Dear Sir. Concerning your issue about the standard refernce values for vibrational frequencies of FTIR and raman. I think the following below links and the attached file may help you in your study:

http://nvlpubs.nist.gov/nistpubs/Legacy/NSRDS/nbsnsrds39.pdf http://nvlpubs.nist.gov/nistpubs/Legacy/NSRDS/nbsnsrds17.pdf

http://nopr.niscair.res.in/bitstream/123456789/13297/1/IJPAP%2050%281%29%2019-25.pdf

Thanks

Thank you Sir the documents are really informative. Sir, Can we study noncovalent interactions like hydrogen bonding, vander walls interactions, pi-pi stacking, etc by vibrational spectroscopy?

In terms of your follow-up question regarding noncovalent interactions - in a simple model of the vibrational oscillations, the frequency is proportional to the square root of bond strength/effective mass. Hydrogen/van der Waals, etc. intermolecular bonds are relatively weak, and bond large molecules, and therefore the frequencies are very low (

1. Modern Raman Spectroscopy– A Practical Approach, Ewen Smith and Geoffrey Dent

2. Introduction to Infrared and Raman Spectroscopy, Norman B. Colthup, Lawrence H. Daly and Stephen E. Wiberley

are two useful book.

However, The position of Raman and IR band frequencies are the same only the intensities are quite different. The intensities are related to the symmetry of vibration, polarity of band, and populations of chemical bands.

Thank you Sir for information...

Looking for high quality gas phase infrared spectra for atmospheric monitoring or for other purpose ?

Check out the EUROCHAMP-2020 database ! Spectra of hundreds of gaseous species are freely searchable and downloadable : https://data.eurochamp.org

Looking for high quality gas phase infrared spectra for atmospheric monitoring or for other purpose ?

Check out the EUROCHAMP-2020 database ! Spectra of hundreds of gaseous species are freely searchable and downloadable.

https://data.eurochamp.org

Looking for high quality gas phase infrared spectra for atmospheric monitoring or for other purpose ?

Check out the EUROCHAMP-2020 database !

Spectra of hundreds of gaseous species are freely searchable and downloadable.

https://data.eurochamp.org