Download or read book A Study of Ligand Substitution Reactions in Transition Metal Carbonyl Complexes written by Nataliya N. Turaki and published by . This book was released on 1987 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ligand Substitution Processes written by Cooper Harold Langford and published by . This book was released on 1966 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of the mechanistic study of ligand substitution reactions is currently undergoing an exciting growth. New fast-reaction techniques have removed the upper limit on rates that can be measured, and extension to less familiar central metal atoms has begun in earnest. This might seem the wrong moment for review of the field. As yet, definitive treatment is possible only for those complexes involving monodentate ligands with cobalt(III) and platinurn(II). But, because information is so extensive for these systems, it is clear that they are functioning as models from which concepts and experiments are generated for application over the fast-growing range of the subject. We believe that this is an important moment to reopen debate on fundamentals so that concepts will be most felicitously formulated to aid growth of understanding. This monograph is centrally concerned with three aspects of those fundamentals. We have attempted to develop an approach to classification of ligand substitution reactions that is adapted to what seem to have emerged as the characteristic features of these reactions and is susceptible to operational tests. (We do recognize that any such scheme of ideas is necessarily obsolescent once it is formulated since new experiments will certainly follow immediately.) We have tried to evaluate the basis for making generalizations about ligand substitution processes and to formulate tests to show whether new reactions fall within familiar patterns. Finally, we have sought to base the models of ligand substitution processes in the language of molecular-orbital theory. We believe that MO theory is most useful, because it may be used to correlate rate data on complexes with the extensive information available from spectral and magnetic studies, yet differs from crystal-field theory in providing a natural place for consideration of the bonding electrons, which must be a principal determinant of reaction processes. To keep this essay within bounds, we assume familiarity with the elements of experimental kinetics, transition-state theory, and the simple molecular-orbital theory of complexes. Introductory physical chemistry, some familiarity with the study of reaction mechanisms, and mastery of one of the qualitative treatments of MO theory as applied to transition-metal complexes should provide sufficient background. Thus, we hope that this book will be useful to students, relatively early in their careers, who wish to explore this field.

Download or read book A Study of the Kinetics and Reaction Mechanisms of ETC Ligand Substitution Reactions of Some Transition Metal Cluster Complexes written by Elizabeth S. Lee and published by . This book was released on 1986 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Textbook of Inorganic Chemistry Volume 1 written by Mandeep Dalal and published by Dalal Institute. This book was released on 2017-01-01 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: An advanced-level textbook of inorganic chemistry for the graduate (B.Sc) and postgraduate (M.Sc) students of Indian and foreign universities. This book is a part of four volume series, entitled "A Textbook of Inorganic Chemistry – Volume I, II, III, IV". CONTENTS: Chapter 1. Stereochemistry and Bonding in Main Group Compounds: VSEPR theory, dπ -pπ bonds, Bent rule and energetic of hybridization. Chapter 2. Metal-Ligand Equilibria in Solution: Stepwise and overall formation constants and their interactions, Trends in stepwise constants, Factors affecting stability of metal complexes with reference to the nature of metal ion and ligand, Chelate effect and its thermodynamic origin, Determination of binary formation constants by pH-metry and spectrophotometry. Chapter 3. Reaction Mechanism of Transition Metal Complexes – I: Inert and labile complexes, Mechanisms for ligand replacement reactions, Formation of complexes from aquo ions, Ligand displacement reactions in octahedral complexes- acid hydrolysis, Base hydrolysis, Racemization of tris chelate complexes, Electrophilic attack on ligands. Chapter 4. Reaction Mechanism of Transition Metal Complexes – II: Mechanism of ligand displacement reactions in square planar complexes, The trans effect, Theories of trans effect, Mechanism of electron transfer reactions – types; Outer sphere electron transfer mechanism and inner sphere electron transfer mechanism, Electron exchange. Chapter 5. Isopoly and Heteropoly Acids and Salts: Isopoly and Heteropoly acids and salts of Mo and W: structures of isopoly and heteropoly anions. Chapter 6. Crystal Structures: Structures of some binary and ternary compounds such as fluorite, antifluorite, rutile, antirutile, crystobalite, layer lattices- CdI2, BiI3; ReO3, Mn2O3, corundum, pervoskite, Ilmenite and Calcite. Chapter 7. Metal-Ligand Bonding: Limitation of crystal field theory, Molecular orbital theory, octahedral, tetrahedral or square planar complexes, π-bonding and molecular orbital theory. Chapter 8. Electronic Spectra of Transition Metal Complexes: Spectroscopic ground states, Correlation and spin-orbit coupling in free ions for Ist series of transition metals, Orgel and Tanabe-Sugano diagrams for transition metal complexes (d1 – d9 states), Calculation of Dq, B and β parameters, Effect of distortion on the d-orbital energy levels, Structural evidence from electronic spectrum, John-Tellar effect, Spectrochemical and nephalauxetic series, Charge transfer spectra, Electronic spectra of molecular addition compounds. Chapter 9. Magantic Properties of Transition Metal Complexes: Elementary theory of magneto - chemistry, Guoy’s method for determination of magnetic susceptibility, Calculation of magnetic moments, Magnetic properties of free ions, Orbital contribution, effect of ligand-field, Application of magneto-chemistry in structure determination, Magnetic exchange coupling and spin state cross over. Chapter 10. Metal Clusters: Structure and bonding in higher boranes, Wade’s rules, Carboranes, Metal Carbonyl Clusters - Low Nuclearity Carbonyl Clusters, Total Electron Count (TEC). Chapter 11. Metal-π Complexes: Metal carbonyls, structure and bonding, Vibrational spectra of metal carbonyls for bonding and structure elucidation, Important reactions of metal carbonyls; Preparation, bonding, structure and important reactions of transition metal nitrosyl, dinitrogen and dioxygen complexes; Tertiary phosphine as ligand.

Download or read book The Organometallic Chemistry of the Transition Metals written by Robert H. Crabtree and published by John Wiley & Sons. This book was released on 2005-06-14 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and expanded to reflect recent advances, this Fourth Edition of the classic text provides students and professional chemists with an excellent introduction to the principles and general properties of organometallic compounds, as well as including practical information on reaction mechanisms and detailed descriptions of contemporary applications.

Download or read book A Study of Ligand Substitution Reactions in the Five Coordinate Complexes Cu TREN OH2 2 Cu Me6 TREN OH2 2 and Cu Me6 TREN OH written by Peter Ralph Collins and published by . This book was released on 1979 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Introduction to Metal Complex Chemistry written by M. Tsutsui and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Plenum Press series, Monographs in Inorganic Chemistry, is intended to fill an obvious need for high-level surveys of recent research in that area, particularly in matters which go beyond the traditional or classical bound aries of the subject. The study of n-bonding of hydrocarbon groups (and their derivatives) to metals is exactly that kind of subject, for it provides a new way of understanding the behavior of metals (which constitute four-fifths of all the chemical elements). In addition, n-bonding has expanded the intriguing area of organometallic chemistry threefold, bringing in all the transition metals, the lanthanides, and the actinides. So much has been discovered and developed in the area of n-bonded "complexes" of the metals that important new industrial processes based on such substances have been developed. A truly comprehensive review of all n-bonded compounds of the metals would now result in an impossibly large and expensive volume, and would require monthly revision. Instead, the present authors have wisely decided to write a survey which outlines the general aspects of preparation, properties, structure, reactions, and uses of such compounds-a survey which can serve as a textbook, but which can also lead the more experienced practitioner to the most advanced literature on the subject. They have clarified and condensed the subject by means of good organization and a liberal use of diagrams-features which will please the general reader.

Download or read book Kinetics and Mechanisms of Substitution Reactions on Transition Metal Carbonyl Complexes Containing a Metal metal Bond written by David C. Sonnenberger and published by . This book was released on 1982 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kinetics and Mechanisms of Substitution and Exchange Reactions of Transition Metal Carbonyl Complexes written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reactions of Transition metal Complexes written by J. P. Candlin and published by . This book was released on 1968 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ligand substitution and insertion reactions of group 6 metal carbonyl complexes written by Karen Jennifer Schneider and published by . This book was released on 1989 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ligand Platforms in Homogenous Catalytic Reactions with Metals written by Ryohei Yamaguchi and published by John Wiley & Sons. This book was released on 2014-11-17 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Serving as a user's manual for synthetic organic and catalytic chemists, this book guides chemists in the design and choice of ligands to catalyze organic reactions and apply the results for more efficient, green, and practical synthesis. • Focuses on the role of ligands in metal complexes that catalyze green organic transformations: a hot topic in the area of organic synthesis and green chemistry • Offers a comprehensive resource to help readers design and choose ligands and understand selectivity/reactivity characteristics • Addresses a gap by taking novel ligand approaches and including up-to-date discussion on hydrogen transfers and reactions • Presents important industrial perspective and provides rational explanations of ligand effects, impacts, and novelty

Download or read book The Study of Kinetics and Mechanism of Reactions of Transition Metal Complexes written by Ralph G. Wilkins and published by . This book was released on 1974 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis Reactions and Kinetics of Indenyl nitrosyl Group VI Metal Carbonyl Complexes with Phosphorus Ligands written by Rmdan A. Altwer and published by . This book was released on 2014 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ligand exchange reactions between various metal carbonyl derivatives and incoming ligands such as phosphine and phosphites have been extensively studied. It is known that prototypical organometallic compounds such as ([eta]5-C5H5)Mn(CO)3 are virtually unreactive to thermal exchange of carbonyl ligands while its indenyl derivative ([eta]5-C9H7)Mn(CO)3 undergoes carbonyl exchange at moderate temperatures. Several examples of rate acceleration by indenyl ligands relative to cyclopentadienyl ligands have now been reported and the observed "indenyl effect" attributed to the ability of the indenyl ligand being able to shift its binding from [eta]5 to [eta]3 during associative reactions. This [eta]5 to [eta]3 haptotropic rearrangement lowers the energy of activation. A similar effect has been observed for metal nitrosyl compounds. In these cases, the nitrosyl ligand is normally observed to be bound linearly to the metal and formally treated as a three-electron donor. Associative reactions of metal carbonyl, nitrosyl compounds with ligands have been shown to be accelerated relative to all carbonyl compounds. This acceleration is attributed to a "nitrosyl effect" in which the nitrosyl ligand can go from a linear, three-electron donor to a bent, one-electron donor in the associative reaction intermediate. The family of Group VI compounds [eta]5-C5H5)M(CO)2(NO) and their indenyl derivatives offer an interesting platform to examine both indenyl and nitrosyl effects in the same molecules The ([eta]5-C5H5)M(CO)2(NO) derivatives for Cr, Mo and W are known, but only ([eta]5-C9H7)Cr(CO)2(NO) has been reported for the indenyl derivatives. The chromium compound was prepared using CrCl(CO)2(NO)Py2 as a precursor. This research set out to prepare the series of Group VI compounds, ([eta]5-C9H7)M(CO)2(NO), by conventional routes using the reaction of ([eta]5-C9H7)M(CO)3 anions with known NO donors such as Diazald. Subsequent carbonyl exchange kinetics studies were planned with the goal of investigating the indenyl and nitrosyl effects down the Group VI family of compounds. ([eta]5-C9H7)Cr(CO)2(NO) was successfully prepared by the proposed route, albeit in low yield, but neither the Mo or W compounds could be prepared. A simple alkylation reaction to prepare ([eta]5-C9H7)M(CO)3(CH2C6H5) was carried out after many failures to ensure ourselves that the intermediate ([eta]5-C9H7)M(CO)3 anions were being successfully prepared. Our kinetics studies were therefore limited to ([eta]5-C9H7)Cr(CO)2(NO). As noted above, the corresponding ([eta]5-C5H5)Cr(CO)2(NO) derivative has been reported to be thermally unreactive with PPh3 although derivatives of the form ([eta]5-C5H5)Cr(CO)(NO)L, where L = phosphine or phosphite, can be prepared photochemically. We have carried out a series of pseudo-first order kinetics studies of ([eta]5-C9H7)Cr(CO)2(NO) with PMe3, PBu3, PMe2Ph and P(OMe)3. This series represents a range of ligand nucleophilicity and cone angle (steric bulk). Energies of activation were determined by measurements of the rates of reaction across a range of temperatures, while the entropy and enthalpies of activation were extracted from Eyring plots. The strongly negative entropies of activation are consistent with an associative reaction. The data do not allow us to parse out the relative contributions of indenyl and nitrosyl effects, but the observation that [delta]S[not equal] values are on the order of -49 eu, while those of ([eta]5-C9H7)Mn(CO)3 are around -26 eu argues for an associative mechanism.

Download or read book A Study of the Substitution Carbonylation and Free Radical Reactions of Some Transition Metal Complexes written by J. D. Furze and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reactions of Coordinated Ligands written by P.S. Braterman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This, the second and final volume of Reactions of Coordinated Ligands, describes the chemistry of ligands bound through non-carbon atoms, and of coordinated carbon dioxide. As before, emphasis is on the underlying mechanisms, which provide a unity of understanding for superficially disparate processes. The wide range of topics covered illustrates well both the versatility and the usefulness of coordination chemistry in the controlled activation of ligands. Looking to the future, carbon dioxide is the feedstock of last resort. The homogeneous reduction of dinitrogen to ammonia now seems unlikely to replace the Haber process, but solution reactions also lead to more complex, varied, and valuable products. Nitrogen monoxide, a "non innocent" ligand, impinges as pollutant and reagent. Its rich chemistry stems from its linked roles as three-electron donor, and as extremely powerful -acceptor. In the hydrolysis and condensation of complexed amides, esters etc. , metals act both as templates and as tunable and poly functional Lewis acids. Here the control of hydrophobic and steric interactions begins to model the subtle mechanisms of biological specificity. Finally, phosphorus and sulfur are imporant both as ligand atoms in themselves, and as anchors for other functionalities. I would like to thank all those who have been involved in the writing and production of this work, and also my colleagues old and new, at Glasgow and the University of North Texas, for their support. Paul S. Braterman v CONTENTS 1. Reactions of Coordinated Carbon Dioxide 1 J. D. Miller 1.

Download or read book The Organometallic Chemistry of the Transition Metals written by Robert H. Crabtree and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: "One impressive and compressive book. . . . This review would have to be book size to do full justice to all the insights in this volume." —Journal of Metals Online Fully updated and expanded to reflect recent advances, this Fifth Edition of the classic text provides students and professional chemists with a comprehensive introduction to the principles and general properties of organometallic compounds, as well as including practical information on reaction mechanisms and detailed descriptions of contemporary applications. With increased focus on organic synthesis applications, nanoparticle science, and green chemistry, the Fifth Edition brings this vital resource up to date. New to the Fifth Edition: Chapters have been updated with relevant examples in the field, modern trends, and new applications; the organic applications chapter has been completely rewritten New end-of-chapter problems, along with their solutions Coverage enhanced with developments in nanoparticle science Increased focus on green chemistry An unparalleled pedagogic resource as well as a valuable working reference for professional chemists, with comprehensive coverage and up-to-date information, students and researchers in organic and organometallic chemistry will turn to The Organometallic Chemistry of the Transition Metals, Fifth Edition for the critical information they need on organometallic compounds, their preparation, and their use in synthesis.