{"title":"Synthesis and Characterization of CuO Nanocomposites Doped with Cr 3+ and Mn 2+ for Efficient Photodegradation of Organic Dyes (MB & MO)","authors":"Masoud Memar","doi":"10.2139/ssrn.3639524","DOIUrl":"https://doi.org/10.2139/ssrn.3639524","url":null,"abstract":"Nanocomposites CuO/CuCr 2 O 4 /CuSO 4 (1) and CuO/CuMn 2 O 4 /CuSO 4 (2) were synthesized by chemical deposition, and their structural, morphological, optical, and thermal properties were investigated by FTIR, XRD, FESEM, TEM, EDX, UV-Vis DRS, and TG-DTA. From the analysis of the obtained data, analysis of FESEM, TEM, and EDS data revealed that nanocomposites have a sheet structure and that the elements are homogeneously scattered throughout the structure. The doped Cr and Mn elements in nanocomposites (1) and (2) form the CuCr 2 O 4 and CuMn 2 O 4 spinel structures, respectively. Thermal analysis shows that the compounds have a high thermal stability. Apart from that, the photocatalytic activity of the compounds is very effective in cationic (MB) and anionic (MO) degradation colored pollutants in the presence of H 2 O 2 and under sunlight. A kinetic study showed that degradation follows the first-order kinetics; therefore, these nanocomposites are good candidates for color degradation with good efficiency in wastewater treatment.","PeriodicalId":205853,"journal":{"name":"ChemRN: Synthetic Inorganic Chemistry (Topic)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129599266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Structural Characterization of Fe(Ii) Complexes with Hemilabile Phosphine-Based P,O Donor Ligands: A Combined Experimental and Computational Study","authors":"Nabanita Saikia, Malabika Borah, P. Das","doi":"10.2139/ssrn.3597980","DOIUrl":"https://doi.org/10.2139/ssrn.3597980","url":null,"abstract":"Iron(II) complexes of the type [FeCl 2 (P∩X) 2 ] [P∩X = o -(diphenylphosphino)benzaldehyde{PPh 2 ( o -C 6 H 4 CHO)}( 1 ) and o -(diphenylphosphino)benzoic acid {PPh 2 ( o -C 6 H 4 COOH)}( 2 )] have been synthesized by the reaction of FeCl 2 .4H 2 O with respective ligands in DMF solution under refluxing condition. The complexes were characterized by elemental analysis, ESI-mass, Fourier Transform Infrared spectra (FTIR), UV-Vis, 1 H and 31 P{ 1 H} NMR spectroscopy. From the FTIR measurements, though the structures are predicted to be trans , it is not confirmed as crystal structures of the complexes are not yet available. In order to confirm their stable structures, computational calculations were performed to provide detailed molecular-level comparison of the structures, frontier molecular orbitals, electronic, and optical properties using first-principles density functional theory (DFT) method. The gas phase calculations indeed confirm the trans -isomers to be the minimum energy geometries compared to cis -isomers, with the energy difference of 8-9.3 kcal/mol between the geometrical isomers. The natural bonding orbital calculation on trans -isomers showed that intramolecular ligand → metal charge transfer stabilizes the complexes. Further, time dependent DFT (TDDFT) calculations were employed to interpret the optical properties of the trans -isomers of the complexes. Our combined integrative approach provided consistent agreement at both experimental and theoretical levels and showed that the trans structures are the most preferred structures for the two complexes.","PeriodicalId":205853,"journal":{"name":"ChemRN: Synthetic Inorganic Chemistry (Topic)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126481004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maliha Asma, K. Latafat, Toshiyuki Misawa, Takeru Ito, A. Sokolov, M. Sher, Munib Ahmad Shafique, F. Rahman, N. Bukhari, S. A. Tirmizi
{"title":"Synthesis Characterization and Magnetic Properties of Wells-Dawson Polyoxometalate Containing Stabilized Ni (Ii) Counter Ion","authors":"Maliha Asma, K. Latafat, Toshiyuki Misawa, Takeru Ito, A. Sokolov, M. Sher, Munib Ahmad Shafique, F. Rahman, N. Bukhari, S. A. Tirmizi","doi":"10.2139/ssrn.3604918","DOIUrl":"https://doi.org/10.2139/ssrn.3604918","url":null,"abstract":"The monomeric Ni(II) containing Wells-Dawson polyoxometalate (POM) complex K 2 Rb 6 Ni 0.33 [P 2 W 18 O 62 ]Cl 2 ~15.3H 2 O (K 2 Rb 6 -1) was synthesized by the reaction of [Ni 2 (μ-OH 2 )(O 2 CCMe 3 ) 4 (HO 2 CCMe 3 ) 4 ] and K 6 [P 2 W 18 O 62 ]. 19H 2 O in aqueous medium. The compound had been characterized by elemental analysis, FTIR, TGA and single crystal XRD (trigonal, space group R m , cell length a = 37.3660(4), b = 37.3660(4), c = 12.8340(2) Å, α = 90, β = 90, γ = 120°, V = 15518.4(3), Z = 9). Oxidation state of Ni(II) was calculated through bond valence sum (BVS). The magnetic susceptibility study showed magnetization with temperature range 5K-300K.","PeriodicalId":205853,"journal":{"name":"ChemRN: Synthetic Inorganic Chemistry (Topic)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130938859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ying-Ying Huang, Qing-Dou Xu, Yu-ying Yang, Yang Liu, Yong He, Shengmin Hu, Xintao Wu, T. Sheng
{"title":"Three Cyanide-Bridged Fe II-M II (M = Fe, Co and Mn) Complexes: Synthesis, Crystal Structures and Magnetic Properties","authors":"Ying-Ying Huang, Qing-Dou Xu, Yu-ying Yang, Yang Liu, Yong He, Shengmin Hu, Xintao Wu, T. Sheng","doi":"10.2139/ssrn.3745847","DOIUrl":"https://doi.org/10.2139/ssrn.3745847","url":null,"abstract":"Three dinuclear cyanide-bridged complexes Fe II (PY 5 OMe 2 )CNM II (PY 5 OMe 2 )[OTf] 3 (M = Fe 1 , Co 2 , Mn 3 ; PY 5 OMe 2 = 2,6-bis-((2-pyridyl)methoxymethane)pyridine OTf = CF 3 SO 3- ) have been synthesized and characterized. Single-crystal diffraction analyses show these three dinuclear compounds are very similar in structure. And the M-N (M = Fe, Co and Mn) bond lengths for complexes 1 - 3 indicate that 2 and 3 are typical of a high spin (HS) complexes and 1 is evident a low spin (LS) Fe (II) complex at room temperature, confirmed by the temperature dependence of magnetic susceptibilities of complexes 1-3 . The different magnetic behaviors of complexes 1 - 3 reveal that in the three complexes all the cyanide-carbon coordinated Fe (II) are low-spin, and Co (II) for 2 and Mn (II) for 3 are both in a high-spin state through 2-400 K but the cyanide-nitrogen coordinated Fe (II) for complex 1 begins to occur a spin crossover (SCO) transition from 300 K.","PeriodicalId":205853,"journal":{"name":"ChemRN: Synthetic Inorganic Chemistry (Topic)","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122654718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Uflyand, V. Tkachev, V. Zhinzhilo, G. Dzhardimalieva
{"title":"Study of the Products of the Interaction of Cobalt(II) Acetate with 2-Iodoterephthalic Acid and 1,10-Phenanthroline","authors":"I. Uflyand, V. Tkachev, V. Zhinzhilo, G. Dzhardimalieva","doi":"10.2139/ssrn.3662171","DOIUrl":"https://doi.org/10.2139/ssrn.3662171","url":null,"abstract":"A B S T R A C TIn the present work, the interaction of cobalt(II) acetate with 2-iodoterephthalic acid and 1,10-phenanthroline (phen) in N,N-dimethylformamide (DMF) was studied. The reaction leads to the formation of two products: hexakis(N,N-dimethylformamide-κO)cobalt(II) bis(iodide) (compound 1) and MOF [Co(TP)(phen)·2DMF·2H2O] (compound 2), where TP is terephthalate dianion. Compound 1 crystallizes in the monoclinic space group Р2 1/с with cell parameters a = 14.2974(4) Å, b = 10.7983(4) Å, c = 20.6437(9) Å, V = 3183.23 Å3. The MOF was characterized by elemental analysis, infrared spectrometry, X-ray diffraction, scanning electron microscopy, thermogravimetry and volumetric nitrogen adsorption/desorption. The sample has permanent porosity and a microporous structure with a large surface area corresponding to the adsorption type I. Thermolysis of MOF leads to the formation of nitrogen-doped carbon nanomaterials Co/CoO@C.","PeriodicalId":205853,"journal":{"name":"ChemRN: Synthetic Inorganic Chemistry (Topic)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127227771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chiral Tricyclic 1,2,3-Triazol-3-Ylidene–Pd(II) Complexes of Cyclohexene Oxide Scaffold: Synthesis, Structure, and Characterizations","authors":"M. Gangwar, R. Butcher","doi":"10.2139/ssrn.3690933","DOIUrl":"https://doi.org/10.2139/ssrn.3690933","url":null,"abstract":"We herein report the two novel well-defined palladium(II) complexes 1(b−c), of the chiral N-fused tricyclic 1,2,3-triazolium-derived mesoionic carbenes (MIC) ligand 1a. The chiral tricyclic PEPPSI type complex namely, trans-{2-methyl-(5aS,9aS)-5a,6,7,8,9,9a-hexahydro-4H-benzo[b][1,2,3]triazolo[1,5-d][1,4]oxazin-3-ylidene}PdI2(pyridine)} (1b), and the chiral tricyclic bis(tz-MIC)-palladium complex namely, {2-methyl-(5aS,9aS)-5a,6,7,8,9,9a-hexahydro-4H-benzo[b][1,2,3]triazolo[1,5-d][1,4]oxazinium-3-ylidene}2PdCl2} (1c). The chiral tricyclic (tz-MIC)PdI2(pyridine) type PEPPSI complex (1b) was obtained by direct reaction of the corresponding chiral tricyclic 1,2,3-triazolium-derived mesoionic carbenes (MIC) ligand 1a, by treatment with PdCl2 in the presence of K2CO3 as a base in pyridine in 87% yield. (Scheme 1). The chiral tricyclic 1,2,3-triazolium iodide salt (1a) was converted to its in-situ silver analogue by reaction with Ag2O and then subsequently upon treatment with (COD)PdCl2 to produce the chiral tricyclic (tz-MIC)2PdCl2 type palladium complex (1c). All these palladium complexes were isolated for the first time and structurally characterized by 1H NMR and 13C{1H}-NMR spectroscopy, FT-IR spectroscopy, mass spectrometry, elemental analysis and single crystal X-ray crystallography.","PeriodicalId":205853,"journal":{"name":"ChemRN: Synthetic Inorganic Chemistry (Topic)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125156454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Characterization a Series of Complexes and Their Photocatalytic Hydrogen Production","authors":"Yan-Ju Huang, Jun Zhang","doi":"10.2139/ssrn.3649025","DOIUrl":"https://doi.org/10.2139/ssrn.3649025","url":null,"abstract":"In this paper, a series of complexes [Ni(HNOR)2]n•5nH2O 1, [Cd(HNOR) 2 ] n 2 , [Zn(HNOR) 2 •2H 2 O] 3 and [Zr 2 (NOR) 4 ] n •3nH 2 O 4 ( H 2 NOR = Norfloxacin ) were synthesized by hydrothermal process. The structures of the complexes were determined by single-crystal X-ray diffraction. The complexes were characterized by IR and elemental analysis. At the same time, photocatalytic hydrogen production using the composite material photocatalysts under the visible light were studied with respect to reaction solvent, the composite material photocatalysts complex 1/g-C 3 N 4 and complex 4/g-C 3 N 4 displayed excellent photocatalytic rate of hydrogen production.","PeriodicalId":205853,"journal":{"name":"ChemRN: Synthetic Inorganic Chemistry (Topic)","volume":"287 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132418951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}