无机化学期刊(英文)最新文献_第2页

Synthesis, Characterization and Biological Activities of Binuclear Metal Complexes of 2-Benzoylpyridine and Phenyl(Pyridin-2-yl) Methanediol Derived from 1-Phenyl-1-(Pyridin-2-yl)-N-(Pyrimidin-2-yl) Methanimine Dihydrate Schiff Base 1-苯基-1-（吡啶-2-基）-N-（嘧啶-2-基）甲基苯胺二水合物Schiff碱衍生的2-苯甲酰基吡啶和苯基（吡啶-2-基甲二醇双核金属配合物的合成、表征及生物活性

无机化学期刊(英文) Pub Date : 2021-01-25 DOI: 10.4236/OJIC.2021.111002

Francis A. Ngounoue Kamga, E. Mainsah, Maurice Kuate, P. Ndifon

{"title":"Synthesis, Characterization and Biological Activities of Binuclear Metal Complexes of 2-Benzoylpyridine and Phenyl(Pyridin-2-yl) Methanediol Derived from 1-Phenyl-1-(Pyridin-2-yl)-N-(Pyrimidin-2-yl) Methanimine Dihydrate Schiff Base","authors":"Francis A. Ngounoue Kamga, E. Mainsah, Maurice Kuate, P. Ndifon","doi":"10.4236/OJIC.2021.111002","DOIUrl":"https://doi.org/10.4236/OJIC.2021.111002","url":null,"abstract":"The Schiff base, 1-phenyl-1-(pyridin-2-yl)-N-(pyrimidin-2-yl)methanimine dihydrate (L1) has been synthesized by the condensation reaction between 2-aminopyrimidine and 2-benzoylpyridine and characterized using 13C-NMR, 1H-NMR, microanalysis, FT-IR, DEPT-135, HSQC, HMBC, COZY, NOESY. The reaction of 1-phenyl-1-(pyridin-2-yl)-N-(pyrimidin-2-yl)methanimine dihydrate (L1) with salts of V(IV), Co(II) and Cu(II), however, resulted in the hydrolysis of L1 to give binuclear metal complexes of 2-benzoylpyridine (L2) and phenyl(pyridin-2-yl)methanediol (L3) which were characterized using UV-visible spectroscopy, and TGA. The single crystal x-ray structure determined for the Copper(II) complex revealed that we obtained a compound previously obtained using a different method of synthesis. The Schiff base ligand (L1) is soluble in methanol, ethanol, DMSO, acetone and DMF. Microanalysis and Spectroscopic studies indicated that binuclear metal complexes were obtained by the coordination of metal ion to 2-benzoylpyridine (L2) and phenyl(pyridin-2-yl)methanediol (L3) from the hydrolysis of L1. Spectroscopic and elemental analysis reveal the formation of square pyramidal complexes of Co(II) and Cu(II) and a square planar complex of V(IV). In vitro antibacterial and antifungal activity against three bacterial strains (Escherichia coli, Klebsiella pneumoniae and Staphylococcus aureus) and three fungal stains (Candida albicans, Candida glabrata and Candida parapsilosis) showed moderate biological activity. Antioxidant studies reveal that only the binuclear Co(II) and oxovanadium(II) complexes are potent to eliminate free radicals.","PeriodicalId":70986,"journal":{"name":"无机化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43282716","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}

引用次数: 1

Structural, Theoretical and Biological Studies of (Z)-3-Amino-N-(3-Amino Pyrazine-2-Carbonyl) Pyrazine-2-Carbohydrazonic Acid (APA; L) and Its Cu2+, Co2+, Pt4+ and Pd2+ Chelates (Z)-3-氨基- n -(3-氨基吡嗪-2-羰基)吡嗪-2-碳腙酸(APA)的结构、理论和生物学研究L)及其Cu2+， Co2+， Pt4+和Pd2+螯合物

无机化学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojic.2021.104010

Mosaad R. Mlahi, M. Mostafa

{"title":"Structural, Theoretical and Biological Studies of (Z)-3-Amino-N-(3-Amino Pyrazine-2-Carbonyl) Pyrazine-2-Carbohydrazonic Acid (APA; L) and Its Cu2+, Co2+, Pt4+ and Pd2+ Chelates","authors":"Mosaad R. Mlahi, M. Mostafa","doi":"10.4236/ojic.2021.104010","DOIUrl":"https://doi.org/10.4236/ojic.2021.104010","url":null,"abstract":"New chelates derived from the novel ligand, (Z)-3-amino-N-(3-amino pyrazine-2-carbonyl)pyrazine-2-carbohydrazonic acid (APA, L), with Cu 2+ , Co 2+ , Pt 4+ and Pd 2+ salts were investigated. The results suggest that APA acts as mononegative tridentate in the case of Cu 2+ , binegative tetradentate in the case of Co 2+ and as mononegative bidentate towards Pt 4+ and Pd 2+ chelates. The results of the corrected µ eff . and spectral suggest the structures of the isolated chelates. The results of the corrected µ eff . and spectral suggest the geometries of the isolated chelates. Molecular modeling is deduced and chemical reactivity, energy components for chelates and also MEP for APA is illustrated. In Vitro, the SOD and radical scavengers like activity of the synthesized compounds Hep G2 liver cancer cells and cytotoxic activity were checked. Metal chelates show potent anti-oxidative activity. The results of cytotoxic activity assay against hepatocellular carcinoma cell line Hep G2 confirmed that Pt 4+ complex has the highest value, while APA, Cu 2+ , Co 2+ and Pd 2+ chelates have no significant cytotoxic activity.","PeriodicalId":70986,"journal":{"name":"无机化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70662708","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}

引用次数: 0

Adsorption of Copper (II) Ions in Aqueous Solution by a Natural Mouka Smectite and an Activated Carbon Prepared from Kola Nut Shells by Chemical Activation with Zinc Chloride (ZnCl₂) 天然蒙脱石和可乐果壳活性炭对水溶液中铜(II)离子的吸附

无机化学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojic.2021.114009

Phil Lewis Mpampoungou Langama, J. Anguilè, Albert Novy Messi Me Ndong, Adam Bouraima, C. Bissielou

引用次数: 1

Structural, Theoretical and Biological Studies of (Z)-3-Amino-N-(3-Amino Pyrazine-2-Carbonyl) Pyrazine-2-Carbohydrazonic Acid (APA; L) and Its Cu²⁺, Co²⁺, Pt⁴⁺ and Pd²⁺ Chelates (Z)-3-氨基- n -(3-氨基吡嗪-2-羰基)吡嗪-2-碳腙酸(APA)的结构、理论和生物学研究L)及其Cu2+， Co2+， Pt4+和Pd2+螯合物

无机化学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojic.2021.114010

Mosaad R. Mlahi, M. Mostafa

引用次数: 0

Synthesis and Characterization of Two Cu(II) Nitronyl Nitroxide Complexes 两种Cu(II)硝基氮氧化物配合物的合成与表征

无机化学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/OJIC.2021.113004

Youjuan Zhang, Caiwen Zhang, Jing-Tang Chen

引用次数: 0

Comparative Studies of Some Novel Cu(II) Polymeric Complexes Derived from Cyanoacetylhydrazine (CAH; L). The Role of Solvents Used on the Structure and Geometry of the Isolated Cu²⁺ Complexes 几种新型氰乙酰肼(CAH) Cu(II)聚合物配合物的比较研究L).溶剂对分离Cu2+配合物的结构和几何的作用

无机化学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojic.2021.114008

M. Mostafa

引用次数: 1

Adsorption of Copper (II) Ions in Aqueous Solution by a Natural Mouka Smectite and an Activated Carbon Prepared from Kola Nut Shells by Chemical Activation with Zinc Chloride (ZnCl2) 天然蒙脱石和可乐果壳活性炭对水溶液中铜(II)离子的吸附

无机化学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojic.2021.104009

Phil Lewis Mpampoungou Langama, J. Anguilè, Albert Novy Messi Me Ndong, Adam Bouraima, C. Bissielou

{"title":"Adsorption of Copper (II) Ions in Aqueous Solution by a Natural Mouka Smectite and an Activated Carbon Prepared from Kola Nut Shells by Chemical Activation with Zinc Chloride (ZnCl2)","authors":"Phil Lewis Mpampoungou Langama, J. Anguilè, Albert Novy Messi Me Ndong, Adam Bouraima, C. Bissielou","doi":"10.4236/ojic.2021.104009","DOIUrl":"https://doi.org/10.4236/ojic.2021.104009","url":null,"abstract":"The aim of this work was to test the adsorption efficiency of copper (II) ions in an aqueous solution on Natural Smectite (NS) and Activated Carbon (AC). The experiments carried out in batch mode made it possible to determine the stirring time, the adsorbent mass, the pH, the initial concentration of copper (II) ions, the isotherms and the adsorption kinetics. It appears that the stirring time was 15 minutes for the AC and 20 minutes for the NS. The adsorption was at maximum for the two adsorbents at optimum pH of 3.5 for a mass of 0.05 g each. The quantity of copper (II) ions adsorbed was 26.6 mg/L for NS and 36.6 mg/g for AC of a concentration of 600 mg/L each. The Langmuir isotherm was the one that best described the adsorption process for the two adsorbents. The adsorption kinetics obtained was that of the pseudo second-order for our two adsorbents. The results obtained showed that these two adsorbents were effective for the adsorption of copper (II) ions in an aqueous solution. (II) Ions Aqueous Solution a Natural and an Activated Carbon Prepared from Kola Nut Shells by Chemical Activation with Zinc Chloride (ZnCl 2 ).","PeriodicalId":70986,"journal":{"name":"无机化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70662647","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}

引用次数: 0

Synthesis and Structural Characterization of a New Two-Dimensional Polymeric Hybrid Material {[Cu3(μ3-1,2,3-BTC)(μ2-1,2,3-BTC)(en)3(OH2)2(OH)(μ2-OH2)]2·5H2O·O}n 新型二维高分子杂化材料{[Cu3(μ3-1,2,3- btc)(μ2-1,2,3- btc)(en)3(OH2)2(OH)(μ2-OH2)]2·5H2O·O}n的合成与结构表征

无机化学期刊(英文) Pub Date : 2020-09-21 DOI: 10.4236/OJIC.2020.104006

A. Djoumbissie, Francis W. Njifack, A. T. Djampouo, T. R. Fomuta, Golngar Djimassingar, A. Kuate, J. Ngoune

{"title":"Synthesis and Structural Characterization of a New Two-Dimensional Polymeric Hybrid Material {[Cu3(μ3-1,2,3-BTC)(μ2-1,2,3-BTC)(en)3(OH2)2(OH)(μ2-OH2)]2·5H2O·O}n","authors":"A. Djoumbissie, Francis W. Njifack, A. T. Djampouo, T. R. Fomuta, Golngar Djimassingar, A. Kuate, J. Ngoune","doi":"10.4236/OJIC.2020.104006","DOIUrl":"https://doi.org/10.4236/OJIC.2020.104006","url":null,"abstract":"The reaction of benzene-1,2,3-tricarboxylate copper(II) trihydrate \u0000(Cu3(1,2,3-BTC)2·3H2O) and ethylenediamine (en) gave after recrystallization from methanol at room temperature violet crystalline solid of the polymeric two dimensional material \u0000{[Cu3(μ3-1,2,3-BTC)(μ2-1,2,3-BTC)(en)3(OH2)2(OH)(μ2-OH2)]2·5H2O·O}n (1) as identified by single crystal X-ray diffraction analysis. The compound was also characterized by elemental analysis, FT-IR spectroscopy, UV-vis spectroscopy, thermogravimetric analysis (TGA) and magnetic susceptibility. The molecular structure indicates crystallization in the triclinic space group P-1 with the unit cell parameters a = 12.1205(3) A, b = 12.7026(3) A, c = 13.9890(3) A, α = 75.034(1)°, β = 74.957(1)°, γ = 68.415(1)°. Structural analysis also revealed that the dimeric compound is connected by Cu-O-Cu bridges and the dimer is further converted into a polymeric chain structure through bridging of one benzene-1,2,3-tricarboxylate ligand. Different coordination modes are observed at the copper atom. The Cu atom at the center is octahedral while the two other ones are pentacoordinated. Thermal analysis of the compound showed decomposition processes, while magnetic studies indicated a magnetic susceptibility μ of 3.21 BM.","PeriodicalId":70986,"journal":{"name":"无机化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41271474","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}

引用次数: 1

Synthesis and Crystal Structure of Bis(N’-(Pyridine-3-Carboxaldehyde) Isonicotinoylhydrazone) Zinc(II) 双(N ' -(吡啶-3-甲醛)异烟碱酰腙)锌(II)的合成与晶体结构

无机化学期刊(英文) Pub Date : 2020-07-30 DOI: 10.4236/ojic.2020.103004

Sally-Judith E. Ntum, C. Mariam, E. Mainsah, P. Ndifon

引用次数: 0

Preparation, Characterization and Antimicrobial Studies of Mn(II) and Fe(II) Complexes with Schiff Base Ligand Derived from 2-aminophenol and 3-formyl-2-hydroxy-6-methoxyquinoline 2-氨基苯酚和3-甲酰基-2-羟基-6-甲氧基喹啉席夫碱配合物的制备、表征和抗菌研究

无机化学期刊(英文) Pub Date : 2020-04-30 DOI: 10.4236/ojic.2020.102003

A. M. Jabbi, H. Aliyu, S. Isyaku, A. Kabir

{"title":"Preparation, Characterization and Antimicrobial Studies of Mn(II) and Fe(II) Complexes with Schiff Base Ligand Derived from 2-aminophenol and 3-formyl-2-hydroxy-6-methoxyquinoline","authors":"A. M. Jabbi, H. Aliyu, S. Isyaku, A. Kabir","doi":"10.4236/ojic.2020.102003","DOIUrl":"https://doi.org/10.4236/ojic.2020.102003","url":null,"abstract":"Schiff \u0000base derived from 2-aminophenol and 3-formyl-2-hydroxy-6-methoxyquinoline and \u0000its Mn(II) and Fe(II) complexes were synthesized and characterized by melting \u0000point and decomposition temperature, elemental analysis, molar conductivity, infrared \u0000(IR) spectral analysis, atomic absorption spectroscopy (AAS) analysis, \u0000solubility test, and magnetic susceptibility. The Fourier-transform infrared \u0000spectroscopy (FTIR) spectral data of the Schiff base determined showed a band at 1622 cm−1 and this was \u0000assigned to the v (C=N), which is a feature of azomethine group. The \u0000same band was observed to shift to lower frequencies 1577 and 1599 cm−1 in the complexes suggesting coordination of the Schiff base with the respective \u0000metal(II) ions. Molar conductance \u0000values 14.58 and 12.65 Ω−1∙cm2∙mol−1 show that \u0000the metal complexes were non-electrolyte in nature. The magnetic susceptibility \u0000of the complexes was determined and the gram magnetic susceptibility of the \u0000complexes was found to be positive, revealing that they are paramagnetic. The \u0000elemental analysis of the complexes for C, N and H determined suggested 1:1 \u0000metal to ligand ratio. The result of the antimicrobial studies showed that, the \u0000metal(II) complexes exhibited better antibacterial and antifungal activity than \u0000the Schiff base.","PeriodicalId":70986,"journal":{"name":"无机化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41384444","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}

引用次数: 4