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.