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The Scientific World Journal
Volume 2012, Article ID 620189, 7 pages
Research Article

An Optical Overview of Poly[ 𝝁 𝟐 -L-alanine- 𝝁 𝟑 -nitrato-sodium(I)] Crystals

1Universidad Tecnológica de la Zona Metropolitana de Guadalajara Tlajomulco de Zúñiga, Jaisco, Mexico
2Centro de Investigación en Materiales Avanzados, S. C., Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109 Chihuahua, CHIH, Mexico

Received 11 October 2011; Accepted 8 December 2011

Academic Editor: Vinoy Thomas

Copyright © 2012 E. Gallegos-Loya et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Single crystals of the semiorganic materials, L-alanine sodium nitrate (LASN) and D-alanine sodium nitrate (DASN), were grown from an aqueous solution by slow-evaporation technique. X-ray diffraction (XRD) studies were carried for the doped grown crystals. The absorption of these grown crystals was analyzed using UV-Vis-NIR studies, and it was found that these crystals possess minimum absorption from 200 to 1100 nm. An infrared (FTIR) spectrum of single crystal has been measured in the 4000–400 cm−1 range. The assignment of the observed vibrational modes to corresponding symmetry type has been performed. A thermogravimetric study was carried out to determine the thermal properties of the grown crystal. The efficiency of second harmonic generation was obtained by a variant of the Kurtz-Perry method.