Download or read book Resonance Raman Investigation of Metal to Ligand Charge Transfer Transitions in Selected Inorganic Complexes written by 陳容芳 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, "Resonance Raman Investigation of Metal to Ligand Charge Transfer Transitions in Selected Inorganic Complexes" by 陳容芳, Yung-fong, Yvonne, Cheng, 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. DOI: 10.5353/th_b3122414 Subjects: Raman spectroscopy Raman effect, Resonance Acetylene compounds - Spectra Ligands Charge transfer Chemistry, Inorganic

Download or read book Electronic Charge Transfer and Dynamics in Manganese and Iron Coordination Complexes Studied with Resonant Inelastic X ray Scattering written by Drew Alan Meyer and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray spectroscopy is a powerful tool in the study of electronic structure. I have utilized resonant inelastic x-ray scattering (RIXS) to study electronic charge transfer and electronic dynamics in transition metal complexes. RIXS creates a core-hole by scanning through the x-ray absorption edge while simultaneously measuring the emitted x-ray photons as the system relaxes to a lower energy core-hole state. RIXS is analogous to Resonance Raman spectroscopy but due to the properties of hard x-ray radiation, the tool is an elemental specific probe of electronic transitions. Charge transfer is a vital property of transition metal catalysts and I am able to assign RIXS spectral features to ligand-to-metal and metal-to-ligand charge transfer resonances and clearly characterize the nature of the molecular orbitals that are involved. I have also determined the effectiveness of extracting electronic dynamics from RIXS by carefully analyzing entire 1s3p RIXS data sets. The very short lifetime of the hard x-ray excited core-hole states means the RIXS process is sensitive to ultrafast electronic dynamics. The study of both charge transfer and electronic dynamics has been complimented by theoretical techniques to further the scientific understanding. The combination of RIXS measurements and density functional calculations allows the determination of the strength of the ligand-metal electronic interaction and assignment of the Raman resonances to charge transfer transitions in several manganese and iron cyanide complexes. With x-ray excitation energies resonant with the t2g and eg pre-edge peaks derived predominantly from the Mn 3d orbitals, the observation of Raman resonances in the energy transfer range from 2 to 12 eV which result from the filling of the 1s core-hole from t1u-symmetry occupied orbitals can be assigned as ligand-to-metal charge transfers. Evidence is also presented for the observation of a transition that leaves the state with increased electronic density in a ligand orbital while creating a metal hole, representing a metal-to-ligand charge transfer. The technique is then applied to K3Fe(CN)6, K4Fe(CN)6, and RbMnFe(CN)6. The two iron cyanides show similar results to those obtained with the manganese complex and the peak positions and relative intensities are discussed in relation to the electronic structure of the complexes. The manganese K-shell RIXS for RbMnFe(CN)6 shows significant deviation from the strong field metal-cyanide centers. The demonstration of the power of the technique on well characterized model systems opens the door for RIXS to be applied to more chemically relevant systems which is necessary for RIXS to develop widespread impact. I have also explored the potential for extracting excited state electron dynamics from RIXS spectra. This has involved detailed theoretical analysis of K3Mn(CN)6 and RbMnFe(CN)6 spectra. 'Core-hole clock' resonant soft x-ray studies have been utilized in the past to determine dynamic properties for a number of systems by relying on the lifetime of the excited core-hole. Due to the shortened lifetime of the hard x-ray excited core-holes, the technique is able to probe ultrafast electronic dynamics. The standard Kramer-Heisenberg description of RIXS attributes all dynamical effects to an excitation independent 1s core-hole lifetime and a final-state dependent lifetime broadening. Thorough study of the experimental data demonstrates that the standard implementation of the Kramers-Heisenberg formula cannot fully account for the experimentally observed excited state dynamics. We have proposed an alternative approach to analyzing RIXS spectra based on a density matrix formalism developed by Mukamel. The results demonstrate that while the Kramers-Heisenberg method is able to qualitatively model the spectra, it is unable to account for all aspects of the spectral dynamics within the RIXS spectrum. While the density matrix formalism is able to more accurately describe the spectral features in the RIXS, a more detailed theoretical understanding of the dynamics involved is necessary to robustly extract a dephasing time and better understand the ultrafast electronic response to core-hole creation.

Download or read book Profiling the Solvatochromic Metal to ligand Charge Transfer Transitions of Ru NH3 4bipyridine 2 with Absorption and Resonance Raman Spectroscopy written by John Streiff and published by . This book was released on 1998 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spectroscopic Properties of Inorganic and Organometallic Compounds written by Jack Yarwood and published by Royal Society of Chemistry. This book was released on 2013-05-24 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopic Properties of Inorganic and Organometallic Compounds: Techniques, Materials and Applications provides a unique source of information in an important area of chemistry. Since Volume 40 the nature and ethos of this series have been altered to reflect a change of emphasis towards 'Techniques, Materials and Applications'. Researchers will now find up-to-date critical reviews which provide in-depth analyses of the leading papers in the field, with authors commenting of the quality and value of the work in a wider context. Focus areas will include structure-function relationships, photochemistry and spectroscopy of inorganic complexes, and catalysis; materials such as ceramics, cements, pigments, glasses and corrosion products; techniques such as advanced laser spectroscopy and theoretical methods.

Download or read book Resonance Raman Studies of Transition Metal Complexes Containing Activated Oxygen Species written by Elizabeth Conrad Wilkinson and published by . This book was released on 1998 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shriver and Atkins Inorganic Chemistry written by Peter Atkins and published by Oxford University Press, USA. This book was released on 2010 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic Chemistry fifth edition represents an integral part of a student's chemistry education. Basic chemical principles are set out clearly in 'Foundations' and are fully developed throughout the text, culminating in the cutting-edge research topics of the 'Frontiers', which illustrate the dynamic nature of inorganic chemistry.

Download or read book A resonance Raman investigation of some copper and cobalt macrocyclic complexes and transition metal containing proteins written by Nancy Stadler Ferris and published by . This book was released on 1981 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Practical Approaches to Biological Inorganic Chemistry written by Robert R. Crichton and published by Elsevier. This book was released on 2019-09-10 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical Approaches to Biological Inorganic Chemistry, Second Edition, reviews the use of spectroscopic and related analytical techniques to investigate the complex structures and mechanisms of biological inorganic systems that contain metals. Each chapter presents an overview of the technique, including relevant theory, a clear explanation of what it is, how it works, and how the technique is actually used to evaluate biological structures. New chapters cover Raman Spectroscopy and Molecular Magnetochemistry, but all chapters have been updated to reflect the latest developments in discussed techniques. Practical examples, problems and many color figures are also included to illustrate key concepts. The book is designed for researchers and students who want to learn both the basics and more advanced aspects of key methods in biological inorganic chemistry. Presents new chapters on Raman Spectroscopy and Molecular Magnetochemistry, as well as updated figures and content throughout Includes color images throughout to enable easier visualization of molecular mechanisms and structures Provides worked examples and problems to help illustrate and test the reader’s understanding of each technique Written by leading experts who use and teach the most important techniques used today to analyze complex biological structures

Download or read book Resonance Raman and Photophysical Studies of Transition Metal Complexes in Solution and Entrapped in Zeolites written by and published by . This book was released on 1992 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have obtained convincing evidence for localization of the optical electron on a single-ring fragment of a chelated bipyridine-like'' ligand (ie., pyridylpyrazine or 4-Methyl-bipyridine). In addition we have completed studies of Ru(bipyrazine)3{sup 2+} in aqueous sulfuric acid (0--98% by weight) and find clear evidence for sequential addition of six-protons to the six peripheral nitrogen atoms. Studies of zeolite-entrapped complexes are continuing and a series of homo- and heteroleptic complexes have been prepared and characterized. Finally, the synthesis of zeolite-entrapped metallophthalocyanines has now been developed and the copper and cobalt analogues synthesized. The characterization of these materials is now in progress.

Download or read book Nitrosyl Complexes in Inorganic Chemistry Biochemistry and Medicine I written by D. Michael P. Mingos and published by Springer. This book was released on 2014-06-05 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Structure and Bonding publishes critical reviews on topics of research concerned with chemical structure and bonding. The scope of the series spans the entire Periodic Table and addresses structure and bonding issues associated with all of the elements. It also focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures. Physical and spectroscopic techniques used to determine, examine and model structures fall within the purview of Structure and Bonding to the extent that the focus is on the scientific results obtained and not on specialist information concerning the techniques themselves. Issues associated with the development of bonding models and generalizations that illuminate the reactivity pathways and rates of chemical processes are also relevant. The individual volumes in the series are thematic. The goal of each volume is to give the reader, whether at a university or in industry, a comprehensive overview of an area where new insights are emerging that are of interest to a larger scientific audience. Thus each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years should be presented using selected examples to illustrate the principles discussed. A description of the physical basis of the experimental techniques that have been used to provide the primary data may also be appropriate, if it has not been covered in detail elsewhere. The coverage need not be exhaustive in data, but should rather be conceptual, concentrating on the new principles being developed that will allow the reader, who is not a specialist in the area covered, to understand the data presented. Discussion of possible future research directions in the area is welcomed. Review articles for the individual volumes are invited by the volume editors. Readership: research scientists at universities or in industry, graduate students Special offer For all customers who have a standing order to the print version of Structure and Bonding, we offer free access to the electronic volumes of the Series published in the current year via SpringerLink.

Download or read book Inorganic Chemistry written by Mark Weller and published by Oxford University Press, USA. This book was released on 2014 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading the reader from the fundamental principles of inorganic chemistry, right through to cutting-edge research at the forefront of the subject, Inorganic Chemistry, Sixth Edition is the ideal course companion for the duration of a student's degree. The authors have drawn upon their extensive teaching and research experience in updating this established text; the sixth edition retains the much-praised clarity of style and layout from previous editions, while offering an enhanced Frontiers section. Exciting new applications of inorganic chemistry have been added to this section, in particular relating to materials chemistry and medicine. This edition also sees a greater use of learning features to provide students with all the support they need for their studies. Providing comprehensive coverage of inorganic chemistry, while placing it in context, this text will enable the reader to fully master this important subject. Online Resource Centre: For registered adopters of the text: · Figures, marginal structures, and tables of data ready to download · Test bank For students: · Answers to self-tests and exercises from the book · Videos of chemical reactions · Tables for group theory · Web links · Interactive structures and other resources on www.chemtube3D.com

Download or read book Resonance Raman Infrared and Electronic Spectral Studies of Transition Metal Complexes written by J. R. Campbell and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Raman Spectroscopy of Ground and Excited Electronic States of Organic Complexes of D6 Transition Metals written by Young C. Chung and published by . This book was released on 1985 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Coordination Chemistry II written by J. A. McCleverty and published by Newnes. This book was released on 2003-12-03 with total page 11845 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Coordination Chemistry II (CCC II) is the sequel to what has become a classic in the field, Comprehensive Coordination Chemistry, published in 1987. CCC II builds on the first and surveys new developments authoritatively in over 200 newly comissioned chapters, with an emphasis on current trends in biology, materials science and other areas of contemporary scientific interest.

Download or read book Resonance Raman and Photophysical Studies of Transition Metal Complexes in Solution and Entrapped in Zeolites Progress Report August 1 1990 January 1993 written by and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Area of most intense activity involves study of effects of entrapment of ruthenium(II)-polypyridyl complexes within the supercages of Y-zeolite. Results of initial studies document alterations in photophysical properties of entrapped complexes and provide insight into the factors responsible for these changes. A second major activity was to undertake an investigation of the feasibility of entrapment of metallophthalocyanines within the Y-zeolite supercages. Initial problems in preparative methodology used for these systems have been overcome and several systems have now been prepared and purified for projected photoredox studies. A third major objective was to develop and utilize a sound interpretive framework for resonance Raman (RR) and time-resolved RR (TR3) methods for investigating subtle perturbations in ground- and 3MLCT-state electronic structure which might be induced by substituent or environmentally-induced asymmetry, effects which could possibly lead to critical functional alterations.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Resonance Raman Studies of Charge transfer Compounds written by William Lee Barrow and published by . This book was released on 1982 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: