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- Infrared (IR) Spectroscopy
Spectroscopy Data and Information : Infrared (IR) Spectroscopy
Where to find IR, NMR, and other spectral data online and in our print collection
Books with IR Spectral Data
- Aldrich library of FT-IR spectra by Pouchert, Charles J.Call Number: QD96 I5 P66 1985 ReferencePublication Date: c1985-1989
- Handbook of natural products data: Diterpenoid and Steroidal Alkaloids by Atta-ur RahmanCall Number: QD 415.7 R34 1990 1Publication Date: 1990
- Handbook of organic compounds : NIR, IR, Raman, and UV-Vis spectra featuring polymers and surfactants by Workman, JerryCall Number: QC462.85 H36 2001Publication Date: 2001
- Infrared spectra of inorganic compounds (3800-45cm⁻¹) by Nyquist, Richard A.Call Number: QC457 N93 1971Publication Date: 1971
- Raman/infrared atlas of organic compounds. 2nd ed. by Schrader, BernhardCall Number: QD272 S6 S3713 1989Publication Date: 1989
- Roth collection of natural products data : concise descriptions and spectra by Roth, Lutz & Rupp, GabrieleCall Number: QD 415 R845r 1995Publication Date: 1995
- Sadtler Spectra collections and indices. Standard IR grating spectraCall Number: Chemistry Reference: Green binders
- Spectra for the identification of additives in food packaging by Lierop, Ben van. (et. al.)Call Number: TP374 S65 1998Publication Date: 1998
- Spectral data for PCBs by Sutton, M.L.; Frenkel, Michael; Marsh, K.N.Call Number: QD412 C5 S64 1994Publication Date: 1994
- Spectroscopic data of saponins : the triterpenoid glycosides by Ahmad, Viqar UddinCall Number: QC463 C3 A46 2000Publication Date: 2000
- TRC spectral data. Infrared by Thermodynamics Research Center, Texas A & M University SystemCall Number: QC457 A552Publication Date: 1985-2000
Characteristic IR Band Positions
Group | Frequency Range (cm-1) |
OH stretching vibrations | |
Free OH | 3610-3645 (sharp) |
Intramolecular H bonds | 3450-3600 (sharp) |
Intermolecular H Bonds | 3200-3550 (broad) |
Chelate Compounds | 2500-3200 (very broad) |
NH Stretching vibrations | |
Free NH | 3300-3500 |
H bonded NH | 3070-3350 |
CH Stretching vibrations | |
=-C-H | 3280-3340 |
=C-H | 3000-3100 |
C-CH3 | 2862-2882, 2652-2972 |
O-CH3 | 2815-2832 |
N-CH3 (aromatic) | 2810-2820 |
N-CH3 (aliphatic) | 2780-2805 |
CH2 | 2843-2863,2916-2936 |
CH | 2880-2900 |
SH Stretching Vibrations | |
Free SH | 2550-2600 |
C=-N Stretching Vibrations | |
Nonconjugated | 2240-2260 |
Conjugated | 2215-2240 |
C=-C Stretching Vibrations | |
C=-CH (terminal) | 2100-2140 |
C-C=-C-C | 2190-2260 |
C-C=-C-C=-CH | 2040-2200 |
C=O Stretching Vibrations | |
Nonconjugated | 1700-1900 |
Conjugated | 1590-1750 |
Amides | ~1650 |
C=C Stretching Vibrations | |
Nonconjugated | 1620-1680 |
Conjugated | 1585-1625 |
CH Bending Vibrations | |
CH2 | 1405-1465 |
CH3 | 1355-1395, 1430-1470 |
C-O-C Vibrations in Esters | |
Formates | ~1175 |
Acetates | ~1240, 1010-1040 |
Benzoates | ~1275 |
C-OH Stretching Vibrations | |
Secondary Cyclic Alcohols | 990-1060 |
CH out-of-plane bending vibrations in substituted ethylenic systems |
|
-CH=CH2 | 905-915, 985-995 |
-CH=CH-(cis) | 650-750 |
-CH=CH-(trans) | 960-970 |
C=CH2 | 885-895 |
Table from ALS website
Introduction to IR Spectroscopy
Introduction to Experimental Infrared Spectroscopy - Fundamentals and Practical Methods by Mitsuo Tasumi Infrared spectroscopy is generally understood to mean the science of spectra relating to infrared radiation, namely electromagnetic waves, in the wavelength region occurring intermediately between visible light and microwaves. Measurements of infrared spectra have been providing useful information, for a variety of scientific research and industrial studies, for over half a century; this is set to continue in the foreseeable future. Introduction to Experimental Infrared Spectroscopy is intended to be a handy guide for those who have no, or limited, experience in infrared spectroscopic measurements but are utilising infrared-related methods for their research or in practical applications. Written by leading researchers and experienced practitioners, this work consists of 22 chapters and presents the basic theory, methodology and practical measurement methods, including ATR, photoacoustic, IR imaging, NIR, 2D-COS, and VCD. The six Appendices will aid readers in understanding the concepts presented in the main text. Written in an easy-to-understand way this book is suitable for students, researchers and technicians working with infrared spectroscopy and related methods.
Call Number: ebookPublication Date: 2015
Websites and Databases with IR Data
- NIST WebBookContains: IR spectra for over 16,000
Mass spectra for over 33,000 compounds
UV/Vis spectra for over 1600 compounds