. The experimental results showed the presence of intercalation interaction between the complexes and calf-thymus DNA (CT-DNA). The interaction of BSA protein and complexes was significant. The recorded florescence spectra of complexes interacting with DNA and BSA revealed the static quenching manner. The free binding energies of complexes and their interaction modes with DNA and BSA were determined by the molecular docking. MTT-dye reduction technique was applied to define cytotoxicity of [NiL(DMF)], [CuL(DMF)] and [VOL(DMF)] complexes against breast cancer 4T1 and colon carcinoma C26 cell lines. The [VOL(DMF)] complex had cytotoxic activity against 4T1 and C26 cell lines.
Inorganic Chemistry Research
Iranian Chemical Society
2538-1865
3
v.
2
no.
2019
95
107
https://www.inorgchemres.org/article_96810_b15551945f3ed1ad6a342bc33649a382.pdf
dx.doi.org/10.22036/icr.2019.187495.1050
Synthesis and Characterization of CoBaO2.70 Nanoparticle with Ferromagnetic Properties
Niloufar
Akbarzadeh-T
Department of Chemistry, University of Sistan and Baluchestan, P. O. Box: 98135-674, Zahedan, Iran
author
Sadegh
Ramezanian
Department of Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran
author
text
article
2019
eng
In this research we report synthesis of new Barium- Cobalt precursor complex with 2,6- pyridine dicarboxylic acid (dipic).Thecomplex[Ba(H2O)6][Co(dipic)2[(1)has been characterized using spectral methods (FT-IR, UV–Vis),elemental analysis and Cyclic voltammetric (CV) method. Also in this study we report thermal decomposition of inorganic precursor complex of (1).Characterization of the binary oxide nanoparticlewas carried out usingFourier Transform infrared (FT-IR) spectroscopy, X-ray powder diffraction (XRD), Scanning electron microscopy (SEM),Vibrating sample maghetometer (VSM)and energy dispersive X-ray analysis (EDX). The X-ray diffraction pattern at room temperature revealed that, highly pure and crystallized BaCoO2.70in orthorhombicstructure with a=4.2300 Å, b=4.3500 Å and c=11.3200 Å.
Inorganic Chemistry Research
Iranian Chemical Society
2538-1865
3
v.
2
no.
2019
108
116
https://www.inorgchemres.org/article_99776_6ba3954c19c622d5d28a45ec9207d548.pdf
dx.doi.org/10.22036/icr.2019.207967.1055
Platinum-oxygen Bond Formation: Kinetic and Mechanistic Studies
Elahe
Hadadi
Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences,
Shiraz University, Shiraz, 71467-13565, Iran
author
S. Masoud
Nabavizadeh
Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences,
Shiraz University, Shiraz, 71467-13565, Iran
author
Fatemeh
Niroomand Hosseini
Department of Chemistry, Shiraz Branch, Islamic Azad University, Shiraz 71993-37635, Iran
author
text
article
2019
eng
Reaction of [PtMe(C^N)(SMe2)] (C^N = 2-phenylpyridinate (ppy); 1a, C^N = benzo[h]quinolate, (bhq); 1b) with hydrogen peroxide gives the platinum(IV) complexes trans-[PtMe(OH)2(C^N)(H2O)] (C^N = ppy; 3a, C^N = bhq, 3b) bearing platinum-oxygen bonds. The Pt(II) complexes 1a and 1b have 5dπ(Pt)→π*(C^N) MLCT band in the visible region which is used to easily follow the kinetic of its reaction with H2O2. The kinetics and mechanism of Pt−O bond formation have been experimentally and theoretically investigated, showing the simple second-order kinetics; rate = k2[H2O2][Pt(II) complex]. The Pt(IV) products were characterized by NMR spectroscopy and elemental analysis. The geometries and the nature of the frontier molecular orbitals of Pt(IV) complexes containing Pt-O bonds were also studied by means of the density functional theory. Complex 3b is unstable during the crystallization process in CH2Cl2/acetone and gives the binuclear complex [Pt2Me2(Cl)2(μ-OH)2(bhq)2], 4.
Inorganic Chemistry Research
Iranian Chemical Society
2538-1865
3
v.
2
no.
2019
117
128
https://www.inorgchemres.org/article_101647_5ec120f744b9487708330ab6103b866b.pdf
dx.doi.org/10.22036/icr.2019.210340.1057
Magnetite/κ-carrageenan Nanocomposites: A Convenient Recyclable Tool for Cu(II) Ions Adsorption from Aqueous Solution
Gholamhossein
Mohammadnezhad
department of chemistry, Isfahan university of technology, Isfahan 8415683111, Iran
author
Fatemeh
Ariaeinezhad
Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran
author
Frank Steiniger
Steiniger
Center for Electron Microscopy, Jena University Hospital, Ziegelmühlenweg 1, 07743 Jena, Germany
author
text
article
2019
eng
Exceptional 3D magnetite nanoparticles (Fe3O4) with high surface area, flower-like morphology, and suitable interaction with the natural polymeric matrices have been selected as inorganic nano-filler in preparation of magnetite/κ-carrageenan nanocomposites (MCNCs). Chemical and structural properties of MCNCs were studied and characterized by ATR-FTIR, X-ray powder diffraction (XRPD), scanning and transmission electron microscopies (SEM and TEM), and thermogravimetric analyses (TGA). The MCNCs are considered as a magnetic adsorbent for adsorptive removal of contaminations such as Cu(II) from aqueous solutions. Based on adsorption data, MCNC 10 wt.% was selected for adsorption studies and different parameters including pH, contact time, and initial concentration of Cu(II) ions were optimized. The batch sorption mechanism and kinetics were estimated using three reaction kinetic models including pseudo-second-order, Elovich, and intra-particle diffusion. Besides, the adsorbent performance was evaluated by two common isotherm models: Langmuir and Freundlich. More significantly, kinetics and isotherm equilibrium data showed a major fitting with the intra-particle diffusion and Langmuir model, respectively. The maximum value of adsorption capacity to Cu(II) ions was found to be 22.57 mg g−1 (pH = 6, adsorbent dose 0.005g (1 g L-1), 25 °C, 180 rpm, and 80 min). The relative standard deviations (RSDs) for sorbent-to-sorbent reproducibility was 7.5 % (n = 3). The MCNC 10 wt.% was separated easily by a supermagnet and recycled 4 times easily with the adsorption efficiency of 84 % in the final cycle.
Inorganic Chemistry Research
Iranian Chemical Society
2538-1865
3
v.
2
no.
2019
129
144
https://www.inorgchemres.org/article_107022_a4aba070305dbb9f918d8a9d21e379f5.pdf
dx.doi.org/10.22036/icr.2020.209416.1056
Dye and Cobalt Electrolyte Interaction Effect on the Performance of Dye-Sensitized Solar Cell
Zahra
Parsa
Department of Chemistry, Shahid Beheshti University, Evin, 1983963113 Tehran, Iran
author
Pooya
Tahay
Department of Chemistry, Shahid Beheshti University, Evin, 1983963113 Tehran, Iran
author
Navid
Rabiee
Department of Chemistry, Shahid Beheshti University, Evin, 1983963113 Tehran, Iran
author
Nasser
Safari
Department of Chemistry, Shahid Beheshti University, Evin, 1983963113 Tehran, Iran
author
text
article
2019
eng
The effects of changing ligand structures of cobalt complexes as electrolytes on the performance of the dye-sensitized solar cell were investigated. In this paper, cobalt(II/III) tris(2,2′-bipyridine), cobalt(II/III) tris(4,4′-dimethyl-2,2′-bipyridine) and cobalt(II/III) tris(4,4´-dimethoxy-2,2′-bipyridine) complexes as electrolytes in conjugate with organic dye D149 were investigated to consider the correlation of the cobalt complexes structural on the efficiency of the dye-sensitized solar cell. The Voc values of the prepared cells are related to the redox potential of their complexes and the maximum Voc was observed with cobalt(II/III) tris(2,2′-bipyridine) electrolyte. The obtained results represented that the cobalt(II/III) tris(4,4´-dimethyl- 2,2′-bipyridine) electrolyte has the highest efficiency in the solar cell compared with other cobalt complexes. These observed results have been interpreted by a possible interaction between the dye and cobalt complexes, which is more pronounced in the cobalt(II/III) tris(4,4´-dimethoxy- 2,2′-bipyridine) cell. This interaction should be fine-tuning with the structure of dye and complex to increase the efficiency of the dye-sensitized solar cell. In addition, the results demonstrated that a thinner layer of the TiO2 film decrease both the effects of mass transport issues and the charge recombination, therefore, it has significant advantages for cobalt electrolyte.
Inorganic Chemistry Research
Iranian Chemical Society
2538-1865
3
v.
2
no.
2019
145
157
https://www.inorgchemres.org/article_107261_31a615c1291eff48b5bd98c59191eddb.pdf
dx.doi.org/10.22036/icr.2020.219286.1058