光谱学与光谱分析 |
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Raman Scattering Study of DL-Alanine |
GONG Yan,WANG Wen-qing |
Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China |
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Abstract Studies of Raman vibration spectra are useful to obtaining information on biomolecular crystals. The cell dimensions of the L- and DL-alanine crystals are nearly identical, and both structures belong to the orthorhombic system, but the space group is P212121 for the L-isomer, and Pna21 for the racemate crystal. The Raman spectrum of L-alanine has been measured by many authors. The present work is focusing on the Raman scattering study of DL-alanine powder. Based on the analysis of the differences between DL-alanine and L-alanine Raman spectra, the authors obtained indispensable information on hydrogen bond and the motion of the molecular conformation in alanine crystals.
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Received: 2004-12-08
Accepted: 2005-03-28
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Corresponding Authors:
GONG Yan
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