Infrared and Raman Spectroscopy: Principles and Spectral Interpretation

Couverture
Elsevier, 13 juil. 2011 - 230 pages

Infrared 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 FT-IR and FT-Raman 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.

  • Uniquely integrates discussion of IR and Raman spectra
  • Theory illustrated and explained with over 100 fully interpreted high quality FT-IR and FT-Raman spectra (4 cm-1 resolution)
  • Selected problems at the end of chapters and 44 unknown IR and Raman spectra to test readers understanding (with a corresponding answer key)

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Page 34
... Nujol mull preparation of powdered starch provides an unacceptably poor quality FT-IR spectrum and a so-called false spectrum. A broadening of the most intense bands and a strengthening of the weak bands characterize false IR spectra ...
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... Nujol mull N N 600 3500 3000 2500 2000 1800 1600 1400 1200 1000 800 Wavenumber (cm–1) 100 80 cell, which can vary in ... Nujol Mull. The N marks the Nujol bands. 1800 1700 1600 1500 1400 1300 1200 1100 1000 900. SAMPLING METHODS FOR ...
Page 37
... NUJOL MULL A Nujol mull involves mixing of mineral oil and finely ground sample to form a paste, which is then sandwiched, between two IR transmitting windows (typically KBr or NaCl). In general, 30e50 mg of sample is needed for this ...
Page 38
... Nujol and Fluorolube. The Nujol spectrum is shown as a solid line and the Fluorolube spectrum is shown as a dotted ... mull. However, the KBr disc method does have some disadvantages compared to a mull. KBr is very hygroscopic and some ...
Page 54
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Table des matières

Infrared and Raman Spectroscopy
1
Chapter 2 Basic Principles
7
Chapter 3 Instrumentation and Sampling Methods
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
Droits d'auteur

Autres éditions - Tout afficher

Infrared and Raman Spectroscopy: Principles and Spectral Interpretation
Peter Larkin
Aperçu limité - 2017
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

Expressions et termes fréquents

¼O str 400 Wavenumber absorption Aliphatic Aliphatic group amine aromatic ring aryl Aryl CH str aryl ring atom bend CH benzene C=O str C¼C C¼O capillary film/KBr carbon carbonyl carboxylic acid CH stretch CH wag CH2 bend CH3 o.ph cmÀ1 cmÀ1 involves cmÀ1 region cme1 cmL1 compounds deformation dipole electron energy Fermi resonance FIGURE force constant FT-IR FT-Raman hydrogen bonding i.ph in-phase stretch in-plane intensity IR bands KBr disc linear lone H methyl methylene molecule near-IR Neat/cap film Nujol Nujol mull observed olefinic oscillator out-of-phase stretch photon Pyridine Quadrant str radiation Raman scattered Raman spectra Raman spectroscopy refractive Ring Quad ring stretch rotational sample preparation Semi-circle str shown in Fig spectrum stretching bands stretching frequencies stretching vibrations strong IR bands strong Raman band substituent sulfonic acid symmetry technique trans typically vibrational spectroscopy wavelength Wavenumber Wavenumber cm–1 weak

À propos de l'auteur (2011)

Peter J. Larkin leads Solvay's Spectroscopy and Materials Characterization group based in Stamford, Connecticut. He has more than 25 years of experience using IR, Raman, and NIR spectroscopy in the chemical and pharmaceutical industry. This includes managing research groups in R&D environments as well as directing analytical method development, validation, and transfer teams. He specializes in IR and Raman spectral interpretation, spectroscopic chemometric analyses, early phase API and chemical development support, and process analytical techniques (PAT). Dr. Larkin received his PhD from the University of Pittsburgh in 1990 using resonance Raman and vibrational circular dichroism spectroscopy to study heme proteins. Since that time he has worked in analytical departments both in the specialty chemical and pharmaceutical industries. While at American Cyanamid/Cytec Industries in Stamford, CT, Larkin received comprehensive training in IR interpretation from Dr. Norman B. Colthup. He subsequently worked at Wyeth Pharmaceutical, had a brief stint with Pfizer, lead the solid state analysis group at Bristol-Myers Squibb, and now leads the spectroscopy and materials characterization group at Solvay.

Informations bibliographiques

TitreInfrared and Raman Spectroscopy: Principles and Spectral Interpretation
AuteurPeter Larkin
ÉditeurElsevier, 2011
ISBN0123870186, 9780123870186
Longueur230 pages
  
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