Transition Metal Chemistry最新文献_第2页

The mechanical, thermodynamic and electronic characters of TiFe at extreme pressures: first-principles calculation 极压下 TiFe 的机械、热力学和电子特性：第一原理计算

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2024-07-27 DOI: 10.1007/s11243-024-00599-2

Chongyang Fu, Le Zhang, Weiqi Li, Yongyu Yang, Jinrui Yang, Xijian Qi, Xiaojuan Ma

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Electric arc vacuumless synthesis of IV–V group transition metal carbides 电弧无真空合成 IV-V 族过渡金属碳化物

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2024-07-20 DOI: 10.1007/s11243-024-00598-3

Yuliya Z. Vassilyeva, Alexander Ya. Pak, Alexandra I. Kokorina, Zhanar S. Bolatova, Dmitrii O. Glushkov

{"title":"Electric arc vacuumless synthesis of IV–V group transition metal carbides","authors":"Yuliya Z. Vassilyeva, Alexander Ya. Pak, Alexandra I. Kokorina, Zhanar S. Bolatova, Dmitrii O. Glushkov","doi":"10.1007/s11243-024-00598-3","DOIUrl":"https://doi.org/10.1007/s11243-024-00598-3","url":null,"abstract":"Refractory transition metal carbides are of interest due to their high melting point and hardness. This work demonstrates the synthesis of transition metal carbides, such as TiC, VC, ZrC, NbC, HfC, and TaC, by vacuumless electric arc method. Numerical simulation of heat transfer processes in the reaction zone was implemented to predict the parameters (temperature and reaction duration) ensuring synthesis and dominance of the corresponding metal carbide phases over by-products. The obtained parameters were used for a series of experiments conducted to confirm the production of transition metal carbides under specified conditions during arc discharge plasma synthesis. The fabricated materials were analyzed by X-Ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive X-ray spectroscopy techniques in order to assess the parameters of the structure, chemical composition, and particle morphology of the synthesized products. The oxidation properties of each monocarbide were studied by differential thermal analysis, thermal gravimetry and differential scanning calorimetry.","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141741325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Thiobenzamide-based ruthenium complexes: chemical reactivity and promising biological investigations against Leukemia cancer cells 硫代苯甲酰胺基钌配合物：针对白血病癌细胞的化学反应活性和前景广阔的生物学研究

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2024-07-06 DOI: 10.1007/s11243-024-00596-5

Paulo G. F. Azevedo, Luciano V. Pacheco, Felipe E. M. Carneiro, Gabriela C. Fernandes, Denise S. de Sá, Ivanilson P. Santos, Cássio S. Meira, Milena B. P. Soares, Tércio F. Paulo, Eduardo H. S. Sousa, Luiz G. F. Lopes, Carlos D. S. da Silva

{"title":"Thiobenzamide-based ruthenium complexes: chemical reactivity and promising biological investigations against Leukemia cancer cells","authors":"Paulo G. F. Azevedo, Luciano V. Pacheco, Felipe E. M. Carneiro, Gabriela C. Fernandes, Denise S. de Sá, Ivanilson P. Santos, Cássio S. Meira, Milena B. P. Soares, Tércio F. Paulo, Eduardo H. S. Sousa, Luiz G. F. Lopes, Carlos D. S. da Silva","doi":"10.1007/s11243-024-00596-5","DOIUrl":"https://doi.org/10.1007/s11243-024-00596-5","url":null,"abstract":"Two new metal complexes containing the ligand thiobenzamide (TBz), with the formula cis-[RuCl(TBz)(L)2]PF6, where L = 2,2’-bipyridine (bpy) or o-phenanthroline (phen), were synthesized and characterized by cyclic voltammetry and spectroscopic techniques (UV–Vis, IR, 1H and 13C NMR). These compounds showed cytotoxic activity in all cancer cell lines studied. The HL-60 strain was the most sensitive to both metal complexes, with IC50 ranging from 1.5 µmol L−1 to 5.7 µmol L−1. Interestingly, [RuCl(TBz)(bpy)2]PF6 exhibited a significant selectivity index of 6.6 for the cytotoxicity ratio between normal cells (MRC-5) and cancer cells (HL-60). In addition, this metal complex promoted mitochondrial membrane depolarization and increased mitochondrial superoxide production. Finally, synergism was observed between [RuCl(TBz)(bpy)2]PF6 and doxorubicin in combination against a cell model with HL-60 cells. A combinatorial index of 0.27 was observed in this study. In addition, an isobologram study showed points below the isobolographic line, indicating a synergistic effect. These results show promising pharmacological potential for these compounds which deserve further biological investigation.","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly selective and sensitive colorimetric detection of nitrite in drinking water by acetic acid-capped hierarchical flower-like NiO nanosheets structure 利用乙酸封端的分层花朵状纳米氧化镍片结构高选择性、高灵敏度地比色检测饮用水中的亚硝酸盐

IF 1.6 4区化学

Transition Metal Chemistry Pub Date : 2024-07-04 DOI: 10.1007/s11243-024-00591-w

Mohib Ullah, Samiyah Tasleem, Sami Ullah, Waheed Ali Panhwar, Muhammad Ashraf, Raqeeb Ullah, Hina Gul, Nasir Mahmood, Ateeq Ur Rehman, Norah Salem Alsaiari, Li Zhengxin, Ruqia Nazir, Muslim Khan

{"title":"Highly selective and sensitive colorimetric detection of nitrite in drinking water by acetic acid-capped hierarchical flower-like NiO nanosheets structure","authors":"Mohib Ullah, Samiyah Tasleem, Sami Ullah, Waheed Ali Panhwar, Muhammad Ashraf, Raqeeb Ullah, Hina Gul, Nasir Mahmood, Ateeq Ur Rehman, Norah Salem Alsaiari, Li Zhengxin, Ruqia Nazir, Muslim Khan","doi":"10.1007/s11243-024-00591-w","DOIUrl":"10.1007/s11243-024-00591-w","url":null,"abstract":"<div>In the current work, the sensing of nitrite (NO2–) in drinking water was analyzed by a simple and fast colorimetric method, with outstanding sensitivity and selectivity. For this purpose, we have fabricated the three-dimensional (3D) hierarchical flower-like acetic acid-capped NiO nanosheets (NSs) with enhanced surface area and exposed active sites. Different characterization techniques were carried out to elaborate the formation and structural analysis of prepared NiO NSs-based colorimetric sensor, which includes SEM imaging, AFM analysis, XRD, FTIR and BET analysis. The prepared colorimetric sensor was effectively used for the highly sensitive and selective detection of NO2– in drinking water, which exhibit excellent performance including a wide linear nitrite range of 1 × 10–8–3.6 × 10–6 M, where limit of detection (LOD) value is 2.0 × 10–7 M (0.2 μM) and limit of quantification (LOQ) is 6.8 × 10–7 M (0.68 μM) having R2 of 0.999. Moreover, the sensor also suggests strong selectivity toward nitrite as compared to other interfering species present in water sample. Further, different parameters were applied for experimental optimization to obtain the optimal performance of colorimetric sensor, which includes (a) amount of acetic acid-capped NiO NSs, (b) different pH values, (c) different exposure times, (d) different TMB concentrations and (e) different H2O2 concentrations. As a result, we analyzed that the prepared colorimetric nitrite sensing method can be reliably used in real-time analysis for future research work.</div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141549258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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N-doped NiS2 nanosheets array on carbon fiber as an efficient hydrogen evolution reaction electrocatalyst 碳纤维上的 N 掺杂 NiS2 纳米片阵列作为高效氢进化反应电催化剂

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2024-07-04 DOI: 10.1007/s11243-024-00594-7

Feng Jing, Shibo Du, Zhiheng Ding, Xuepeng Chen, Zhen Liu, Hongying Mei

{"title":"N-doped NiS2 nanosheets array on carbon fiber as an efficient hydrogen evolution reaction electrocatalyst","authors":"Feng Jing, Shibo Du, Zhiheng Ding, Xuepeng Chen, Zhen Liu, Hongying Mei","doi":"10.1007/s11243-024-00594-7","DOIUrl":"https://doi.org/10.1007/s11243-024-00594-7","url":null,"abstract":"Electrocatalytic hydrogen production holds great promise as a means of generating green energy. In order to achieve the large-scale industrial application, low-cost and highly efficient electrocatalysts are the key factors. The open mesh nanosheet array structure and doping can expose more active sites and effectively enhance electron transport during the hydrogen evolution reaction. Herein, a simple nanostructured electrocatalyst consisting of nitrogen-doped NiS2 nanosheets array grown on carbon fiber cloth (N-NiS2/CF) has been constructed. Benefiting from its nitrogen-doped, nanosheets array and intrinsic pyrite like structure, the optical N-NiS2/CF electrode exhibits relatively excellent catalytic activity and long-time stability in both alkaline and acidic media. Especially, to drive the current density of 10 mA cm−2, only an overpotential of 96 mV and 163 mV were needed in 1.0 M KOH and 0.5 M H2SO4, respectively. The as obtained N-NiS2/CF can be a promising non-noble-metal electrocatalyst for practical hydrogen production application.","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141549259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, crystal structure, Hirshfeld surface analysis, and characterization of a new 1-D dicyanamide-bridged, polymeric Mn(III) complex 一种新的一维双氰胺桥接聚合锰（III）络合物的合成、晶体结构、Hirshfeld 表面分析和表征

IF 1.6 4区化学

Transition Metal Chemistry Pub Date : 2024-06-29 DOI: 10.1007/s11243-024-00589-4

Uttam Mandal, Corrado Rizzoli, Bikash Chakraborty, Swapnadip Roy, Debasis Bandyopadhyay, Santanu Mandal

{"title":"Synthesis, crystal structure, Hirshfeld surface analysis, and characterization of a new 1-D dicyanamide-bridged, polymeric Mn(III) complex","authors":"Uttam Mandal, Corrado Rizzoli, Bikash Chakraborty, Swapnadip Roy, Debasis Bandyopadhyay, Santanu Mandal","doi":"10.1007/s11243-024-00589-4","DOIUrl":"10.1007/s11243-024-00589-4","url":null,"abstract":"<div>A 1-D dicyanamide (DCA)-bridged, polymeric manganese(III) Schiff base complex, ({[text{Mn}{L}_{2}({mu }_{text{1,5}}-text{dca})] }_{n})(1), where HL is 5-methoxy-2-[(E)-{[2-(thiophen-2-yl)ethyl]imino}methyl]phenol, a bidentate Schiff base prepared from the condensation reaction of 2-hydroxy-4-methoxybenzaldehyde and 2-thiopheneethylamine, has been synthesized by stirring Mn(ClO4)2·6H2O, Schiff base (HL), and sodium dicyanamide (1:2:1 M ratio) in acetonitrile medium. The complex was characterized by FTIR, UV–Vis absorption spectra, TGA analysis, and single-crystal X-ray diffraction studies. According to X-ray diffraction study, the compound crystallizes in a monoclinic system with space group P21/n. The manganese atom of the complex is in octahedral coordination with two imine nitrogen atoms (N1, N1i) and two phenoxy oxygen atoms (O1, O1i) of two molecules of Schiff base ligand, which defines the equatorial plane around Mn(III), and the axial sites are occupied by two nitrogen atoms (N2, N2i) of DCA. The Hirshfeld surface (HS) analysis was also performed by means of the crystallographic data to inspect the nature and quantitative influence of all possible non-covalent intermolecular contacts inside the crystal lattice. The direct optical band gap energy has been calculated using the Tauc plot.</div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Fabrication of a new nickel iron-titanate perovskite composite with enhanced visible light photocatalytic activity 制备具有更强可见光光催化活性的新型镍铁钛过氧化物复合材料

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2024-06-29 DOI: 10.1007/s11243-024-00595-6

Byung-Geon Park

{"title":"Fabrication of a new nickel iron-titanate perovskite composite with enhanced visible light photocatalytic activity","authors":"Byung-Geon Park","doi":"10.1007/s11243-024-00595-6","DOIUrl":"https://doi.org/10.1007/s11243-024-00595-6","url":null,"abstract":"In this study, a nickel iron-titanate (NiFeTiO3) perovskite composite was prepared newly and its photocatalytic activity was evaluated under visible light irradiation. The composite material was prepared by a synthetic method combining the sol–gel method and the solvothermal method. The physicochemical and optical properties of the prepared NiFeTiO3 perovskites were investigated. In this study, a newly prepared NiFeTiO3 perovskite composite was evaluated for its photocatalytic activity under visible light irradiation. The composite material was synthesized using a combination of the sol–gel method and the solvothermal method. The physicochemical and optical properties of the prepared NiFeTiO3 perovskites were investigated. The perovskite composites with the NiFeTiO3 structure had excellent absorption ability for visible light above 800 nm. Its bandgap energy was found to be approximately 1.8 eV. The photocatalytic activity of the NiFeTiO3 composite was evaluated under visible light irradiation. The NiFeTiO3 had superior visible light absorption ability compared to NiTiO3. It had excellent decomposition performance for methylene blue and formaldehyde. In addition, the photocatalytic activity for sterilizing pathogenic bacteria was much higher than that of NiTiO3 perovskite. In the water splitting by solar energy, the NiFeTiO3 catalysts produced hydrogen through a photocatalytic decomposition reaction. The NiFeTiO3 composite was considered a perovskite composite with significantly improved photocatalytic function due to its high sensitivity to visible light.","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, crystal structures, magnetism and fluorescence of manganese(II) and copper(II) complexes based on 2,5-diketopiperazine-N,N′-diacetic acid ligands 基于 2,5-二酮哌嗪-N,N′-二乙酸配体的锰（II）和铜（II）络合物的合成、晶体结构、磁性和荧光特性

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2024-06-27 DOI: 10.1007/s11243-024-00592-9

Meijing Wang, Yongping Ma, Chengqiang Wu, Wei Luo, Jiaojiao Wang, Zhen Chen

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Silver and ruthenium complexes with anthracene functionalized N-heterocyclic carbene ligands: catalytic and cytotoxicity properties 具有蒽功能化 N-杂环碳配体的银和钌配合物：催化和细胞毒性特性

IF 1.6 4区化学

Transition Metal Chemistry Pub Date : 2024-06-24 DOI: 10.1007/s11243-024-00590-x

Mert Olgun Karataş, Ünzile Keleştemur, Akın Mumcu, Namık Özdemir, Ali Erdoğan, Hasan Küçükbay

{"title":"Silver and ruthenium complexes with anthracene functionalized N-heterocyclic carbene ligands: catalytic and cytotoxicity properties","authors":"Mert Olgun Karataş, Ünzile Keleştemur, Akın Mumcu, Namık Özdemir, Ali Erdoğan, Hasan Küçükbay","doi":"10.1007/s11243-024-00590-x","DOIUrl":"10.1007/s11243-024-00590-x","url":null,"abstract":"<div>In this study, we have synthesized two Ag (2a and 2b) and two Ru (3a and 3b) complexes with anthracene substituted N-heterocyclic carbene (NHC) ligands. Ag‒NHC complexes have been synthesized by the interaction of corresponding benzimidazolium chloride and Ag2O. Ru‒NHC complexes have been synthesized by the transmetalation reaction between corresponding Ag‒NHC and [RuCl2(p-cymene)]2 dimer. The synthesized complexes have been characterized by elemental analysis, NMR (1H and 13C NMR), and mass (high resolution mass spectroscopy, HRMS) spectroscopic techniques. In order to assess the catalytic potential of the Ru‒NHC complexes, we have conducted experiments involving the hydrosilylation of terminal alkynes. Both complexes have exhibited a moderate level of catalytic activity, achieving conversions ranging from 70 to 90%, along with a substantial β-(Z) selectivity within the range of 80–90%. Furthermore, we have also subjected the benzimidazolium chlorides (1a and 1b), Ag‒NHCs and Ru‒NHCs to cytotoxicity testing using human breast cancer cells (MCF-7) and human colorectal cancer cells (Caco-2). The results of these assays have demonstrated that all compounds strongly inhibit the proliferation of both cell lines.</div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Recent advances in metal-mediated oxidations with mCPBA 用 mCPBA 进行金属介导氧化的最新进展

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2024-06-24 DOI: 10.1007/s11243-024-00593-8

Ravi Varala, Surbhi Dhadda, Vittal Seema, Mohammed Amanullah, Mohamed Hussien, Mohammed Mujahid Alam

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