Rotational Isomers Often two closely spaced C=O absorption peaks are observed for these conjugated systems, resulting from two possible conformations, the s-cis and s-trans. The s-cis conformation absorbs at a higher frequency than the s-trans conformation. In some cases, the C=O absorption ...
today in the lecture our professor explained to us how FTIR spec works. Correct me if I am wrong but you use the sin and cosine functions to map out the wavelength you are measuring and essentially, it is able to detect via mathematical treatment the peaks (which are not the noise, they...
(high intensity, same wavelength as excitation) a series of Stokes-shifted peaks (low intensity, longer wavelength) a series of anti-Stokes shifted peaks (still lower intensity, shorter wavelength) spectrum independent of excitation wavelength (488, 632.8, or 1064 nm) Spectrum of CCl4, using an...