☆ 4.5 Article

Synthesis and Characterization of a Manganese(III) Complex with a Tetradentate N-Heterocyclic Carbene Ligand

ORGANOMETALLICS (2009)

期刊

ORGANOMETALLICS

卷 28, 期 7, 页码 2342-2344

出版社

AMER CHEMICAL SOC

DOI: 10.1021/om900007b

关键词

-

类别

Chemistry, Inorganic & Nuclear Chemistry, Organic

向作者/读者索取更多资源

Protocol

Reagent

摘要

An imidazolium salt, containing two atyloxy groups, was prepared as a precursor for the tetradentate dicarbene ligand. The complexation with Mn(OAc)(2) gave an air-stable Mn(III) N-heterocyclic carbene complex in moderate yield. The crystal structure of the complex shows a distorted-square-pyramidal structure, in which two carbene carbon atoms and two aryloxy oxygen atoms of the tetradentate carbene ligand occupied the basal plane.

作者

我是这篇论文的作者

点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5

评分不足

次要评分

新颖性

-

重要性

-

科学严谨性

-

评价这篇论文

推荐

Article Chemistry, Multidisciplinary

Bis(N-Heterocyclic Carbene) Manganese(I) Complexes: Efficient and Simple Hydrogenation Catalysts

Niklas F. Both, Anke Spannenberg, Haijun Jiao, Kathrin Junge, Matthias Beller

Summary: The use of bis(NHC) manganese(I) complexes 3 as catalysts for the hydrogenation of esters was investigated. Various aromatic and aliphatic esters were successfully hydrogenated at mild temperatures and low catalyst loadings using complexes 3 with KHBEt3 as additive, highlighting the efficiency of the novel catalytic system. Additionally, the versatility of the developed catalytic system was demonstrated by the hydrogenation of other substrate classes like ketones, nitriles, N-heteroarenes, and alkenes.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

添加到收藏夹

Review Chemistry, Inorganic & Nuclear

Photofunctionality of iron(III) N-heterocyclic carbenes and related d5 transition metal complexes

Pavel Chabera, Linnea Lindh, Nils W. Rosemann, Om Prakash, Jens Uhlig, Arkady Yartsev, Kenneth Warnmark, Villy Sundstrom, Petter Persson

Summary: Recent investigations have shown promising photophysical and photochemical properties of iron(III) NHC complexes, including nanosecond photoluminescence and capabilities to drive both photo-oxidation and photo-reduction reactions. These results are important for understanding the unorthodox photophysical and photochemical properties associated with this open-shell electronic configuration.

COORDINATION CHEMISTRY REVIEWS (2021)

添加到收藏夹

Article Biochemical Research Methods

Synthesis of N-heterocyclic carbene gold(I) complexes

Fady Nahra, Nikolaos Tzouras, Alba Collado, Steven P. Nolan

Summary: N-heterocyclic carbene gold(I) chloride and hydroxide complexes are commonly used as synthetic reagents and efficient catalysts. This study describes a straightforward and practical method for synthesizing mononuclear gold complexes with high yields, as well as the synthesis of a mononuclear gold(I) hydroxide complex and an improved synthesis method for a dinuclear gold(I) hydroxide complex. This methodology offers advantages such as the use of sustainable reaction solvents and commercially available starting materials.

NATURE PROTOCOLS (2021)

添加到收藏夹

Article Chemistry, Inorganic & Nuclear

Heteroleptic and Homoleptic Iron(III) Complexes with a Tris(N-Heterocyclic Carbene) Borate Ligand: Synthesis, Characterization, and Catalytic Application

Yuna Sato, Masaya Okamura, Shiro Hikichi

Summary: Heteroleptic and homoleptic iron(III) complexes supported by a tris(N-heterocyclic carbene) borate ligand have been prepared and characterized. The strong electron-donating character of the tris (carbene) donor was revealed through various measurements and calculations. The catalytic activity of each complex in cyclohexane oxidation was evaluated and both complexes showed high catalytic activity and selectivity, with the homoleptic complex exhibiting more metal-based reactions.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Synthesis, characterization and reactivity of a neutral antimony(III) complex

Xiong Sun, Congqing Zhu

Summary: Pincer complexes, with antimony as a central donor atom, have been explored in recent years. While phenylenediamine derived PXP ligands show diverse reactivity, analogues based on antimony are less commonly reported. The new PSbP complex reported in this study will expand the family of phenylenediamine derived pincer complexes.

CHINESE CHEMICAL LETTERS (2021)

添加到收藏夹

Article Biochemistry & Molecular Biology

An N-heterocyclic carbene iridium(III) complex as a potent anti-cancer stem cell therapeutic

Conor McCartin, Eric Mathieu, Monique Dontenwill, Christel Herold-Mende, Ahmed Idbaih, Anna Bonfiglio, Matteo Mauro, Sylvie Fournel, Antoine Kichler

Summary: Cancer stem cells (CSCs) are highly resistant to conventional anti-cancer treatments due to their unique characteristics, but their high dependence on mitochondria can be targeted for new therapeutic agents. This study found that a phosphorescent compound showed higher activity against CSCs compared to non-CSCs, with mitochondrial localization and superoxide production confirmed. The findings provide important insights into the potential of this compound for anti-CSC therapeutics.

CHEMICO-BIOLOGICAL INTERACTIONS (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Electrochemical Synthesis of Gold-N-Heterocyclic Carbene Complexes

Thomas P. Nicholls, Zhongfan Jia, Justin M. Chalker

Summary: An electrochemical synthesis method has been developed for the production of gold(I)-N-heterocyclic carbene (Au-NHC) complexes. This method allows for the production of complexes without any by-products, which can be directly used as catalysts without purification.

CHEMISTRY-A EUROPEAN JOURNAL (2023)

添加到收藏夹

Article Chemistry, Organic

N-Heterocyclic Carbene-Pyridine Manganese Complex/Tetrabutylammonium Iodide Catalyzed Synthesis of Cyclic Carbonate from CO2 and Epoxide

Guijie Liu, Zhengqiang Fu, Fei Chen, Caixia Xu, Min Li, Ning Liu

Summary: The bidentate N-heterocyclic carbene (NHC)-pyridine nitrogen manganese complex was utilized as a catalyst for the coupling reaction between epoxides and CO2. The binary system of the manganese complex Mn-2 and tetrabutylammonium iodide (TBAI) showed high activity in the synthesis of cyclic carbonates. This binary catalytic system is versatile for various substrates, including both terminal and sterically hindered internal epoxides. A potential catalytic pathway was proposed based on analysis using UV-vis, FT-IR, and HRMS techniques.

CHINESE JOURNAL OF ORGANIC CHEMISTRY (2023)

添加到收藏夹

Article Engineering, Electrical & Electronic

Synthesis and Characterization of Blue Phosphorescent NHC-Ir(III) Complexes with Annulated Heterocyclic 1,2,4-Triazolophenanthridine Derivatives for Highly Efficient PhOLEDs

Bo-Sun Yun, So-Yoen Kim, Jin-Hyoung Kim, Sunghan Choi, Sanghun Lee, Ho-Jin Son, Sang Ook Kang

Summary: Efficient tris-bidentate Ir(III) phosphorescent dopants were prepared using modified 1,2,4-triazolo[4,3-f]phenanthridine (tzp) ligands with aryl substituents. The prepared Ir(III) complexes exhibited highly efficient emissions in the solid state and showed varying excited-state properties based on the planarity and pi-conjugation of the ligands. One specific complex with abnormal ligand ligation displayed the most efficient emission properties in both solution and solid media. Devices fabricated with this complex as the emitter showed superior electroluminescence efficiencies and color coordinates.

ACS APPLIED ELECTRONIC MATERIALS (2022)

添加到收藏夹

Article Chemistry, Inorganic & Nuclear

Synthesis, Structural Characterization and Antiproliferative Activity of Gold(I) and Gold(III) Complexes Bearing Thioether-Functionalized N-Heterocyclic Carbenes

Riccardo De Marco, Marco Dal Grande, Marco Baron, Laura Orian, Claudia Graiff, Thierry Achard, Stephane Bellemin-Laponnaz, Alexander Pothig, Cristina Tubaro

Summary: A series of gold complexes with N-heterocyclic carbene ligands functionalized with a pendant thioether group were synthesized and characterized, showing moderate in vitro cytotoxicity towards breast cancer cells MCF7. The experimental aspects were rationalized through relativistic DFT calculations.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

A Mononuclear Iron Thiolate Complex with N-Heterocyclic Carbene Ligation

Shangzhao Li, Zhenwu Ouyang, Junjie Zou, Dongyang Wang, Bin Xu, Liang Deng

Summary: The relevance of low-valent iron complexes bearing sulfur-containing ligands with the reactive iron intermediates in enzymatic dinitrogen fixation has stimulated great synthetic efforts. In this study, a mononuclear iron(I) complex with a thiolate ligand was synthesized and its catalytic performance in dinitrogen silylation reaction was investigated. The results showed that the iron complex has low-spin iron(I) nature and exhibits excellent catalytic activity, possibly due to the long lifetime of the catalytically active intermediate rendered by the thiolate ligand.

ACTA CHIMICA SINICA (2022)

添加到收藏夹

Article Chemistry, Organic

N-Indole-substituted N-heterocyclic carbene palladium precatalysts: Synthesis, characterization and catalytic cross-couplings

Yingxin Ye, Zhongxian Liu, Yazhou Wang, Yin Zhang, Fan Yin, Qi He, Jiahao Peng, Kai Tan, Yuehai Shen

Summary: PEPPSI-type Pd complexes with NHC ligands containing N-(4-indolyl) side chains were synthesized and evaluated for their catalytic activity in three reactions. The results showed that complex 8g, with an unsymmetric N-(3-isopropyl-1,5,7-trimethyl-2-phenylindol-4-yl) NHC, exhibited the highest activity and outperformed Pd-PEPPSI-IPr. This study demonstrates the promising platform of N-(4-indolyl) side chains for the development of synthetically useful NHC ligands.

TETRAHEDRON LETTERS (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Liquid Dynamics Determine Transition Metal-N-Heterocyclic Carbene Complex Formation

Paul Zaby, Jan Blasius, Anna K. Mueller, Steven P. Nolan, Oldamur Holloczki

Summary: The formation mechanism of metal-N-heterocyclic carbene (NHC) complexes from imidazolium salts in the presence of weak bases was investigated through theoretical methods. Quantum chemical calculations revealed that both sodium acetate and trimethylamine facilitate complex formation. Molecular dynamics simulations showed that the ionic nature of the [AuCl2](-) and imidazolium ions, as well as the sodium acetate base, keep these species associated in the reaction mixture through ion pairing. The neutral amine, however, remains mostly separated from the other reaction partners, making it a significantly less effective base.

CHEMISTRY-A EUROPEAN JOURNAL (2023)

添加到收藏夹

Article Chemistry, Physical

Gold(III) assisted C-N bond dissociation; Synthesis, structure, photoluminescence, and pharmacokinetic studies of 1,10/- phenanthroline-gold(III)-N-heterocyclic carbene

Priyanka Sahu, Atala B. Jena, Sahadev Barik, Hemanta K. Kisan, Anvarhusein A. Isab, Jagneshwar Dandapat, Joydev Dinda

Summary: In this article, the synthesis, structure, luminescence, electrochemical properties, and intramolecular Au center dot center dot center dot H -C/N(sp2/sp3) hydrogen-bonding interactions of a gold(III)-N-heterocyclic carbene complex fastened with 1,10-phenanthroline (phen) are presented. The novel complex [Au(phen)(1)Cl][PF6]2, (2), was successfully synthesized using a transmetallation method starting from the proligand 1-methyl-3-((1-methyl-1H-benzo[d]imidazol-2-yl)methyl)-1H-imidazol-3-iumhexafluorophosphate (1.HPF6). The characterization of complex 2 was done using various spectroscopic methods and single crystal X-ray diffraction analysis. The optoelectronic properties of complex 2 were compared with its precursor [Au(phen)Cl2][PF6], and its electrochemical behavior and affinity towards different proteins were also investigated.

JOURNAL OF MOLECULAR STRUCTURE (2023)

添加到收藏夹

Review Chemistry, Inorganic & Nuclear

N-Heterocyclic and Mesoionic Carbenes of Manganese and Rhenium in Catalysis

Sofia Friaes, Sara Realista, Henrique Mourao, Beatriz Royo

Summary: This article covers the recent progress in the use of N-heterocyclic carbenes (NHCs) in manganese and rhenium catalysis, with a focus on hydrosilylation, hydrogenation, borrowing hydrogen processes, as well as the electrochemical and photochemical reduction of CO2.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (2022)

添加到收藏夹

暂无数据

暂无数据

© Peeref 2019-2024. All rights reserved.