Download or read book Resonance Raman Studies of Some Organic Compounds written by Sahel Mohammed Al-Nakkash and published by . This book was released on 1979 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: RAMAN SPECTROSCOPY, PYRIMIDINES, FURANES, THYMINE, ADENINE, ADENOSINE, HETEROCYCLIC COMPOUNDS.

Download or read book Resonance Raman Studies of Some Mixed Valence Compounds written by Edward E. Remsen and published by . This book was released on 1980 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Infrared and Raman Spectra of Inorganic Compounds and Organic Salts written by Richard A. Nyquist and published by Gulf Professional Publishing. This book was released on 1996-08-30 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Infrared and Raman Spectra of Inorganic Compounds and Organic Salts

Download or read book Resonance Raman Studies of Some Transition Metal Compounds written by E-W. E. Nour 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 Applications of Infrared Raman and Resonance Raman Spectroscopy in Biochemistry written by Frank S. Parker and published by Springer Science & Business Media. This book was released on 1983-10-01 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Handbook of Infrared and Raman Characteristic Frequencies of Organic Molecules written by Daimay Lin-Vien and published by Elsevier. This book was released on 1991-12-02 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This necessary desk reference for every practicing spectroscopist represents the first definitive book written specifically to integrate knowledge about group frequencies in infrared as well as Raman spectra. In the spirit of previous classics developed by Bellamy and others, this volume has expanded its scope and updated its coverage. In addition to detailing characteristic group frequencies of compounds from a comprehensive assortment of categories, the book includes a collection of spectra and a literature search conducted to verify existing correlations and to determine ways to enhance correlations between vibrational frequencies and molecular structure. Particular attention has been given to the correlation between Raman characteristic frequencies and molecular structure. Constitutes a necessary reference for every practicing vibrational spectroscopist Provides the new definitive text on characteristic frequencies of organic molecules Incorporates group frequencies for both infrared and Raman spectra Details the characteristic IR and Raman frequencies of compounds in more than twenty major categories Includes an extensive collection of spectra Compiled by internationally recognized experts

Download or read book Biochemical Applications of Raman and Resonance Raman Spectroscopes written by P Carey and published by Elsevier. This book was released on 2012-12-02 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biochemical Applications of Raman and Resonance Raman Spectroscopies focuses on the application of Raman and resonance Raman spectroscopies to biochemical problems. The book reviews biological systems and details the application of Raman spectroscopy to biological molecules such as proteins, nucleic acids, and lipids. It also looks at codevelopments of lasers, optics, and electronics that drive advances in experimental Raman spectroscopy, along with the important ramifications of these advances for biochemical applications. This volume is organized into eight chapters and begins with an overview of the theoretical and experimental aspects of Raman spectroscopy, including a very brief explanation of what Raman and resonance Raman spectroscopies are and a discussion of their advantages and disadvantages for biochemical studies. The explanation of the Raman and resonance Raman effects is taken up in more detail in the next chapter, which develops the concept of the vibrational motions of molecules by initially considering mechanical ""ball and spring"" models and goes on to use this concept to formulate a classical model for Raman scattering. The resonance Raman effect is then described by another model which emphasizes the discrete or quantized energy levels available to a molecule. The reader is also introduced to the experimental aspects of Raman spectroscopy and the application of Raman spectroscopy across the entire field of biochemistry. Each chapter contains an outline of the basic chemistry and biochemical nomenclature involved. This book will be of interest to chemists, biochemists, and spectroscopists, as well as graduate students and experienced research workers.

Download or read book Interpreting Infrared Raman and Nuclear Magnetic Resonance Spectra written by Richard A. Nyquist and published by Academic Press. This book was released on 2001-04-06 with total page 1103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book teaches the analyst why it is advantageous to obtain vibrational data under different physical phases. Molecular vibrations are affected by change in physical phase, and knowledge of how certain molecular vibrations are affected by change in the chemical environment improves the analyst's ability to solve complex chemical problems. This book is invaluable for students and scientists engaged in analytical and organic chemistry, since application of IR and Raman spectroscopy is essential in identifying and verifying molecular structure. This reference provides analysts with information that enables them to acquire the maximum amount of information when sampling molecular vibrations via IR and Raman spectroscopy. Key Features * Explains why it is advantageous to obtain vibrational data under different physical phases * Compiles many vibrational studies into a single compendium * Lists group frequencies in different physical phases * Reveals that some group frequencies are more affected than others by changes in the physical phase * Demonstrates that in-phase and out-of-phase vibrations of the same functional group are not equally affected * Describes how solute-solvent complexes differ with changes in the solvent system * Shows that the amount of Fermi resonance between a fundamental vibration and a combination or overtone is altered with change of physical phase * Written by an internationally recognized expert

Download or read book Resonance Raman Studies of Some Dye Molecules written by Sibo Feng and published by . This book was released on 1992 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spectroscopic Methods in Organic Chemistry written by Stefan Bienz and published by Thieme. This book was released on 2021-07-09 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boost your knowledge of modern spectroscopic methods! This reference work provides you with essential knowledge for the application of modern spectroscopic methods in organic chemistry. All methods are explained based on typical practical examples, theoretical aspects, and applications. The following spectroscopic methods are explained and examples are given: UV/Vis Spectroscopy Infrared (IR) and Raman Spectroscopy Nuclear Magnetic Resonance Spectroscopy (NMR) Mass Spectrometry (MS) The textbook has been a standard reference for decades. As it conveys necessary knowledge for examinations at all universities it is compulsory reading for every organic chemistry student!

Download or read book Resonance Raman and Time Resolved Spectroscopic Studies of Selected Chlorobenzophenone and Fluoroquinolones written by Wen Li and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Resonance Raman and Time-resolved Spectroscopic Studies of Selected Chlorobenzophenone and Fluoroquinolones" by Wen, Li, 李闻, 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: Nanosecond time-resolved resonance Raman (ns-TR3) spectroscopy was used in this thesis to study the photoreduction reactions and the photochemistry of chloro-substituted benzophenone (ClBP) triplets. The 3-chlorobenzophenone (3-ClBP), 4-chlorobenzophenone (4-ClBP) and 4,4′-dichlorobenzophenone (4,4′-diClBP) triplets exhibit similar properties to the parent BP triplet. In isopropyl alcohol (IPA), the hydrogen abstraction reactions were observed for the 3-ClBP, 4-ClBP and 4,4′-diDlBP triplets. The diphenylketyl (DPK) radicals produced from the hydrogen abstraction reactions were observed and the recombination of the DPK and dimethylketyl radicals at the para-position was observed to form a light absorption transient (LAT) species. In MeCN: H2O/1:1 aqueous solutions, these DPK radicals were also observed but with a slower formation rate and the LAT species was produced by reaction with OH radicals. Density functional theory (DFT) calculations were employed to help identify the intermediates seen in the TR3 spectra and to help provide information about the vibrational motions of the molecules examined. The 2-Cl-DPK radical was also observed in the TR3 spectra obtained in an IPA solvent. However, the yield of the 2-Cl-DPK radical and the hydrogen abstraction rate was observed to be significantly lower than that of the other ClBP examined here under the same experimental conditions. The results DFT calculations show that the 2-chloro substituent changes the geometry and the electron density of the molecular orbitals of the BP triplet so that the 2-chloro substituent reduces the hydrogen abstraction ability the triplet state, which is different the hypothesis put forward by some previous studies that an electron-withdrawing group should increase the photoreduction ability of BP derivatives. Norfloxacin (NF) and Enoxacin (EN) are representative derivatives of Fluoroquinolones (FQ). There are four forms of NF and EN and these different forms can coexist in aqueous solutions. The UV-vis absorption and resonance Raman (RR) spectra of NF and EN have been obtained in neat acetonitrile (MeCN), MeCN: HClO4-H2O/1:1 (pH?1), MeCN: H2O/1:1 (pH?7.5) and MeCN: NaOH-H2O/1:1 (pH?13) solutions. The species observed in the spectra are assigned by comparison of the experimental spectra to the DFT calculated spectra and the vibrational modes are also described from the results of the DFT calculations. The absorption spectra of NF and EN obtained in MeCN: H2O/1:1 solutions show that some other species coexist with the tautomeric forms in the neutral aqueous solution. The RR spectra of the tautomeric forms of NF and EN were obtained by subtraction of the RR spectra of the neutral and anionic forms from the RR spectra of NF and EN in neutral aqueous solutions. The results suggest that NF and EN exists in neutral, anionic and tautomeric forms in neutral aqueous solutions. The time dependant DFT calculation results suggest that the fluorine atom has little contribution to the lowest unoccupied molecular orbitals of the different forms of NF and EN. DOI: 10.5353/th_b4807974 Subjects: Benzoates Organic compounds - Spectra Photochemistry Rama

Download or read book The Handbook of Organic Compounds Three Volume Set written by Jerry Workman, Jr. and published by Elsevier. This book was released on 2000-10-18 with total page 1493 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Organic Compounds: NIR, IR, Raman, and UV-Vis Spectra Featuring Polymers and Surfactants represents a compendium of practical spectroscopic methodology, comprehensive reviews, and basic information for organic materials, surfactants, and polymer spectra covering the Ultraviolet, Visible, Near Infrared, Infrared, Raman and Dielectric measurement techniques. This set represents a complementary organic compound handbook to the Nyquist inorganic handbook, published in 1996. This set comprises the first comprehensive multi-volume handbook to provide basic coverage for UV-Vis, 4th overtone NIR, 3rd overtone NIR, NIR, Infrared, Raman spectra, and Dielectric data for common organic compounds, polymers, surfactants, contaminants, and inorganic materials commonly encountered in the laboratory. The text includes a description and reviews of interpretive and chemometric techniques used for spectral data analysis. The spectra included within the atlas are useful for identification purposes as well as pedagogical for the instruction of the various interpretive and data processing methods discussed. This work is designed to be of help to students and vibrational spectroscopists in their efforts of daily spectral interpretation and data processing of organic spectra, polymers, and surfactants. All spectra are presented in wavenumber and transmittance, with the addition of ultraviolet, visible, 4th overtone NIR, 3rd overtone NIR, and NIR spectra also represented in nanometers and absorbance space. In addition, some Horizontal infrared ATR spectra are presented in wavenumber and absorbance space. All spectra are shown with essential peaks labeled in their respective units. The material in this handbook was contributed to by several individuals, and comments were received from a variety of prominent workers in the field of molecular spectroscopy. This type of handbook project is a daunting task. This Handbook can provide a valuable reference for the daily activities of students and professionals working in modern molecular spectroscopy laboratories. * Indices for UV-Vis, fourth overtone NIR, third overtone NIR, NIR, IR, raman, and dielectric spectra * Unique detailed correlation charts for each of these spectral regions * Indices of spectra by alphabetical order, chemical class, and chemical formula * Cross referencing of common compounds for all spectral regions * Literature reviews of historical and most useful references in the field * Research oriented for those using molecular spectroscopy on a routine basis for interpretation, qualitative and quantitative analysis * An emphasis on near infrared and infrared spectral regions

Download or read book Resonance Raman and Surface Enhanced Raman Studies of Hemeproteins and Model Compounds written by Tomoyoshi Tanaka and published by . This book was released on 1987 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Organic Spectroscopy written by Lal Dhar Singh Yadav and published by Springer Science & Business Media. This book was released on 2013-08-30 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Spectroscopy presents the derivation of structural information from UV, IR, Raman, 1H NMR, 13C NMR, Mass and ESR spectral data in such a way that stimulates interest of students and researchers alike. The application of spectroscopy for structure determination and analysis has seen phenomenal growth and is now an integral part of Organic Chemistry courses. This book provides: -A logical, comprehensive, lucid and accurate presentation, thus making it easy to understand even through self-study; -Theoretical aspects of spectral techniques necessary for the interpretation of spectra; -Salient features of instrumentation involved in spectroscopic methods; -Useful spectral data in the form of tables, charts and figures; -Examples of spectra to familiarize the reader; -Many varied problems to help build competence ad confidence; -A separate chapter on ‘spectroscopic solutions of structural problems’ to emphasize the utility of spectroscopy. Organic Spectroscopy is an invaluable reference for the interpretation of various spectra. It can be used as a basic text for undergraduate and postgraduate students of spectroscopy as well as a practical resource by research chemists. The book will be of interest to chemists and analysts in academia and industry, especially those engaged in the synthesis and analysis of organic compounds including drugs, drug intermediates, agrochemicals, polymers and dyes.

Download or read book Resonance Raman Studies of Selected Di Tri And Tetra isocyano Rhenium i Diimine Complexes written by Shun-Cheung Cheng 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 Studies of Selected DI-, TRI- and Tetra(isocyano) Rhenium(i) Diimine Complexes" by Shun-cheung, Cheng, 鄭信祥, 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 titled RESONANCE RAMAN STUDIES OF SELECTED DI-, TRI- AND TETRA(ISOCYANO) RHENIUM(I) DIIMINE COMPLEXES submitted by Shun Cheung CHENG for the Degree of Doctor of Philosophy at The University of Hong Kong in May 2014 The ground state and excited state properties of 1,10-phenanthroline and various di(isocyano) t i i (R= Bu, 2,6- Pr C H ), tri(isocyano) (R=4-ClC H, 4-ClC H, 2,6- Pr C H ) and tetra(isocyano) 2 6 3 6 4 6 4 2 6 3 (R=2,6- Pr C H, 4-Br-2,6-MeC H, 4-IC H ) rhenium(I) diimine complexes have been studied 2 6 3 6 4 6 4 by resonance Raman spectroscopy. The absolute Raman cross-sections of major bands of the complexes in acetonitrile solution under various excitation wavelengths were reported and the resonance Raman excitation profiles of different modes of the complexes showed large variations with different excitation wavelengths. The vibrational frequencies of the complexes were assigned by the Density Functional Theory (DFT) calculations and the experimental and calculated frequencies were shown to be in good match. Differences of the ground state structures among the complexes were highlighted, particularly on the presence of various low- energy conformers of the 4-halophenyl isocyano complexes. Also, open-shell DFT calculations were employed to the optimization of the first triplet state of the complexes. The emission energies of the complexes were close to the triplet-singlet gaps calculated by DFT method, and there are substantial structural changes between the optimized ground and triplet states of the complexes. The absorption wavelengths and intensities of several complexes in acetonitrile were consistent to the time-dependent density functional theory (TDDFT) calculations. Besides, a combined DFT and TD-DFT method is utilized to predict the resonance Raman intensities of 1,10-phenanthroline and di(isocyano) complexes using short-time approximation, and it compares well with the experimental results of the three compounds under several excitation wavelengths. DOI: 10.5353/th_b5351016 Subjects: Complex compounds - Spectra Organorhenium compounds - Spectra Raman spectroscopy

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 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analytical Raman Spectroscopy written by Jeanette G. Grasselli and published by Wiley-Interscience. This book was released on 1991-09-10 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological Applications of Raman Spectroscopy Volume 1: Raman Spectra and the Conformations of Biological Macromolecules Edited by Thomas G. Spiro The first of the landmark volumes focusing on biological Raman applications, Volume 1 provides an incisive look at the current research surrounding the conformations of biological macromolecules. Volume 1 considers the varieties of macromolecules—proteins, nucleic acids, and lipids—in isolation and in the organized biological assemblies of ocular lenses, viruses, and membranes. The collective vibrational modes of macromolecules are considered theoretically, and there is a review of the promising area of vibrational optical activity. 1987 (0 471-81573-X) 352 pp. Volume 2: Resonance Raman Spectra of Polyenes and Aromatics The importance of the resonance Raman effect for biological applications is that it can provide dramatically increased sensitivity and selectivity The theory of the effect is presented in Volume 2, which also explores applications to rhodopsin, to the purine and pyrimidine bases of nucleic acids, to the peptide backbone and chromophoric side chains of proteins, to flavins, and, finally, to the introduction of resonance Raman labels into biological systems. 1987 (0 471-81574-8) 367 pp. Volume 3: Resonance Raman Spectra of Heme and Metalloproteins Heme proteins have provided an especially rich opportunity for Raman studies. Volume 3 describes in detail various aspects of work in this area, including applications to chlorophylls and nonheme metalloproteins. Coverage includes heme protein structure and the iron-histidine stretching mode; Raman scattering by cytochrome oxidase and by heme a model compounds; chlorophylls and the photosynthetic membrane; resonance Raman spectroscopy of blue copper proteins; and nonheme respiratory proteins. 1988 (0 471-81575-6) 565 pp.