t1mmaas Posted October 30, 2013 Share Posted October 30, 2013 Hello!How H-bonds effect on Raman spectra? Can we determine are there H-bonds in molecule with Raman spectra? Link to comment Share on other sites More sharing options...
hypervalent_iodine Posted October 30, 2013 Share Posted October 30, 2013 Is this a homework question? Link to comment Share on other sites More sharing options...
t1mmaas Posted October 30, 2013 Author Share Posted October 30, 2013 Is this a homework question? Yes, I'm studying english language, and one of the task was to ask a question at this forum. However i would be very grateful if you recommend me some references (= Link to comment Share on other sites More sharing options...
imatfaal Posted October 30, 2013 Share Posted October 30, 2013 Hello! How H-bonds effect on Raman spectra? Can we determine are there H-bonds in molecule with Raman spectra? Ok. So I cannot answer your question - it is too advanced for me. But I can give you a few hints on the wording How do H-bonds effect a Raman Spectrum? Can we determine if there are H-bonds in a molecule using Raman Spectroscopy? Link to comment Share on other sites More sharing options...
AbeMichelson Posted December 23, 2013 Share Posted December 23, 2013 The answer is yes, if you have a good enough spectrometer. Hydrogen bonding changes the bond length of the -O-H bond, thus changes the energy required to vibrate the bond (stretch). The shifts are usually <20cm-1, so the spectrometer needs to have good resolution (Raman spectral resolution is typically poorer than IR). Another roadblock is that the OH stretching mode is very weak in Raman (that's why you can do Raman in aqueous solutions!). Sensitivity/Laser power will be an important factor. Personally, I'd go IR over Raman for this kind of information. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now