نتایج جستجو برای: ruthenium dioxide

تعداد نتایج: 102809  

2017
Ivan Kajan Teemu Kärkelä Ari Auvinen Christian Ekberg

Ruthenium is a fission product that can be released from the fuel in case of a severe nuclear accident. In this work the impact of the atmosphere composition, including air radiolysis products, on the transport of ruthenium through a primary circuit was examined. Experiments were performed at temperatures 1300, 1500 and 1700 K in a slightly humid air. In the experiments significant effect of ni...

Journal: :Chemical communications 2010
Charles P Casey Jeffrey B Johnson Xiandong Jiao Sharon E Beetner Steven W Singer

The ruthenium hydride of (Ar(4)CpOH)Ru(CO)(2)H exchanges cleanly and rapidly with D(2) at room temperature to generate the ruthenium deuteride. A chain mechanism is proposed to explain the much more rapid exchange of RuH/D(2) than RuCO exchange with (13)CO.

2014
Flávia de Castro Pereira Aliny Pereira de Lima Cesar Augusto Sam Tiago Vilanova-Costa Wanessa Carvalho Pires Alessandra de Santana Braga Barbosa Ribeiro Lucas Carlos Gomes Pereira Luiz Alfredo Pavanin Wagner Batista dos Santos Elisângela de Paula Silveira-Lacerda

Chemotherapy is a common treatment for leukemia. Ruthenium complexes have shown potential utility in chemotherapy and photodynamic therapy. The identification of new chemotherapeutics agents is critical for further progress in the treatment of leukemia. Ruthenium complexes generally have lower toxicities compared to cisplatin attributed to their specific accumulation in cancer tissues. Based on...

2016
Aleksandar Bijelic Sarah Theiner Bernhard K. Keppler Annette Rompel

Ruthenium(III) complexes are promising candidates for anticancer drugs, especially the clinically studied indazolium trans-[tetrachlorobis(1H-indazole)ruthenate(III)] (KP1019) and its analogue sodium trans-[tetrachlorobis(1H-indazole)ruthenate(III)] (NKP-1339). Several studies have emphasized the likely role of human serum proteins in the transportation and accumulation of ruthenium(III) comple...

Journal: :Molecules 2014
Dong Wang Didier Astruc

Magnetically recyclable catalysts with magnetic nanoparticles (MNPs) are becoming a major trend towards sustainable catalysts. In this area, recyclable supported ruthenium complexes and ruthenium nanoparticles occupy a key place and present great advantages compared to classic catalysts. In this micro-review, attention is focused on the fabrication of MNP-supported ruthenium catalysts and their...

2016
Bin Yang Can Zhu Youai Qiu Jan‐E. Bäckvall

An efficient one-pot method for the enzyme- and ruthenium-catalyzed enantioselective transformation of α-allenic alcohols into 2,3-dihydrofurans has been developed. The method involves an enzymatic kinetic resolution and a subsequent ruthenium-catalyzed cycloisomerization, which provides 2,3-dihydrofurans with excellent enantioselectivity (up to >99 % ee). A ruthenium carbene species was propos...

2017
Cynthia Licona Marie-Elodie Spaety Antonelle Capuozzo Moussa Ali Rita Santamaria Olivier Armant Francois Delalande Alain Van Dorsselaer Sarah Cianferani John Spencer Michel Pfeffer Georg Mellitzer Christian Gaiddon

Ruthenium complexes are considered as potential replacements for platinum compounds in oncotherapy. Their clinical development is handicapped by a lack of consensus on their mode of action. In this study, we identify three histones (H3.1, H2A, H2B) as possible targets for an anticancer redox organoruthenium compound (RDC11). Using purified histones, we confirmed an interaction between the ruthe...

Journal: :Chemistry 2007
Atsushi Urakawa Marcella Iannuzzi Jürg Hutter Alfons Baiker

Complete reaction pathways relevant to CO2 hydrogenation by using a homogeneous ruthenium dihydride catalyst ([Ru(dmpe)2H2], dmpe=Me2PCH2CH2PMe2) have been investigated by ab initio metadynamics. This approach has allowed reaction intermediates to be identified and free-energy profiles to be calculated, which provide new insights into the experimentally observed reaction pathway. Our simulation...

Journal: :Faraday discussions 2012
Brian W Cohen Dmitry E Polyansky Patrick Achord Diane Cabelli James T Muckerman Koji Tanaka Randolph P Thummel Ruifa Zong Etsuko Fujita

Two isomers, [Ru(1)]2+ (Ru = Ru(bpy)2, bpy = 2,2'-bipyridine, 1 = 2-(pyrid-2'-yl)-1-azaacridine) and [Ru(2)]2+ (2 = 3-(pyrid-2'-yl)-4-azaacridine), are bioinspired model compounds containing the nicotinamide functionality and can serve as precursors for the photogeneration of C-H hydrides for studying reactions pertinent to the photochemical reduction of metal-C1 complexes and/or carbon dioxide...

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