Abstract
IT has been suggested that Rayleigh and Raman scattered light from optically active molecules should show polarization effects which could provide new information about their structure and configuration1–3. Circular intensity differentials (CIDs) defined by2
where IR and IL are the scattered intensities in right and left circularly polarized incident light, have recently been observed in the Raman spectra of α-phenylethanol and α-phenylethylamine4. (Raman CID was first reported by Bosnich et al.5, using α-phenylethylamine, but it has been suggested that the results are spurious4.) Observations now reported on another liquid, α-phenylethylisocyanate, could indicate that these differentials originate in bending vibrations around the asymmetric carbon atom.
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References
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BARRON, L., BOGAARD, M. & BUCKINGHAM, A. Differential Raman Scattering of Right and Left Circularly Polarized Light by Asymmetric Molecules. Nature 241, 113–114 (1973). https://doi.org/10.1038/241113a0
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DOI: https://doi.org/10.1038/241113a0
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