Resonant frequency of Volatile organic compounds

[Sveral]

Hello ,
could someone tell me ,where to find Resonant frequency of the chemical bond of the following Volatile organic compounds:
Propene,Toluene,Benzene,Ethylbenzene.
Thanks in advance .

 

[hilbert2]

You could try to find IR spectra of those compounds and see what bonds the spectral peaks are assigned to, in case you mean vibrational frequencies.

 

[Sveral]

Yes, you put it more accurately, any idea as tom where one can find a chart with these frequencies? Also, is there a difference in the vibrational frequency of a volatile organic compound and a non-volatile one, for example, propene?

 

[HAYAO]

Well, quick google in google images with the keywords "*compound name* IR spectrum" gave my IR spectrum for all of the compounds you mentioned.

 

[Sveral]

Well, quick google in google images with the keywords "*compound name* IR spectrum" gave my IR spectrum for all of the compounds you mentioned.

Thank you ,will remember that .

 

[HAYAO]

Thank you ,will remember that .

Well, quick google in google images with the keywords "*compound name* IR spectrum" gave my IR spectrum for all of the compounds you mentioned.

I'm sorry, I made a bad typo. It was supposed to be "gave me" not "gave my". Big difference that could've got you confused. Just so you know.

 

[Sveral]

I'm sorry, I made a bad typo. It was supposed to be "gave me" not "gave my". Big difference that could've got you confused. Just so you know.

Didn`t really notice that one, just read it as "me" anyways:D Could anyone explain to me, wheather or not resonance can be created by continuously applying a photon flux , which when reaches the total energy of the bond will break it?

 

[HAYAO]

Could anyone explain to me, whether or not resonance can be created by continuously applying a photon flux , which when reaches the total energy of the bond will break it?

I have to clear up several things before I can answer your question. Some of what I say below, you might know, so you can just tell me whether you know or not.

1) Bond does not dissociate when a molecule absorbs energy corresponding to the bonding mode (resonance). You have just simply excited the molecule to a higher phonon level.

2) There is a difference between photon flux and photon energy. The former essentially refers to how many photons will be in a unit time and unit area (typically given in W/mm²). The latter refers to the energy a single photon itself has (units in wavelength, wavenumber, or eV...sometimes in frequency).

3) Continuous application of a photon beam only increases the number of molecule excited to a higher phonon level. Theoretically, it is possible to doubly excite a single molecule when using high intensity beams (like lasers), but the possibility of the phonon excited molecule deactivating is significantly higher than absorbing two photons.

With that said, can you rephrase your question? Or does this already answers it?

I am wondering. Are you talking about electronic excited state or vibration excited state? What we've talked about so far is the vibration excited state. But bond dissociation by absorption of a photon usually involves electronic excited state.

 

[Sveral]

I have to clear up several things before I can answer your question. Some of what I say below, you might know, so you can just tell me whether you know or not.

1) Bond does not dissociate when a molecule absorbs energy corresponding to the bonding mode (resonance). You have just simply excited the molecule to a higher phonon level.

2) There is a difference between photon flux and photon energy. The former essentially refers to how many photons will be in a unit time and unit area (typically given in W/mm²). The latter refers to the energy a single photon itself has (units in wavelength, wavenumber, or eV...sometimes in frequency).

3) Continuous application of a photon beam only increases the number of molecule excited to a higher phonon level. Theoretically, it is possible to doubly excite a single molecule when using high intensity beams (like lasers), but the possibility of the phonon excited molecule deactivating is significantly higher than absorbing two photons.

With that said, can you rephrase your question? Or does this already answers it?

I am wondering. Are you talking about electronic excited state or vibration excited state? What we've talked about so far is the vibration excited state. But bond dissociation by absorption of a photon usually involves electronic excited state.

Ok, fair enough. I think, that the best option would be to simply quote the text I am talking about, but, please, do not ask for the entire document, that I simply can not do. the quote "
The desorption yield peaked at a wavelength
of 4.8 mm (Fig. 1B), corresponding to
0.26 eV, the energy of the vibrational stretch
mode of the Si-H bond at the terrace sites of the
Si(111) surface.
"

 

[HAYAO]

Ok, fair enough. I think, that the best option would be to simply quote the text I am talking about, but, please, do not ask for the entire document, that I simply can not do. the quote "
The desorption yield peaked at a wavelength
of 4.8 mm (Fig. 1B), corresponding to
0.26 eV, the energy of the vibrational stretch
mode of the Si-H bond at the terrace sites of the
Si(111) surface.
"

You are referring to the article in Science:
http://science.sciencemag.org/content/312/5776/1024

This paper was retracted in 2011 because they were unable to reproduce the results. I'm not surprised because I have never heard of dissociation of bond by resonant infrared light. I am quite skeptical of this phenomenon. If it is possible, then it must be of an indirect process(es). I may be proven wrong in the future, but for now you'll have to provide me with a legitimate article.

 

[Sveral]

You are referring to the article in Science:
http://science.sciencemag.org/content/312/5776/1024

This paper was retracted in 2011 because they were unable to reproduce the results. I'm not surprised because I have never heard of dissociation of bond by resonant infrared light. I am quite skeptical of this phenomenon. If it is possible, then it must be of an indirect process(es). I may be proven wrong in the future, but for now you'll have to provide me with a legitimate article.

True, but for now that is not yet possible, that, as far as I know, is the only work of it`s kind, that`s the problem...

 

[HAYAO]

True, but for now that is not yet possible, that, as far as I know, is the only work of it`s kind, that`s the problem...

I'm sorry, but now your question doesn't make sense. What is "the problem" you are talking about? What are you trying to ask?