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Author : Martin H. G. Prechtl
Publisher :
ISBN 13 : 9783865532299
Total Pages : 152 pages
Book Rating : 4.5/5 (322 download)
Download or read book Novel Ruthenium Dihydrogen Complexes and Their Application in Catalysis written by Martin H. G. Prechtl and published by . This book was released on 2007 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maurizio Peruzzini
Publisher : Elsevier
ISBN 13 : 0080540333
Total Pages : 577 pages
Book Rating : 4.0/5 (85 download)
Download or read book Recent Advances in Hydride Chemistry written by Maurizio Peruzzini and published by Elsevier. This book was released on 2002-01-30 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been conceived to collect the most important recent advances in all areas of hydride chemistry research, including chemical reactivity, instrumental investigation, theory, and applications in the areas of catalysis, biochemistry and materials science. Many of the chapters have been written by the plenary lecturers of the EURO-Hydrides 2000 conference, but other leading scientists in this field have also been invited to contribute. The first part of the book focuses on the chemistry and catalysis of transition metal hydrides. Another block of chapters illustrates the most recent advances in the application of instrumental techniques to the study of the properties and reactivity of hydride compounds. The final part of the book illustrates the relevance of metal-hydrogen bonds in biochemistry and materials science. All of the chapters of this book have been evaluated by independent reviewers.
Author : Andrea Rodríguez Bárzano
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (872 download)
Download or read book Novel Ruthenium Complexes and Their Applications as Catalysts and Anticancer Agents written by Andrea Rodríguez Bárzano and published by . This book was released on 2013 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William P. Griffith
Publisher : Springer Science & Business Media
ISBN 13 : 1402093780
Total Pages : 274 pages
Book Rating : 4.4/5 (2 download)
Download or read book Ruthenium Oxidation Complexes written by William P. Griffith and published by Springer Science & Business Media. This book was released on 2010-11-03 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ruthenium Oxidation Complexes explores ruthenium complexes, particularly those in higher oxidation states, which function as useful and selective organic oxidation catalysts. Particular emphasis is placed on those systems which are of industrial significance. The preparation, properties and applications of the ruthenium complexes are described, followed by a presentation of their oxidative properties and summary of the different mechanisms involved in the organic oxidations (e.g. oxidations of alcohols, alkenes, arenes and alkynes, alkanes, amines, ethers, phopshines and miscellaneous substrates). Moreover, future trends and developments in the area are discussed. This monograph is aimed at inorganic, organic, industrial and catalysis chemists, especially those who wish to carry out specific organic oxidations using catalytic methods.
Author : Janine Jeschke
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (951 download)
Download or read book Novel Ruthenium Complexes and Their Application in Homogeneous Catalysis and Chemical Vapor Deposition written by Janine Jeschke and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sean Clapham
Publisher :
ISBN 13 : 9780494397831
Total Pages : 404 pages
Book Rating : 4.3/5 (978 download)
Download or read book Amido-hydrido Complexes of Ruthenium and Osmium written by Sean Clapham and published by . This book was released on 2008 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new air-sensitive ruthenium and osmium amido-hydrido complexes RuH(NHCMe 2CMe2NH2)(PPh3)2 and OsH(NHCMe 2CMe2NH2)(PPh3)2 have been synthesized and characterized. The hydrogenation of ketones to alcohols using these catalysts was explored. This included exploring the reactivity of these complexes toward hydrogen gas, ketones and alcohols, as well as performing kinetic experiments. The behaviour of the ruthenium and osmium systems were compared and mechanisms were proposed. Density functional calculations were carried out to model the proposed mechanisms and these were compared with experimental results. RuH(NHCMe2CMe2NH2)(PPh 3)2 was reacted with formic acid to generate RuH(OCHO)(NH 2CMe2CMe2NH2)(PPh3) 2, a model compound for the transfer of hydrogen from ruthenium to a ketone. The reactivity of the amido complexes towards weakly acidic compounds, HX, to generate new diamino complexes of the type MHX(NH2CMe 2CMe2NH2)(PPh3)2 (M = Ru or Os, X = H, OPh, NCCHCN, CH(COOMe)2, CCPh, OPPh2, OP(OEt)2, p-SC6H4OMe) was explored. Useful correlations were drawn relating the effect that the ligand trans to hydride has on the NMR and infrared spectra of these compounds. The complex RuH(OPh)(NH 2CMe2CMe2NH2)(PPh3) 2 hydrogen bonds with an equivalent of phenol to generate RuH(OPh···HOPh)(NH 2CMe2CMe2NH2)(PPh3) 2, which contains an interesting 6-membered ring as a result. This structure is similar to the proposed transition state for the alcohol-assisted splitting of dihydrogen by OsH(NHCMe2CMe2NH2)(PPh 3)2. The novel ruthenium complexes RuHX(1,2-NH2C 6H10NH2)(PPh3)2 (X = OPh, NCCHCN, CCPh, OPPh2, OP(OEt)2, p-SC6H 4OMe) were generated from the reaction of RuHCl(1,2-NH2C 6H10NH2)(PPh3)2 with HX and base. The complexes RuH(CCPh)(diamine)(PPh3)2 (diamine = NH2CMe2CMe2NH2 or 1,2-NH 2C6H10NH2) catalyze the hydrogenation of acetophenone to 1-phenylethanol, but less efficiently than the amido complexes. The complexes MH(CH(COOMe)2)(NH2CMe2CMe 2NH2)(PPh3)2 (M = Ru or Os) and the amido complexes also catalyze the Michael addition of dimethylmalonate to 2-cyclohexen-1-one. The reaction of RuH(NCCHCN)(NH2CMe2CMe 2NH2)(PPh3)2 with 2-cyclohexen-1-one leads to the formation of the trapped Michael adduct RuH(NCC(C6H 9O)CN)(NH2CMe2CMe2NH2)(PPh 3)2. The structure of this complex was used in proposing a mechanism for Michael addition reactions catalyzed by the amido complexes. The relative reactivity and strength of the osmium and ruthenium amido bonds were investigated through a series of competition experiments where HX (X = Cl, OPh, NCCHCN, p-SC6H4OMe) was transferred from OsHX(NH2CMe2CMe2NH2)(PPh 3)2 to RuH(NHCMe2CMe2NH2)(PPh 3)2 leading to RuHX(NH2CMe2CMe 2NH2)(PPh3)2 and OsH(NHCMe2CMe 2NH2)(PPh3)2.
Author : David Bo Watson
Publisher :
ISBN 13 : 9781617615504
Total Pages : 0 pages
Book Rating : 4.6/5 (155 download)
Download or read book Ruthenium written by David Bo Watson and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ruthenium compounds constitute a versatile class of catalysts for important synthetic transformations in organic chemistry. The ability of ruthenium to access different oxidation states and to accommodate a large variety of ligands in various coordination geometries gives rise to numerous different metal complexes. These characteristics have led to the use of a large variety of ruthenium complexes in diverse types of research areas such as artificial photosynthesis, photomolecular devices, studies on biological macromolecules, catalytic oxidation of water and organic substrates, and organic synthesis. This book presents current research from across the globe in the study of ruthenium across a broad spectrum of topics.
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Author : Tianshu Li
Publisher : Library and Archives Canada = Bibliothèque et Archives Canada
ISBN 13 : 9780494027134
Total Pages : 380 pages
Book Rating : 4.0/5 (271 download)
Download or read book The Heterolytic Splitting of Dihydrogen [microform] : Ruthenium Hydrogenation Catalysts and an Acidity Scale written by Tianshu Li and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Equilibrium constants KDM for reactions between acids and bases of phosphorus-containing compounds including phosphonium salts, iron hydrides and ruthenium dihydrogen complexes in CD2Cl 2 (DM) at room temperature are determined by use of 31P and 1H NMR spectroscopy. A continuous scale of pKDM values covering the range 9.7 to -3 is created with acidic compounds [HPR3]BF4 and [FeH(CO)3(PR 3)2]BF4 in CD2Cl2. The crystal structures of [FeH(CO)3(PCy2Ph)2]BF 4 and Fe(CO)3(PCy2Ph)2 are obtained. The new dihydrogen complexes, [Ru(H2)Cl(PPh3)2 (dach)]BF4 (dach = (1R, 2R)-( - )-diaminocyclohexane) and [Ru(H2)Cl{tmeP2(NH)2}]BF4, are prepared and their crystal structures are reported. Their pKDM values are determined to be 8.6 and 6.8, respectively. The heterolytic splitting of dihydrogen in new ruthenium complexes is utilized for the catalytic hydrogenation of the polar bonds in ketones and nitrites. The complex RuHCl{enP2(NH)2} (en = -NHCH2 CH2NH- ) is an active catalyst for nitrile hydrogenation. This catalyst, in combination with Ru(H2)2H2(PCy 3)2, a known catalyst for nitrile hydrogenation, provides very efficient conversion of benzonitrile to benzylamine. The mechanism of the nitrile hydrogenation is proposed. These catalysts are extremely moisture sensitive. The crystal structures of a possible deactivated form of the catalysts, RuH(PhCONH){enP2(NH)2} and RuH(PhCONH){tmeP2(NH) 2}, are reported. The new complex RuH(BH4){enP2(NH) 2} is prepared by RuHCl{enP2(NH)2} and NaBH 4 and its crystal structure was obtained. This is a poor nitrile hydration catalyst. The new tetradentate ligands PPh2C6H4CH=NCMe 2CMe2N=CHC6H4PPh 2 {tmeP2N2} and PPh2C6H 4CH2NHCMe2CMe2NHCH2C 6H4PPh2 {tmeP2(NH)2}, and their ruthenium complexes, trans-RuHCl{tmeP2N 2} and trans-RuHCl{tmeP2(NH)2} (as two isomers), are prepared. The reaction of trans-RuHCl{tmeP 2(NH)2} with KOtBu produces the novel hydridoamido complex RuH{tmeP2NNH}. The reaction of the amido complex with H2 gives, by the heterolytic splitting of dihydrogen, exclusively the dihydridoamine complex trans-Ru(H)2 {tmeP2(NH)2}. The reaction of the amido complex with D2 is also studied. The complex RuH{tmeP2NNH} catalyzes the hydrogenation of acetophenone and a mechanism involving an outer sphere H+/H- transfer to the ketone is proposed. An improved route for the preparation of the phosphine-ketone PPh 2CH2CH2(C=O)Me from PPh2H and CH 2=CH(CO)Me provides an economical and efficient route to the phosphine-hydrazone PPh2CH2CH2(C=N-NH2)Me. The mixture of ruthenium complexes produced from the phosphine-hydrazone catalyzes the hydrogenation of acetophenone to 1-phenylethanol efficiently. The synthesis, structure and preliminary testing of the new precatalyst RuHCl((S, S)-PPM)(PPh3) for ketone hydrogenation are described.
Author : Ajay Kumar Mishra
Publisher :
ISBN 13 : 9789814774390
Total Pages : 386 pages
Book Rating : 4.7/5 (743 download)
Download or read book Ruthenium Chemistry written by Ajay Kumar Mishra and published by . This book was released on 2018-01-17 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will describe Ruthenium complexes as chemotherapeutic agent specifically at tumor site. It has been the most challenging task in the area of cancer therapy. Nanoparticles are now emerging as the most effective alternative to traditional chemotherapeutic approach. Nanoparticles have been shown to be useful in this respect. However, in view of organ system complicacies, instead of using nanoparticles as a delivery tool, it will be more appropriate to synthesize a drug of nanoparticle size that can use blood transport mechanism to reach the tumor site and regress cancer. Due to less toxicity and effective bio-distribution, ruthenium (Ru) complexes are of much current interest. Additionally, lumiscent Ru-complexes can be synthesized in nanoparticle size and can be directly traced at tissue level. The book will contain the synthesis, characterization, and applications of various Ruthenium complexes as chemotherapeutic agents. The book will also cover the introduction to chemotherapy, classification of Ru- complexes with respect to their oxidation states and geometry, Ruthenium complexes of nano size: shape and binding- selectivity, binding of ruthenium complexes with DNA, DNA cleavage studies and cytotoxicity. The present book will be more beneficial to researchers, scientists and biomedical. Current book will empower specially to younger generation to create a new world of ruthenium chemistry in material science as well as in medicines. This book will be also beneficial to national/international research laboratories, and academia with interest in the area of coordination chemistry more especially to the Ruthenium compounds and its applications.
Author : Shun-Ichi Murahashi
Publisher : John Wiley & Sons
ISBN 13 : 3527605797
Total Pages : 398 pages
Book Rating : 4.5/5 (276 download)
Download or read book Ruthenium in Organic Synthesis written by Shun-Ichi Murahashi and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this comprehensive book, one of the leading experts, Shun-Ichi Murahashi, presents all the important facets of modern synthetic chemistry using Ruthenium, ranging from hydrogenation to metathesis. In 14 contributions, written by an international authorship, readers will find all the information they need about this fascinating and extraordinary chemistry. The result is a high quality information source and a indispensable reading for everyone working in organometallic chemistry. From the contents: Introduction (S.-I. Murahashi) Hydrogenation and Transfer Hydrogenation (M. Kitamura and R. Noyori) Oxidations (S.-I. Murahashi and N. Komiya) Carbon-Carbon Bond Formations via Ruthenacycle Intermediates (K. Itoh) Carbon-Carbon Bond Formation via pi-Allylruthenium Intermediates (T. Mitsudo) Olefin Metathesis (R. H. Grubbs) Cyclopropanation (H. Nishiyama) Nucleophilic Addition to Alkynes and Reactions via Vinylidene Intermediates (P. Dixneuf) Reactions via C-H Activation (N. Chatani) Lewis Acid Reactions (E. P. Kundig) Reactions with CO and CO2 (T. Mitsudo) Isomerization of Organic Substrates Catalyzed by Ruthenium Complexes (H. Suzuki) Radical Reactions (H. Nagashima) Bond Cleavage Reactions (S. Komiya)
Author : Barnali Dutta
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (731 download)
Download or read book Novel Ruthenium Complexes with Sterically Demanding Cyclopentadienyl Ligands written by Barnali Dutta and published by . This book was released on 2010 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lydia Vaquer Malia
Publisher :
ISBN 13 : 9788469464410
Total Pages : 228 pages
Book Rating : 4.4/5 (644 download)
Download or read book Mononuclear Ruthenium Complexes and Their Application in Homogenous and Heterogeneous Catalysis written by Lydia Vaquer Malia and published by . This book was released on 2011 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christian Bruneau
Publisher : Springer Science & Business Media
ISBN 13 : 9783540205432
Total Pages : 368 pages
Book Rating : 4.2/5 (54 download)
Download or read book Ruthenium Catalysts and Fine Chemistry written by Christian Bruneau and published by Springer Science & Business Media. This book was released on 2004-06-30 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Author : TINA PUI WAH. FONG
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (978 download)
Download or read book Synthesis and Reactivity of Some Acidic Ruthenium Dihydrogen written by TINA PUI WAH. FONG and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sandra E. Trentowsky
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Synthesis and Investigation of Some Cationic and Neutral Ruthenium Dihydrogen and Hydride Complexes written by Sandra E. Trentowsky and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reversible binding of dihydrogen gas on [Ru([eta]2-H 2)H(dppe)2]+ [X]-, where X- = BPh4, B(Arf)4, BF4, PF6 was investigated using 31P and 13C solid state NMR spectroscopy. X-ray crystal structure analysis of the new species [RuH(dppe)2]+ [BPh4] -, [Ru([eta]2-H2)H(dppe)2] + [B(Arf)4]- and [RuCl(dppe) 2]+ [B(Arf)4]- was carried out. As well a comparison of the structure of [RuH(dppe)2]+ [BPh4]- with that of [Ru([eta]2-H2)H(dppe) 2]+ [BPh4]- showed that minor structural changes occur upon loss of the dihydrogen ligand. The activation of X-H bonds, where X = Si, C, S and O, by reaction with Ru(OTf)(CN)(dppe)2 which contains a highly labile triflate ligand was studied. Many new cationic Ru(II) complexes were prepared and characterized. The X-ray crystal structure of [Ru(CCPh)(CN)(dppe)2] + [OTf]- was determined. Finally, the catalyst precursor RuHCl(PPh3)3 was used to carry out various substitution reactions aimed at determining if the method developed to prepare RuHCl(PPh3)(R-BINAP) could be applied as a general method for the preparation of other complexes containing other chiral and non chiral chelating phosphines. These five coordinate complexes could then be further tested for their ability to act as catalysts in the hydrogenation of ketones and imines.
Author : Ryan R. Ketcham
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (748 download)
Download or read book Development of Novel Electrophilic Ruthenium(II) and Iridium(III) Complexes and Their Applications as Homogeneous Catalysts written by Ryan R. Ketcham and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Samantha D. Drouin
Publisher :
ISBN 13 :
Total Pages : 538 pages
Book Rating : 4.:/5 (61 download)
Download or read book Design and Transformation of Versatile Ruthenium Catalysts written by Samantha D. Drouin and published by . This book was released on 2003 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
