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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In (a) the incident radiation makes the induced dipole moment of the molecule oscillate at the photon frequency. In (b) the molecular ... Symmetry elements include planes of symmetry, axes of symmetry, and a center of symmetry.
These include those for a plane of symmetry, a twofold rotational axis of symmetry, and an identity operation (needed for group theory) which makes no change. If a molecule is symmetrical with respect to a given symmetry element, ...
1 2 1 1 1 Before (a) (b) 1 (c) 1 1 (d) After Identity operation, (no change) Twofold axis of rotation, C 2 (rotate 180o on axis) Plane of symmetry, V (reflection in mirror plane) Plane of symmetry, /V (reflection in molecular plane) 3 ...
the dipole moment change in Q1 and Q2 is parallel to the C2 axis and in Q3 it is perpendicular to the C2 axis and the sv, plane. Doubly degenerate modes occur when two different vibrational modes have the same vibrational frequency as a ...
The parameter k is directly related to the extinction coefficient found in the LamberteBeer law. ... In general, theories to describe the diffuse reflectance phenomena consider planeparallel layers within the sample with light ...
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Table des matières
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7  
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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 