Topic: Eugenol IR Spectrum
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Answers to Common Questions
How to Read IR Spectrums
An infrared (IR) spectrum shows what functional groups are present in an organic molecule. In IR spectroscopy, a molecule is irradiated with electromagnetic radiation. The molecule absorbs energy if the frequency of the radiation matches th... Read More »
Source: http://www.ehow.com/how_6809192_read-ir-spectrums.html?ref=Track2...
What are Overtones in IR Spectrums?
IR transitions occur usually from ground state to first excited state (fundamental band) the overtones (theoretically forbidden) are transitions from ground state to the second excited level, and occur near to double wavenumber in respect t... Read More »
Source: http://answers.yahoo.com/question/index?qid=20080416184757AA7vukO
Why are UV spectrum peaks broad where as IR spectra show sharp pe...
UV-visible absorption spectroscopy probes electronic transitions due to electronic excited states, where as absorption of IR radiation excites molecular vibrations and no electronic excited states. However, UV-visible radiation can also exc... Read More »
Source: http://wiki.answers.com/Q/Are_st_lucia's_most_famous_peaks_called...
More Common Questions
Answers to Other Common Questions
That's the infrared spectrum - which is a type of light (just like visible light that you see). It's just one small part of the entire electromagnetic spectrum (which again, visible light is also part of). IR has a slightly longer wavelengt...
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Source: http://answers.yahoo.com/question/index?qid=20090531175335AALCiWX
"same functional groups" means that the you're going straight for the so-called "fingerprint region", typically given as 1200 to 600 cm-1. The pattern of bands in this range is nearly unique, and will certainly allow you to pick from a list...
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Source: http://answers.yahoo.com/question/index?qid=20080922110221AAp8hyN
λ ^-1 = wavenumber .: λ =1/(wavenumber) 4400 cm-1 λ =1/(4400 cm^-1) = 2.273 *10^-4 cm 2.273*10^-6 m =2.273 μm 650 cm-1 λ =1/(650 cm^-1) = 1.54 *10^-3 cm 15.4*10^-6 m =15.4 μm (So you are correct, and so am I!) E = h*c/λ Planck constant h = ...
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Source: http://answers.yahoo.com/question/index?qid=20091023065437AA2GigK
Should be near 1650 wavenumbers.
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Source: http://www.chacha.com/question/where-would-a-carbon-carbon-double...
You scan the wavelength from high to low - and identify the MAJOR peaks. The are too many minor peaks, and most of the times it is impossible to identify ALL the peaks (especially at lower wavelength) in an IR, what is important is identify...
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Source: http://answers.yahoo.com/question/index?qid=20071204084525AAu7eQG
The compound has a broad absorption at ~3300 cm-1 indicative of O-H...H H-bonds (ν(O-H)) only cmpds 1, 2 have have this possibility. There is a whopping absorption at ~1700 cm-1 characteristic of ν(C=O). Only cmpd 1 has both groupings. (Pla...
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Source: http://answers.yahoo.com/question/index?qid=20091003164409AAGAQEG
http://colapret.cm.utexas.edu/courses/Sp… use this chart to find the correct formula of the compound.
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Source: http://answers.yahoo.com/question/index?qid=20100202191656AAt6niO
