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Fleck, M. and Petrosyan, A.M. (2010) Difficulties in the Growth and Characterization of Non-Linear Optical Materials: A Case Study of Salts of Amino Acids. Journal of Crystal Growth, 312, 2284-2290.
http://dx.doi.org/10.1016/j.jcrysgro.2010.04.054

has been cited by the following article:

• TITLE: Reinvestigation of the Crystal Growth of “L-Proline Succinate” and “L-Threonine Zinc Acetate” Showing Use of Infrared Spectra for Product Identification

  AUTHORS: Subramanian Natarajan, Bikshandarkoil R. Srinivasan, Kalimuthu Moovendaran

  KEYWORDS: L-Proline Succinate, L-Threonine Zinc Acetate, X-Ray Cell Data, IR Spectra, Non-Linear Optical Crystals

  JOURNAL NAME: Journal of Crystallization Process and Technology, Vol.4 No.2, April 28, 2014

  ABSTRACT: Reinvestigation of the growth of L-proline succinate (1) (Paramasivam and Ramachandra Raja, Journal of Crystallization Process and Technology, 2 (2012) 21 - 24; Balamurugaraj et al., Journal of Material Physics and Chemistry 1 (2013) 4 - 8) and L-threonine zinc acetate (2) (Puhal Raj and Ramachandra Raja, Photonics and Optoelectronics, 2 (2013) 56 - 64) is reported. Slow evaporation of an aqueous solution containing equimolar quantities of L-proline and succinic acid (for 1) and L-threonine and zinc acetate (for 2) results in the fractional crystallization of succinic acid (in the first case) and L-threonine (in the second case) and not any novel organic non-linear optical (NLO) crystals. In this paper, the usefulness of infrared spectra for correct product characterization is demonstrated.