Transition Metal Chemistry最新文献_第6页

Photocatalytic CO2 reduction to CO by Cobalt(II) Pyridinyl-1,3,5-Triazine-Diamine complexes 吡啶-1,3,5-三嗪-二胺钴(II)复合物光催化二氧化碳还原为 CO

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Transition Metal Chemistry Pub Date : 2023-10-08 DOI: 10.1007/s11243-023-00557-4

Leiyu Wang, Jing Chen, Tingting Yang, Yingying Liu, Zhenguo Guo, Jianhui Xie

{"title":"Photocatalytic CO2 reduction to CO by Cobalt(II) Pyridinyl-1,3,5-Triazine-Diamine complexes","authors":"Leiyu Wang, Jing Chen, Tingting Yang, Yingying Liu, Zhenguo Guo, Jianhui Xie","doi":"10.1007/s11243-023-00557-4","DOIUrl":"10.1007/s11243-023-00557-4","url":null,"abstract":"<div>The development of molecular photocatalytic systems for CO2 reduction is a continuous challenge for chemists. Herein, the photocatalytic reductions of CO2 by [CoII(L1)(η1-ONO2)2] (1) (L1 = 6,6'-(pyridine-2,6-diyl)bis(1,3,5-triazine-2,4-diamine)) and [CoII(L2)(H2O)2]2+ (2) (L2 = 6,6'-([2,2'-bipyridine]-6,6'-diyl)bis(1,3,5-triazine-2,4-diamine)) have been investigated. With Ir(ppy)3 as the photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole as the sacrificial reductant in DMF/triethylamine solution under irradiation by white light-emitting diode (λ > 420 nm), CO was selectively produced with a turnover number (TON) of 36 and 89 for 1 and 2, respectively. Based on the electrochemical studies, the triply reduced [Co0(L2•)]ˉ species from 2 is found to be responsible for the activation of CO2 with a large rate constant of k = 506 M−1 s−1. However, the strong CO binding constant of CoI(L2)-CO adduct (K = 5.01 × 106) and the slow CO release from Co0(L2)-CO adduct limit the catalytic efficiency.</div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135199997","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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Deciphering the impact of pressure on the electronic, mechanical, and structural properties of PrMnO3 through density functional theory analysis 通过密度泛函理论分析解读压力对 PrMnO3 电子、机械和结构特性的影响

IF 1.6 4区化学

Transition Metal Chemistry Pub Date : 2023-09-15 DOI: 10.1007/s11243-023-00540-z

Saad Tariq, A. A. Mubarak, Ayash O. Alrashdi, Farida Hamioud, Bushra Kanwal

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Allen J. Bard, Larry. R. Faulkner, Henry S. White: Electrochemical Methods: Fundamentals and Applications, 3rd edition, Wiley 艾伦·J·巴德，拉里。R.福克纳，亨利S.怀特：《电化学方法：基础与应用》，第3版，威利出版社

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2023-09-13 DOI: 10.1007/s11243-023-00555-6

Estelle Lebègue

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Selectivity through an asymmetric pathway in the degradation of non-steroidal anti-inflammatory drugs (NSAIDs) using mixed-ligand cobalt(II) complexes: experimental and theoretical insights 使用混合配体钴（II）复合物通过不对称途径降解非甾体抗炎药（NSAIDs）的选择性：实验和理论见解

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2023-09-13 DOI: 10.1007/s11243-023-00553-8

Susana Dianey Gallegos Cerda, Carlos Alberto Huerta Aguilar, Jashanpreet Singh, Miguel Morales Rodríguez, José Antonio Juanico Loran, Jayanthi Narayanan

{"title":"Selectivity through an asymmetric pathway in the degradation of non-steroidal anti-inflammatory drugs (NSAIDs) using mixed-ligand cobalt(II) complexes: experimental and theoretical insights","authors":"Susana Dianey Gallegos Cerda, Carlos Alberto Huerta Aguilar, Jashanpreet Singh, Miguel Morales Rodríguez, José Antonio Juanico Loran, Jayanthi Narayanan","doi":"10.1007/s11243-023-00553-8","DOIUrl":"10.1007/s11243-023-00553-8","url":null,"abstract":"<div>Understanding the asymmetric catalytic mechanism involving organometallic species provides exceptional insight into the strategies for the degradation of emerging organic contaminants. The present work demonstrates such insights on the oxidation of commonly used non-steroidal anti-inflammatory drugs (NSAIDs) such as diclofenac, paracetamol, ibuprofen, and aspirin using optically active novel Schiff base Co(II) complexes derived from salicylaldehyde containing five different amino acids (L-methionine, L-leucine, L-asparagine, L-tryptophan, and L-glutamic acid). Among the studied chiral catalysts, asymmetric degradation in the presence of a Co(II) complex containing glutamic acid mixed ligand showed an elevated rate of oxidation of non-amine NSAIDs such as ibuprofen (3.86 × 10–2 s−1) and aspirin (3.70 × 10–3 s−1) using H2O2 oxidant under visible light conditions at neutral pH. The formation of chiral intermediate species in both drugs has been detected and characterized by FTIR and Raman analysis. On the other hand, NSAIDs containing secondary amine groups (–NH–), such as diclofenac and paracetamol, generate effective coordination between the complex catalyst and the nitrogen atom. This explains the high activity of the Co(II) complex with glutamic acid mixed salicylaldehyde with 100% selectivity in the degradation of ibuprofen and aspirin. The thermodynamical feasibility of the proposed degradation route for ibuprofen and aspirin was analyzed with theoretically calculated total energy values of all the intermediates formed in each step of the proposed mechanism.<h3>Graphical abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909593","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 hollow metallic copper particles using a standard electrode potential difference 利用标准电极电位差制备空心金属铜颗粒

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Transition Metal Chemistry Pub Date : 2023-09-08 DOI: 10.1007/s11243-023-00554-7

Reo Kasori, N. Yamauchi, Shohei Tada, Y. Kobayashi

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Fabrication of hollow metallic copper particles using a standard electrode potential difference 使用标准电极电位差制备空心金属铜颗粒

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2023-09-08 DOI: 10.1007/s11243-023-00554-7

Reo Kasori, Noriko Yamauchi, Shohei Tada, Yoshio Kobayashi

{"title":"Fabrication of hollow metallic copper particles using a standard electrode potential difference","authors":"Reo Kasori, Noriko Yamauchi, Shohei Tada, Yoshio Kobayashi","doi":"10.1007/s11243-023-00554-7","DOIUrl":"10.1007/s11243-023-00554-7","url":null,"abstract":"<div>Hollow metallic particles have a lower density than their bulk counterparts with an equivalent apparent volume; therefore, they are expected to be applied in fields requiring low density and large surface area materials. This study proposes a method for synthesizing hollow metallic Cu particles in an aqueous solution. An aqueous suspension of hollow metallic Cu particles was prepared by placing metallic Zn particles in an aqueous Cu acetate solution. Based on the displacement plating related to the standard electrode potential difference between Cu and Zn, Cu2+ ions were reduced to metallic Cu by receiving electrons from metallic Zn, while metallic Zn dissolved into the aqueous solution. Consequently, metallic Cu with a shell-like shape formed near the surface of the original metallic Zn particles before Zn dissolution, yielding hollow metallic Cu particles. Thus, this study revealed that the Cu acetate concentration should be appropriately controlled to fabricate hollow particles. Moreover, the developed method can easily fabricate hollow metallic particles in one step without adding external reducing agents.</div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909483","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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Synthesis and structural elucidation of 1,2-naphthoquinone derivatives, Schiff base complexes and ternary complexes with 8-hydroxyquinoline: comparative studies of their antimicrobial, anti-inflammatory and anti-diabetic activities 1,2-萘醌衍生物、希夫碱络合物以及与 8-羟基喹啉的三元络合物的合成与结构解析：其抗菌、抗炎和抗糖尿病活性的比较研究

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2023-09-02 DOI: 10.1007/s11243-023-00551-w

Seema, Shobhana Sharma, Poonam Yadav, Suman Kumari, Mamta Ranka

{"title":"Synthesis and structural elucidation of 1,2-naphthoquinone derivatives, Schiff base complexes and ternary complexes with 8-hydroxyquinoline: comparative studies of their antimicrobial, anti-inflammatory and anti-diabetic activities","authors":"Seema, Shobhana Sharma, Poonam Yadav, Suman Kumari, Mamta Ranka","doi":"10.1007/s11243-023-00551-w","DOIUrl":"10.1007/s11243-023-00551-w","url":null,"abstract":"<div>Herein, a new derivative of 1,2-naphthoquinone with semicarbazide and its Schiff base complexes and ternary complexes have been synthesized with some transition metals such as Ni(II), Co(II) and Zn(II) by using the conventional reflux method and 8-hydroxyquinoline (8-HQ) as a secondary ligand for ternary complexes. All the compounds were characterized using elemental analysis, molar conductance, melting point, Powder XRD, magnetic moment measurement and various spectral techniques such as FTIR, 13C NMR, 1H NMR, and Mass Spectra. The specific peak of the enolic proton in 1H NMR spectra of the tridentate ligand (L) explained the amido-iminol tautomerism in semicarbazone. In addition, powder XRD analysis and TGA confirmed the crystalline nature and the thermal study of metal chelates, respectively. In vitro, all the compounds were screened for antimicrobial (against bacterial strains: S. aureus and E. coli; Fungal strain: A. niger), anti-diabetic and anti-inflammatory activity with their obtained IC50 values and compared with Acarbose and Aspirin standard drugs. Bioactivities of azomethine containing free ligand (L), their Schiff base complexes and ternary metal chelates were compared to each other. Free Schiff base (L) was found most potent for all selective bioactivities compared to their all-metal complexes, except Ni (II) Schiff base complex showed excellent activity against C. albicans.</div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909096","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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Facile synthesis of paramagnetic Co(II)-hexaborate(2-)-based semi-organic complexes: a combined investigation on X-ray crystal structure, Hirshfeld surfaces analysis, optical and magnetic properties 顺磁性Co(II)-六硼酸钴(2-)基半有机配合物的简易合成:x射线晶体结构、Hirshfeld表面分析、光学和磁性能的综合研究

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2023-08-16 DOI: 10.1007/s11243-023-00549-4

Ibrahim Karoui, Ahlem Maalaoui, S. Duval, M. Rzaigui, S. Akriche

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Synthesis, spectroscopic characterization, and photophysical properties of new p-anisolylthiol-functionalized platinum(II) bis(alkenylarylalkynyl) complexes 新型对苯硫基官能化铂（II）双（烯基芳基）配合物的合成、光谱表征和光物理性质

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2023-08-16 DOI: 10.1007/s11243-023-00550-x

Md. Mostafizur Rahman, Tanjila Islam, Md. Amran-Al-Taz Khan, Muhammad Younus, Dababrata Paul, Md. Sajib Joardar, Akiya Ogawa

{"title":"Synthesis, spectroscopic characterization, and photophysical properties of new p-anisolylthiol-functionalized platinum(II) bis(alkenylarylalkynyl) complexes","authors":"Md. Mostafizur Rahman, Tanjila Islam, Md. Amran-Al-Taz Khan, Muhammad Younus, Dababrata Paul, Md. Sajib Joardar, Akiya Ogawa","doi":"10.1007/s11243-023-00550-x","DOIUrl":"10.1007/s11243-023-00550-x","url":null,"abstract":"<div>A series of organic sulfur-functionalized trans-platinum(II) bis(alkenylarylalkynyl) complexes, having one anisolylthio group with general formula trans-[(PEt3)2Pt{C≡C–Ar–CH=CH(SC6H4–OCH3)}2], (2a-2d), (Ar = phenylene/biphenylene/2,5-dimethylphenylene/2,5-dimethoxyphenylene) was synthesized in excellent yields. All the new platinum(II) complexes have been fully characterized by physico-chemical and spectroscopic methods. Photophysical properties of the complexes were studied by absorption and emission spectroscopy. The lowest energy absorption band for the complexes, in the UV/Vis spectra, in THF solution, at room temperature, 2a-2d was observed in the range 355–391 nm, which depend on the spacers in the acetylide ligand e.g., the absorption of 2d is red shifted to 391 nm for the donor (OCH3) substituents in phenyl spacer. These absorptions originated predominantly from π–π*orbitals of acetylide ligand with significant contribution from the platinum dπ orbital as evident from the HOMO and LUMO, obtained from TD-DFT calculations. Fluorescence was observed in all complexes at room temperature in the range 400–428 nm with PLQY of 2–5%. At 77 k, the complexes 2a-2b only exhibited phosphorescence in the range 579–585 nm, but there is no phosphorescence at ambient temperature.<h3>Graphical abstract</h3>\u0000 <div><figure><div><div><picture><img></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909831","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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Facile synthesis of paramagnetic Co(II)-hexaborate(2-)-based semi-organic complexes: a combined investigation on X-ray crystal structure, Hirshfeld surfaces analysis, optical and magnetic properties 顺磁性钴（II）-六硼酸酯（2-）基半有机配合物的简易合成：X射线晶体结构、Hirshfeld表面分析、光学和磁学性质的综合研究

IF 1.7 4区化学

Transition Metal Chemistry Pub Date : 2023-08-16 DOI: 10.1007/s11243-023-00549-4

Ibrahim Karoui, Ahlem Maalaoui, Sylvain Duval, Mohamed Rzaigui, Samah Akriche

{"title":"Facile synthesis of paramagnetic Co(II)-hexaborate(2-)-based semi-organic complexes: a combined investigation on X-ray crystal structure, Hirshfeld surfaces analysis, optical and magnetic properties","authors":"Ibrahim Karoui, Ahlem Maalaoui, Sylvain Duval, Mohamed Rzaigui, Samah Akriche","doi":"10.1007/s11243-023-00549-4","DOIUrl":"10.1007/s11243-023-00549-4","url":null,"abstract":"<div>Two new paramagnetic hybrid cobalt(II)-hexaborate(2-)-based semi-organic complexes: (2A3MP)2[Co{κ3O–B6O7(OH)6}2].2H2O (1) and (2A4MP)2[Co{κ3O–B6O7(OH)6}2].2H2O (2) (2A3MP = 2-amino-3-methylpyridinium, 2A4MP = 2-amino-4-methylpyridinium) have been obtained and characterized by X-ray diffraction, FT-IR, TG–DTA, optical and magnetic measurements. X-ray diffraction revealed two isostructural compounds based on Co(II) complexes of bis(κ3O-donor hexaborate(2-)) ligands, [Co{κ3O–B6O7(OH)6}2]2−, differing only in the organic counter cation. The hydrated oxidopolyborate anions are extensively H-bounded to form 3D-porous supramolecular anionic frameworks. In both 1 and 2 isostructures, 2A3MP and 2A4MP cations are present in the created voids of the inorganic frameworks through a set of H-bonds with 58.5 and 60.5% H…O/O…H intercontact contributions, respectively, for 1 and 2 as confirmed by Hirshfeld surfaces analysis. The optical band gap of Co(II) complexes ranges between 2.72 and 2.82 eV. Both compounds exhibited well-resolved paramagnetic properties with magnetic susceptibility values ranging between 0.9552 cm3 mol−1 (at 2 K) and 0.0088 cm3 mol−1 (at 300 K), typical of octahedral Co(II) complexes.</div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909829","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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