Hydrogen-bonding interactions in fully deuterated α-glycine at high pressures

Sharma, Bharat Bhooshan ; Murli, Chitra ; Chitra, R. ; Sharma, Surinder M. (2012) Hydrogen-bonding interactions in fully deuterated α-glycine at high pressures Journal of Raman Spectroscopy, 43 (1). pp. 138-145. ISSN 0377-0486

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/jrs.299...

Related URL: http://dx.doi.org/10.1002/jrs.2994

Abstract

Recent spectroscopic investigations of various amino acids report intriguing high-pressure and low-temperature behavior of NH3+ groups and their influence on various hydrogen bonds in the system. In particular, the variation of the intensity of NH3+ torsional mode at different temperatures and pressures has received much attention. We report here the first in situ Raman investigations of fully deuterated -glycine up to -20 GPa. The discontinuous changes in COO- and ND3+ modes across -3 GPa indicate subtle structural rearrangements in fully deuterated α-glycine. The decrease in the intensity of ND3+ torsional mode is found to be similar to that of undeuterated α-glycine. The pressure-induced stiffening of ND and CD2 stretching modes are discussed in the context of changes in the hydrogen-bonding interactions.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Glycine; Pressure; Raman Spectroscopy; Hydrogen Bond
ID Code:81872
Deposited On:09 Feb 2012 04:50
Last Modified:09 Feb 2012 04:50

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