نتایج جستجو برای: organometallic compound

تعداد نتایج: 131105  

Journal: :EcoMat 2022

Abstract Although transition metal phosphide electrocatalysts display unique electronic structure that serves as functional centers for hydrogen evolution reaction, the synthesis of this class materials oxygen remains a challenge due to complex multielectron transfer pathways and sluggish reaction kinetics. This study details an in‐situ modification transformation cyanide‐bridged nickel‐iron (C...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم پایه 1391

one of the applications of nanotechnology is use of carbon nanotubes for the targeted delivery of drug molecules. to demonstrate the physical and chemical properties of biomolecules and identify new material of drug properties, the interaction of carbon nanotubes (cnts) with biomolecules is a subject of many investigations. cnts is a synthetic compound with extraordinary mechanical, thermal, el...

2014
Andrea Weiss Robert H. Berndsen Maxime Dubois Cristina Müller Roger Schibli Arjan W. Griffioen Paul J. Dyson Patrycja Nowak-Sliwinska

Based on the clinical success of platinum-based anti-cancer drugs such as cisplatin, carboplatin and oxaliplatin, a variety of other metal-based anti-cancer compounds are being investigated. In particular, a number of ruthenium-based compounds have been identified which exhibit unique biochemical properties and reduced toxicity profiles compared to the clinically used platinum-based drugs. We h...

Journal: :Anais da Academia Brasileira de Ciencias 2002
Francisco C Pereira Nelson R Stradiotto Maria Valnice B Zanoni

Miconazole is reduced at mercury electrode above pH 6 involving organometallic compound formation, responsible for an anomalous polarographic behavior. The electrodic process presents a large contribution of the adsorption effects. The drug can be determined by cathodic stripping voltammetry from 8.0 x 10(-8) to 1, 5 x 10(-6) molL-1 in Britton-Robinson buffer pH 8.0, when pre-accumulated for 30...

2015
Dragoş-Adrian Roşca Joseph A. Wright Manfred Bochmann

Gold, the archetypal "noble metal", used to be considered of little interest in catalysis. It is now clear that this was a misconception, and a multitude of gold-catalysed transformations has been reported. However, one consequence of the long-held view of gold as inert metal is that its organometallic chemistry contains many "unknowns", and catalytic cycles devised to explain gold's reactivity...

Journal: :Inorganic chemistry 2007
Anne Poduska Roald Hoffmann

In 2001, Bridgeman et al. synthesized a rare species having a T-shaped phosphorus atom centering an organometallic cluster, [{Cp(OC)2Mo}2PMn(CO)4]. Our DFT and extended Hückel electronic structure calculations indicate that the T-shaped geometry results from an unusual Mo-Mn-Mo three-center, two-electron bond that "ties" back the two-center, two-electron Mo-P bonds. Additional stabilization of ...

2015
Lihua Lu Li-Juan Liu Wei-chieh Chao Hai-Jing Zhong Modi Wang Xiu-Ping Chen Jin-Jian Lu Ruei-nian Li Dik-Lung Ma Chung-Hang Leung

Group 9 transition metal complexes have been widely explored as therapeutic agents due to their unique geometry, their propensity to undergo ligand exchanges with biomolecules and their diverse steric and electronic properties. These metal complexes can offer distinct modes of action in living organisms compared to carbon-based molecules. In this study, we investigated the antimicrobial and ant...

Journal: :Angewandte Chemie 2014
Dik-Lung Ma Li-Juan Liu Ka-Ho Leung Yen-Ting Chen Hai-Jing Zhong Daniel Shiu-Hin Chan Hui-Min David Wang Chung-Hang Leung

Kinetically inert metal complexes have arisen as promising alternatives to existing platinum and ruthenium chemotherapeutics. Reported herein, to our knowledge, is the first example of a substitutionally inert, Group 9 organometallic compound as a direct inhibitor of signal transducer and activator of transcription 3 (STAT3) dimerization. From a series of cyclometalated rhodium(III) and iridium...

Journal: :Angewandte Chemie 2016
Yingying Mi Wen Liu Ke R Yang Jianbing Jiang Qi Fan Zhe Weng Yiren Zhong Zishan Wu Gary W Brudvig Victor S Batista Henghui Zhou Hailiang Wang

Confining lithium polysulfide intermediates is one of the most effective ways to alleviate the capacity fade of sulfur-cathode materials in lithium-sulfur (Li-S) batteries. To develop long-cycle Li-S batteries, there is an urgent need for material structures with effective polysulfide binding capability and well-defined surface sites; thereby improving cycling stability and allowing study of mo...

Journal: :Dalton transactions 2016
Jing-Jing Zhang Julienne K Muenzner Mohamed A Abu El Maaty Bianka Karge Rainer Schobert Stefan Wölfl Ingo Ott

A rhodium(i) and a ruthenium(ii) complex with a caffeine derived N-heterocyclic carbene (NHC) ligand were biologically investigated as organometallic conjugates consisting of a metal center and a naturally occurring moiety. While the ruthenium(ii) complex was largely inactive, the rhodium(i) NHC complex displayed selective cytotoxicity and significant anti-metastatic and in vivo anti-vascular a...

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