Infrared spectroscopy - Wikipedia, the free encyclopedia
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Infrared spectroscopy (IR spectroscopy) is the subset of spectroscopy that deals with the infrared region of the electromagnetic spectrum. It covers a range of techniques, the most common being a for...
en.wikipedia.org/wiki/Infrared_spectroscopy
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Select an unknown and determine as much as you can about its structure from the infrared spectrum. A helpful table of characteristic IR frequencies can be found below ... For steps to follow in the analysis of an infrared spectrum select this link ----> Quick Infrared Analysis...
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wwwchem.csustan.edu/Tutorials/INFRARED.HTM
wwwchem.csustan.edu/Tutorials/INFRARED.HTM
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Infrared light lies between the visible and microwave portions of the electromagnetic spectrum. Infrared light has a range of wavelengths, just like visible light has wavelengths that range from red light to violet.
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science.hq.nasa.gov/kids/imagers/ems/infrared.html
science.hq.nasa.gov/kids/imagers/ems/infrared.html
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Figure 6 Infrared spectrum of Carbon Dioxide ... The symmetric stretch is not infrared active, and so this vibration is not observed in the infrared spectrum of CO2. The two equal-energy bending vibrations in CO2 (C and D in Figure 4) are identical except that one bending mode is in the plane of the paper, and one is out of...
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www.wag.caltech.edu/home/jang/genchem/infrared.htm
www.wag.caltech.edu/home/jang/genchem/infrared.htm
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The general regions of the infrared spectrum in which various kinds of vibrational bands are observed are outlined in the following chart. Note that the blue colored sections above the dashed line refer to stretching vibrations, and the green colored band below the line encompasses bending vibrations.
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www.cem.msu.edu/~reusch/VirtualText/Spectrpy/InfraRed/i...
www.cem.msu.edu/~reusch/VirtualText/Spectrpy/InfraRed/infrared.htm
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This is because most of the radio part of the EM spectrum falls in the range from about 1 cm to 1 km (30 gigahertz (GHz) to 100 kilohertz (kHz)). The radio is a very broad part of the EM spectrum. Infrared astronomers also use wavelength to describe their part of the EM spectrum.
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imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.h...
imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html
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For organic molecules, the infrared spectrum can be divided into three regions. Absorptions between 4000 and 1300 cm-1 are primarily due to specific functional groups and bond types. Those between 1300 and 909 cm-1, the fingerprint region, are primarily due to more complex vibrational motions;
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www.wpi.edu/Academics/Depts/Chemistry/Courses/General/i...
www.wpi.edu/Academics/Depts/Chemistry/Courses/General/infrared.html
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An infrared spectrum of a chemical substance, is very much like a photograph of a molecule. However, unlike a normal photograph which would reveal the position of nuclei, the infrared spectrum will only reveal a partial structure.
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www.umsl.edu/~orglab/documents/IR/IR2.html
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The atmospheric window (800 to 1200 cm ) is the most transparent region in the spectrum. Measurements between water vapor lines within the atmospheric window (referred to as `microwindows' and tabulated in Appendix A) yield observations with the least atmospheric contamination.
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lidar.ssec.wisc.edu/papers/dhd_thes/node3.htm
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