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The Reaction Of Phosphine With A Ruthenium Ii Porphyrin Synthesis Of A Potential Precursor To A Phosphinidene Complex
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Book Synopsis The Reaction of Phosphine with a Ruthenium (II) Porphyrin Synthesis of a Potential Precursor to a Phosphinidene Complex by : Marie-Pierre Jasinski
Download or read book The Reaction of Phosphine with a Ruthenium (II) Porphyrin Synthesis of a Potential Precursor to a Phosphinidene Complex written by Marie-Pierre Jasinski and published by . This book was released on 1990 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Structures and Spectroscopic Properties of Primary and Secondary Phosphine Complexes of Iron, Ruthenium and Osmium Porphyrins by : Jin Xie
Download or read book Synthesis, Structures and Spectroscopic Properties of Primary and Secondary Phosphine Complexes of Iron, Ruthenium and Osmium Porphyrins written by Jin Xie and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Synthesis, Structures and Spectroscopic Properties of Primary and Secondary Phosphine Complexes of Iron, Ruthenium and Osmium Porphyrins" by Jin, Xie, 解錦, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled SYNTHESIS, STRUCTURES AND SPECTROSCOPIC PROPERTIES OF PRIMARY AND SECONDARY PHOSPHINE COMPLEXES OF IRON, RUTHENIUM AND OSMIUM PORPHYRINS Submitted by XIE JIN For the degree of Doctor of Philosophy at The University of Hong Kong in Oct 2007 Primary and secondary phosphine complexes of transition metals are of fundamental importance in metal-mediated P-H bond functionalization, phosphido/phosphinidene formation, and have applications in materials science. This thesis mainly describes the first isolation of primary and secondary phosphine complexes of a metalloporphyrin, along with their spectral, structural, and redox properties. The reactivity of primary and secondary phosphines coordinated to metalloporphyrins, particularly their hydrophosphination reactions with C=C bonds, is included. Investigations on the attempted approach to metal primary phosphine complexes bearing a pentapyridyl ligand (PY5) are also included. Ruthenium and osmium porphyrins form isolable complexes with primary and II secondary phosphines. Complexes [Ru (por)(PH Ph )] and n 3-n 2 II II [Os (por)(CO)(PH Ph )] (n = 1, 2) were prepared from reaction of [M (por)(CO)] n 3-n VI (M = Ru, Os) with excess PH Ph or PHPh . Reaction of [Os (por)O ] with PHPh 2 2 2 2 II mainly generated [Os (por){P(OH)Ph }(PHPh )], with concomitant formation of 2 2 II minor amounts of [Os (por){P(OH)Ph } ]. The bis-(primary phosphine) complex 2 2 II [Ru (F -tpp)(PH Ph)] is strikingly stable toward air and features reversible 20 2 2 +/0 Ru(II)/Ru(III) oxidation couple at E = 0.39 V vs Cp Fe . NMR spectrum 1/2 2 simulation revealed a strong coupling between the trans P nuclei in II 2 2 [Ru (por)(PH Ph ) ] (n = 1, 2; J ≈ 500 Hz). A J value of 467 Hz was directly n 3-n 2 PP PP 31 II obtained from the proton-decoupled P NMR spectrum of [Os (F - 20 tpp){P(OH)Ph }(PHPh )], which is much larger than that observed for the trans 2 2 phosphines in a non-porphyrin osmium phosphine complex. A one-pot synthesis of metal primary phosphine complexes from user-friendly O=PClR and PClR has been realized by treating these precursors with 2 2 II [Ru (por)(CO)] and LiAlH, leading to the isolation of primary alkylphosphine II complexes of ruthenium porphyrins, [Ru (por)(PH R) ] (por = ttp, 4-MeO-ttp, F -tpp; 2 2 20 t sec R = Ad, Bu, Bu), which are the first examples of primary alkylphosphine complexes of ruthenium. II Reactions of [Ru (F -tpp)(PH Ph ) ] (n = 1, 2) with CH =CHR (R = CO Et, 20 n 3-n 2 2 2 t II CN) in the presence of BuOK afforded [Ru (F -tpp){P(CH CH R) Ph } ] in high 20 2 2 n 3-n 2 yields. This is the first observation of alkene hydrophosphination by primary/secondary phosphines coordinated to a metalloporphyrin. The reactions of III [Fe (por)Cl] (por = F -tpp, 2,6-Cl tpp) with Na S O followed by treatment with 20 2 2 2 4 excess PH Ph, PHPh, or PH Ad led to the isolation of the first examples of iron 2 2 2 porphyrin complexes of primary and secondary phosphines, of which the primary phosphine complexes underwent partial dissociation in solutions at room temperature. Treatment of PY5 (or PY5-OH) with Ag(p-MeC H SO), AgNO, or 6 4 3 3 [Cu(MeCN) ]PF resulted in the isolation of [Ag (L) ]X (L = PY5 or PY5-OH, X = 4 6 2 2 2 - - I p-MeC H SO or NO ) and [Cu (PY5)(MeCN)]PF, which adopt two types of 6 4 3 3 6
Book Synopsis Journal of the Chemical Society by :
Download or read book Journal of the Chemical Society written by and published by . This book was released on 1992 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal by : American Chemical Society
Download or read book Journal written by American Chemical Society and published by . This book was released on 2004 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactivity of Ruthenium Porphyrin Complexes Containing a Nitrosyl Or Thionitrosyl Ligand by : Bryan Drew Smith
Download or read book Synthesis and Reactivity of Ruthenium Porphyrin Complexes Containing a Nitrosyl Or Thionitrosyl Ligand written by Bryan Drew Smith and published by . This book was released on 1997 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1989 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Structures and Spectroscopic Properties of Primary and Secondary Phosphine Complexes of Iron, Ruthenium and Osmium Porphyrins by : Jin Xie (Ph. D.)
Download or read book Synthesis, Structures and Spectroscopic Properties of Primary and Secondary Phosphine Complexes of Iron, Ruthenium and Osmium Porphyrins written by Jin Xie (Ph. D.) and published by . This book was released on 2007 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reactions of Ruthenium (II) Para-substituted Tetraphenylporphyrin Complexes with Carbon Monoxide and Oxygen by : Lloyd Barringer
Download or read book Reactions of Ruthenium (II) Para-substituted Tetraphenylporphyrin Complexes with Carbon Monoxide and Oxygen written by Lloyd Barringer and published by . This book was released on 1979 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus-31 NMR Spectroscopy by : Olaf Kühl
Download or read book Phosphorus-31 NMR Spectroscopy written by Olaf Kühl and published by Springer Science & Business Media. This book was released on 2008-08-22 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear Magnetic Resonance is a powerful tool, especially for the identification of 1 13 hitherto unknown organic compounds. H- and C-NMR spectroscopy is known and applied by virtually every synthetically working Organic Chemist. Con- quently, the factors governing the differences in chemical shift values, based on chemical environment, bonding, temperature, solvent, pH, etc. , are well understood, and specialty methods developed for almost every conceivable structural challenge. Proton and carbon NMR spectroscopy is part of most bachelors degree courses, with advanced methods integrated into masters degree and other graduate courses. In view of this universal knowledge about proton and carbon NMR spectr- copy within the chemical community, it is remarkable that heteronuclear NMR is still looked upon as something of a curiosity. Admittedly, most organic compounds contain only nitrogen, oxygen, and sulfur atoms, as well as the obligatory hydrogen and carbon atoms, elements that have an unfavourable isotope distribution when it comes to NMR spectroscopy. Each of these three elements has a dominant isotope: 14 16 32 16 32 N (99. 63% natural abundance), O (99. 76%), and S (95. 02%), with O, S, and 34 14 S (4. 21%) NMR silent. N has a nuclear moment I = 1 and a sizeable quadrupolar moment that makes the NMR signals usually very broad and dif cult to analyse.
Book Synopsis Tungsten Complexes by : Harry Beckerman
Download or read book Tungsten Complexes written by Harry Beckerman and published by . This book was released on 1918 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Dissertation Index by :
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Aspects in Phosphorus Chemistry II by : Jean-Pierre Majoral
Download or read book New Aspects in Phosphorus Chemistry II written by Jean-Pierre Majoral and published by Springer Science & Business Media. This book was released on 2002 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strong non-ionic bases are highly advantageous as stoichiometric reagents and as catalysts in synthetic organic chemistry owing to side reactions that f- quently occur when ionic bases such as LDA or alkali metal alkoxides are employed. A second reason that non-ionic bases are frequently more useful in these applications is that such bases are often more soluble in less polar organic solvents, particularly at low temperatures. Thirdly, non-ionic bases can provide reactive naked or tightly associated deprotonated substrate anions that are s- bilized by the relatively large, poorly solvated cations formed by the protonated base. In such cations, extensive positive charge delocalization can occur. Prior to our work on pro-azaphosphatranes of type 1 (Scheme 1), the very strong n- ionic bases utilized for organic transformations were largely confined to the nitrogenous bases shown below (Scheme 2). Scheme 1 Scheme 2 4 J.G. Verkade 2 Uses of Strong Nonionic Nitrogen Bases 2. 1 Amines One of the earliest strong non-ionic bases to make its appearance was Proton Sponge and its derivatives [1] and these systems have been reviewed [2]. More recently Proton Sponge has been used in the palladium-catalyzed arylation of 2,3-dihydrofuran [3], and it also catalyzes Knoevenagel condensations of s- strates possessing activated methylene groups [4]. Recently the synthesis of the macrocyclic tetramine below (Scheme 3) was reported [5]. The encrypted nitrogens are very basic (pK,24.
Book Synopsis Organophosphorus Chemistry by : Viktor Iaroshenko
Download or read book Organophosphorus Chemistry written by Viktor Iaroshenko and published by John Wiley & Sons. This book was released on 2019-04-22 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the gap for an up-to-date reference that presents the field of organophosphorus chemistry in a comprehensive and clearly structured way, this one-stop source covers the chemistry, properties, and applications from life science and medicine. Divided into two parts, the first presents the chemistry of various phosphorus-containing compounds and their synthesis, including ylides, acids, and heterocycles. The second part then goes on to look at applications in life science and bioorganic chemistry. Last but not least, such important practical aspects as 31P-NMR and protecting strategies for these compounds are presented. For organic, bioinorganic, and medicinal chemists, as well as those working on organometallics, and for materials scientists. The book, a contributed work, features a team of renowned scientists from around the world whose expertise spans the many aspects of modern organophosphorus chemistry.
Book Synopsis Directory of Graduate Research by : American Chemical Society. Committee on Professional Training
Download or read book Directory of Graduate Research written by American Chemical Society. Committee on Professional Training and published by . This book was released on 2005 with total page 1932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
Book Synopsis Inorganometallic Chemistry by : Thomas P. Fehlner
Download or read book Inorganometallic Chemistry written by Thomas P. Fehlner and published by Springer Science & Business Media. This book was released on 2013-11-22 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a certain fascination associated with words. The manipulation of strings of symbols according to mutually accepted rules allows a language to express history as well as to formulate challenges for the future. But language changes as old words are used in a new context and new words are created to describe changing situations. How many words has the computer revolution alone added to languages? "Inorganometallic" is a word you probably have never encountered before. It is one created from old words to express a new presence. A strange sounding word, it is also a term fraught with internal contradiction caused by the accepted meanings of its constituent parts. "In organic" is the name of a discipline of chemistry while "metallic" refers to a set of elements constituting a subsection of that discipline. Why then this Carrollian approach to entitling a set of serious academic papers? Organic, the acknowledged doyenne of chemistry, is distinguished from her brother, inorganic, by the prefix "in," i. e. , he gets everything not organic. Organometallic refers to compounds with carbon-metal bonds. It is simple! Inorganometallic is everything else, i. e. , compounds with noncarbon-metal element bonds. But why a new term? Is not inorganic sufficient? By virtue of training, limited time, resources, co-workers, and so on, chemists tend to work on a specific element class, on a particular compound type, or in a particular phase. Thus, one finds element-oriented chemists (e. g.
Book Synopsis Organometallic Chemistry and Catalysis by : Didier Astruc
Download or read book Organometallic Chemistry and Catalysis written by Didier Astruc and published by Springer Science & Business Media. This book was released on 2007-08-02 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers both basic and advanced aspects of organometallic chemistry of all metals and catalysis. In order to present a comprehensive view of the subject, it provides broad coverage of organometallic chemistry itself. The catalysis section includes the challenging activation and fictionalization of the main classes of hydrocarbons and the industrially crucial heterogeneous catalysis. Summaries and exercises are provides at the end of each chapter, and the answers to these exercises can be found at the back of the book. Beginners in inorganic, organic and organometallic chemistry, as well as advanced scholars and chemists from academia and industry will find much value in this title.
Author :Guillermo Gonzalez-Moraga Publisher :Springer Science & Business Media ISBN 13 :3642859267 Total Pages :310 pages Book Rating :4.6/5 (428 download)
Book Synopsis Cluster Chemistry by : Guillermo Gonzalez-Moraga
Download or read book Cluster Chemistry written by Guillermo Gonzalez-Moraga and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cluster chemistry is one of the recent, exciting areas of Inorganic Chemistry. The occurence of molecular clusters, like fullerene C60, constitutes a fundamental feature midway between the chemistry of isolated chemical compounds and that of the elements. Main features of the Cluster Chemistry of both main group and transition metal elements are treated in this book. The author highlights aspects releated to the synthesis, the structure, the special bonding and the reactivity of these species. The book is written as a textbook for senior undergraduate and postgraduate students. References in tables andillustrations permit the reader to reach relevant original information. Professor Gonzalez-Moraga fills a demand for a publication appropriate for dissemination and specially for teaching this exciting subject. From the Contents: Current Concepts in Modern Chemistry - Transition Metal Cluster Chemistry - Main Group-Transition Metal Mixed Clusters - Cluster Compounds of the Main Group Elements - Synthetic Analogues of the Active Sites of Iron-Sulfur Proteins.
