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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The spring constant is K, the masses are m1 and m2, and X1 and X2 are the displacement vectors of each mass from equilibrium where the oscillator is assumed to be harmonic. photon cycle FIGURE 2.8 The oscillating electric field of the.
If the masses are expressed in unified atomic mass units (u) and the force constant is expressed in millidynes/A ̊ngstro ̈m then: n 1⁄4 1303 ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi K 1m1 þ 1 ...
Here Xe is at the energy minimum and the force constant, K is a measure of the curvature of the potential well near Xe. From quantum mechanics we know that molecules can only exist in quantized energy states. Thus, vibrational energy is ...
Based upon a complete set of force constants a matrix, F, is constructed which is related to the molecular vibrational potential energy. A basis set is selected that is capable of describing all possible internal atomic displacements ...
The force constant fij is defined as the second derivative of the potential energy with respect to the coordinates qi and qj in the ... In order to obtain the molecular force field with the force constants given by the above equation, ...
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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 