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Synthesis And Characterization Of Rhenium Complexes For Use In Catalytic Oxidation Reduction And Carbonylation Reactions
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Book Synopsis Synthesis and Characterization of Rhenium Complexes for Use in Catalytic Oxidation, Reduction, and Carbonylation Reactions by : Jessica Lee Smeltz
Download or read book Synthesis and Characterization of Rhenium Complexes for Use in Catalytic Oxidation, Reduction, and Carbonylation Reactions written by Jessica Lee Smeltz and published by . This book was released on 2013 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization and Reactivity of Rhenium(III) Complexes for Catalytic, Stoichiometric and Insertion Reactions by : Damaris Esther Pérez
Download or read book Synthesis, Characterization and Reactivity of Rhenium(III) Complexes for Catalytic, Stoichiometric and Insertion Reactions written by Damaris Esther Pérez and published by . This book was released on 2018 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Rhenium Carbonyl Complexes Obtained by Ligand Exchange Reactions by : Franklin R. Beckles Araque
Download or read book Synthesis and Characterization of Rhenium Carbonyl Complexes Obtained by Ligand Exchange Reactions written by Franklin R. Beckles Araque and published by . This book was released on 2005 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Piet W.N.M. van Leeuwen Publisher :Springer Science & Business Media ISBN 13 :0306469472 Total Pages :291 pages Book Rating :4.3/5 (64 download)
Book Synopsis Rhodium Catalyzed Hydroformylation by : Piet W.N.M. van Leeuwen
Download or read book Rhodium Catalyzed Hydroformylation written by Piet W.N.M. van Leeuwen and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade there have been numerous advances in the area of rhodium-catalyzed hydroformylation, such as highly selective catalysts of industrial importance, new insights into mechanisms of the reaction, very selective asymmetric catalysts, in situ characterization and application to organic synthesis. The views on hydroformylation which still prevail in the current textbooks have become obsolete in several respects. Therefore, it was felt timely to collect these advances in a book. The book contains a series of chapters discussing several rhodium systems arranged according to ligand type, including asymmetric ligands, a chapter on applications in organic chemistry, a chapter on modern processes and separations, and a chapter on catalyst preparation and laboratory techniques. This book concentrates on highlights, rather than a concise review mentioning all articles in just one line. The book aims at an audience of advanced students, experts in the field, and scientists from related fields. The didactic approach also makes it useful as a guide for an advanced course.
Book Synopsis The Chemistry of Rhenium and Tungsten Porphyrin Complexes in Low Oxidation States ; Synthesis and Characterization of Rhenium and Tungsten Porphyrin Dimers Containing Metal-metal Multiple Bonds by : James Michael Garner
Download or read book The Chemistry of Rhenium and Tungsten Porphyrin Complexes in Low Oxidation States ; Synthesis and Characterization of Rhenium and Tungsten Porphyrin Dimers Containing Metal-metal Multiple Bonds written by James Michael Garner and published by . This book was released on 1989 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ruthenium Chemistry by : Ajay Kumar Mishra
Download or read book Ruthenium Chemistry written by Ajay Kumar Mishra and published by CRC Press. 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.
Book Synopsis Synthesis, Characterization, and Reactivity of Technetium and Rhenium Complexes in Intermediate Oxidation States by : Harvey Stewart Trop
Download or read book Synthesis, Characterization, and Reactivity of Technetium and Rhenium Complexes in Intermediate Oxidation States written by Harvey Stewart Trop and published by . This book was released on 1979 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rhenium Complexes Based on Triazolyl Derivatives by : Jin-Hui Wang
Download or read book Rhenium Complexes Based on Triazolyl Derivatives written by Jin-Hui Wang and published by . This book was released on 2017 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhenium complexes play a significant role in nuclear medicine. Rhenium has been widely used as a surrogate of technetium for a long time, and the promising physical features of 186Re and 188Re, make 186/188Re-complexes promising candidates as therapeutic radiopharmaceuticals.Similarly, the interesting photoactive and photoluminescence properties of non-radioactive Re-complexes make them excellent catalysts, luminescent materials and imaging sensors.Thus, in this work, our goal was to (i) develop, using a click chemistry strategy, multidentate ligands for the stabilization of different rhenium cores [Re(CO)3]+ and [ReO]3+ (M = Re or 188Re) as well as the analogous 99mTc-cores in some examples, (ii) assess the potential of the rhenium(technetium) complexes as imaging (natRe or 99mTc) or therapeutic (188Re) agents. To do so, two rhenium(technetium) specific-chelating systems were used: a semi-rigid tripodal system in the second chapter and a pyta moiety in the third chapter, these two chelators being developed previously in our group. Thus, based on a N2O tridentate click ligand, two different studies were carried out in chapter II. In the first one, two synthetic pathways to a range of potentially N3O tetradentate ligands, designed to coordinate rhenium cores as well as their coordination behaviors towards different rhenium cores (oxidation states +I and +V), were investigated. The first radiolabeling results combined with the recent work reported by Dugave and co-workers indicated that this ligand could be a promising 99mTc-chelator for nuclear imaging applications. As perspectives to this work, the extension of the radiolabelling work using the [188ReVO]3+ core should be performed, and the in vitro stability should be tested under physiological conditions in human plasma and by cysteine exchange experiments. The second study was focused on the development of novel hypoxia-selective 99mTc radiopharmaceuticals. Our semi-rigid tripodal click framework was decorated with an appended nitro group (either a nitrobenzyl group or a metronidazole (Mtz) unit). Different positions were considered and at least only two metronidazole (Mtz)-containing ligands and one nitro group-containing ligand as well as their corresponding tricarbonyl rhenium(I) complexes were obtained and characterized, in particular by electrochemistry. The reduction potentials of NO2 group in complexes [Re(CO)3Cl(L2)] and [Re(CO)3(L6)] were similar to those of reported hypoxic imaging agents, prompting us to further investigate other properties of these complexes. Chapter III was focused on the study of AIE (aggregation-induced emission) effect in tricarbonyl Re(I) complexes, the association of this effect with the intrinsic properties of Re(I) complexes being expected to lead to very attractive compounds. To do that, we combined an organic fluorophore (PBO) which exhibits excellent stability and optical properties, with a tricarbonylrhenium(I) complex based on a pyta unit (either a 2-pyridyl-1,2,3-triazole or a 2-pyridyl-1,2,4-triazole ligands). Four compounds were studied. The X-Ray structures revealed spectacular discrepancies between the two first triazole-based complexes ReL8 and ReL9. Moreover, this study being a novel orientation in our group, this work is a great starting point for further investigations. Various organic dyes and/or structural modifications of the organic moiety will soon be considered in order to develop highly emissive rhenium(I) luminescent probes.
Book Synopsis Rhenium-catalyzed Oxygen-atom Transfer Reactions by : Eric C. Brown
Download or read book Rhenium-catalyzed Oxygen-atom Transfer Reactions written by Eric C. Brown and published by . This book was released on 2002 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: In situ reduction of hydrido-tris-(3,5-dimethylpyrazolyl)borato(trioxo) rhenium(V) with triphenylphosphine or triethylphosphite leads to a reactive rhenium(V) species that catalytically deoxygenates epoxides at 75-105°C. The reaction is stereospecific, except for trans- and cis-butene oxide which formed minor amounts of the opposite isomer. A variety of different functional groups were tolerated and even epoxides that reacted slowly could be pushed to greater than 95% conversion given extended time and/or higher temperature. The absence of clustering processes shows how the choice of ligand can have a major influence on the design of the catalytic cycle. The rhenium(V) species formed from reduction of Tp'ReO3 was identified as Tp'Re(O)(OH)2. Tp'Re(O)(OH)2 reacted with ethanol and HCl to form ethoxide and hydroxo chloride complexes, respectively. In addition, Tp'Re(O)(OH)2 was an excellent catalytic and stoichiometric reagent for the deoxygenation of epoxides and sulfoxides. Loss of water from Tp'Re(O)(OH)2 to form the catalytically active species Tp'Re02 was shown to be a necessary preequilibrium process. The kinetic behavior of the catalytic system is complex. First-order behavior in [Re][subscript T], zero-order dependence in [PPh3] and saturation behavior for epoxide were observed. The reversible formation of a coordinated epoxide complex was proposed to explain the saturation behavior. The epoxide complex was shown experimentally and computationally to engage in two separate reactions: ring expansion to form a syn-diolate complex, and direct fragmentation to alkene and trioxide. A steady-state concentration of diolate is eventually reached explaining a "burst" of alkene production prior to generation of a pseudo-zero-order catalytic system. The diolate formed is the syn-isomer, which is the kinetically formed product. Direct epoxide fragmentation is the primary source of alkene. This process was determined to be four times faster than ring expansion for cis-stilbene oxide. The synthesis and characterization of a tethered-epoxide Cp* rhenium trioxide complex has been achieved. Reduction of this complex leads to an unsaturated rhenium(V) species that is immediately complexed by the tethered epoxide. Experimental data and molecular mechanics modeling support intramolecular coordination of the epoxide to the rhenium center. These results confirm that the coordinate epoxide is a viable intermediate in rhenium-catalyzed epoxide deoxygenations.
Book Synopsis Spectroelectrochemical Studies of Rhenium Carbonyl Complexes and Synthesis and Characterization of Conducting Polymers with Pendant Viologen Subunits by : Ching-Fong Shu
Download or read book Spectroelectrochemical Studies of Rhenium Carbonyl Complexes and Synthesis and Characterization of Conducting Polymers with Pendant Viologen Subunits written by Ching-Fong Shu and published by . This book was released on 1988 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterisation of Rhenium Carbonyl Complexes with Dicarboxylate Ligands by : Rui Zhang
Download or read book Synthesis and Characterisation of Rhenium Carbonyl Complexes with Dicarboxylate Ligands written by Rui Zhang and published by . This book was released on 2000 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ruthenium in Organic Synthesis by : Shun-Ichi Murahashi
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)
Book Synopsis Ruthenium Oxidation Complexes by : William P. Griffith
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.
Book Synopsis Synthesis, Characterization, and Reactivity of Rhenium Dithiodiolate and Monothiodiolate Complexes by : Pitak Chuawong
Download or read book Synthesis, Characterization, and Reactivity of Rhenium Dithiodiolate and Monothiodiolate Complexes written by Pitak Chuawong and published by . This book was released on 2001 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rhenium dithiodiolate, Hydrido-tris-(3,5-dimethyl- 1 -pyrazol yl) borato(ethane- 1,2-dithiodiolato)(oxo)rheni um(V), and Hydrido-tris-(3,5-dimethyl- 1 -pyrazolyl)borato(phenylethanedithiodiolato)(oxo)rhenium(V), were synthesized by reductive cyclocondensation of alkane-1,2-dithiols with Tp'Re03 in a one pot fashion. The rhemium monothiodiolate, Hydrido-tris-(3,5-dimethyl- 1 -pyrazolyl) borato(ethane- 1,2-monothiodiolato)(oxo)rhenium(V), and Hydrido-tris-(3,5- dimethyl- 1 -pyrazolyl)borato(propanemonothiodiolato)(oxo)rhenium(V), were also synthesized by using the same procedure. The syn and anti isomers of rhenium phenylethanedithiodiolate and rhenium propanemonothiodiolate were characterized by using COSY, nOe, and HSQC experiments. An X-ray crystal structure of the rhenium ethanedithiodiolate was obtained, and an unusually small dihedral angle (S-C-C-S) of about 12° was observed. The solution conformation of these compounds was investigated by using a Karplus relationship between vicinal coupling constants and dihedral angle. The dihedral angle for the ethanedithiodiolate appeared to be 38° indicating a staggered geometry for the ring. All of these complexes failed to cyclorevert to any detectable extent at 120°C after 7 days. This observation reflects the thermal stability of rhenium dithiodiolate and monothiodiolate complexes. Energetics of ethylene addition to tetrathioperrhenate anion (ReS4−) and addition of hydrogen sulfide to the alkene adduct were calculated by DFT calculation using LACVP** basis set with B3LYP functionals. The heat of reaction of ethylene addition to ReS4− was 15.4 kcal/mol, and 111.1 kcal/mol for addition of hydrogen sulfide to the alkene adduct. These results are consistent with the stability of the dithiodiolate complex toward cycloreversion reaction. Reaction of Tp'Re03 and ethylene sulfide led to the rhenium ethanedithiolate complex both with and without acid catalysis. This observation led to a proposed multi step mechanism.
Book Synopsis Application of Rhenium- and Vanadium-oxo Complexes as Catalysts in Organic Synthesis by : Alexander Thomas Radosevich
Download or read book Application of Rhenium- and Vanadium-oxo Complexes as Catalysts in Organic Synthesis written by Alexander Thomas Radosevich and published by . This book was released on 2007 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Macrocyclic Rhenium Organometallic Complexes by : Kathryn Brown O'Brien
Download or read book Synthesis and Characterization of Macrocyclic Rhenium Organometallic Complexes written by Kathryn Brown O'Brien and published by . This book was released on 1990 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterisation of Mononuclear and Dinuclear Rhenium Carbonyl Complexes by : Claire Brennan
Download or read book Synthesis and Characterisation of Mononuclear and Dinuclear Rhenium Carbonyl Complexes written by Claire Brennan and published by . This book was released on 2007 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
