Abstract
Single crystal samples of L-leucine, C6H13NO2, a fundamental aliphatic
amino acid of the human body, have been studied by Raman spectroscopy at
temperatures from 300 to 430 K over the spectral range from 50 to 3100
cm(-1). A tentative assignment of all bands is given. For high
temperatures, several modifications on the Raman spectra were observed
at about 353 K, giving evidence that the L-leucine crystal undergoes a
structural phase transition. An interpretation for this phase transition
in terms of group theory analysis is given.
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