Infrared and Raman Spectroscopy: Principles and Spectral InterpretationInfrared and Raman Spectroscopy: Principles and Spectral Interpretation explains the background, core principles and tests the readers understanding of the important techniques of Infrared and Raman Spectroscopy. These techniques are used by chemists, environmental scientists, forensic scientists etc to identify unknown chemicals. In the case of an organic chemist these tools are part of an armory of techniques that enable them to conclusively prove what compound they have made, which is essential for those being used in medical applications. The book reviews basic principles, instrumentation, sampling methods, quantitative analysis, origin of group frequencies and qualitative interpretation using generalized Infrared (IR) and Raman spectra. An extensive use of graphics is used to describe the basic principles of vibrational spectroscopy and the origins of group frequencies, with over 100 fully interpreted FTIR and FTRaman spectra included and indexed to the relevant qualitative interpretation chapter. A final chapter with forty four unknown spectra and with a corresponding answer key is included to test the readers understanding. Tables of frequencies (peaks) for both infrared and Raman spectra are provided at key points in the book and will act as a useful reference resource for those involve interpreting spectra. This book provides a solid introduction to vibrational spectroscopy with an emphasis placed upon developing critical interpretation skills. Ideal for those using and analyzing IR and Raman spectra in their laboratories as well as those using the techniques in the field.

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These regions can be roughly divided as follows: • XeH stretch (str) highest frequencies (3700e2500 cmÀ1) • XhY stretch, and cumulated double bonds X1⁄4Y1⁄4Z asymmetric stretch (2500e2000 cmÀ1) ... typically involve coupled vibrations.
... n is in waves per centimeter and is sometimes called the frequency in cmÀ1 and c is the speed of light in cm/s. ... the bond energy of a two atom bond (see Table 2.1) 2. the atomic masses of the two atoms involved in the vibration.
4000e400 cmÀ1, and the farIR region is 400e10 cmÀ1. Typical of an absorption spectroscopy, ... This is the familiar selection rule for IR spectroscopy, which requires a change in the dipole moment during the vibration to be IR active.
The normal coordinate computation involves calculation of the vibrational frequencies (i.e., eigenvalues) as well as the atomic ... are li's defined as: li 1⁄4 4p2c2 vÀ2i Where the frequency in cmÀ1 of the ith normal mode is n2i.
... 512, or 1064 pixels) are present in commercially available detector elements compared to the number of resolvable spectral elements. Thus, to cover the entire spectral range (4000e400 cmÀ1) requires either lowresolution spectrum ...
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Table des matières
1  
7  
27  
Chapter 4 Environmental Dependence of Vibrational Spectra  55 
Chapter 5 Origin of Group Frequencies  63 
Characteristic Group Frequencies  73 
Chapter 7 General Outline and Strategies for IR and Raman Spectral Interpretation  117 
Chapter 8 Illustrated IR and Raman Spectra Demonstrating Important Functional Groups  135 
Chapter 9 Unknown IR and Raman Spectra  177 
Appendix IR Correlation Charts  213 
Index  217 
Autres éditions  Tout afficher
Infrared and Raman Spectroscopy: Principles and Spectral Interpretation Peter Larkin Aucun aperçu disponible  2017 
Infrared and Raman Spectroscopy: Principles and Spectral Interpretation Peter J. Larkin Aucun aperçu disponible  2011 