Dhanaraj, P. V. and Rajesh, N. P. and Vinitha, G. and Bhagavannarayana, G. (2011) Crystal structure and characterization of a novel organic optical crystal: 2-Aminopyridinium trichloroacetate. Materials Research Bulletin, 46 (5). pp. 726-731. ISSN 0025-5408

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2-Aminopyridinium trichloroacetate, a novel organic optical material has been synthesized and crystals were grown from aqueous solution employing the technique of controlled evaporation. 2-Aminopyridinium trichloroacetate crystallizes in monoclinic system with space group P21/c and the lattice parameters are a = 8.598(5) Å, b = 11.336(2) Å, c = 11.023(2) Å, β = 102.83(1)° and volume = 1047.5(3) Å3. High-resolution X-ray diffraction measurements were performed to analyze the structural perfection of the grown crystals. Thermal analysis shows a sharp endothermic peak at 124 °C due to melting reaction of 2-aminopyridinium trichloroacetate. UV–vis–NIR studies reveal that 2-aminopyridinium trichloroacetate has UV cutoff wavelength at 354 nm. Dielectric studies show that dielectric constant and dielectric loss decreases with increasing frequency and finally it becomes almost a constant at higher frequencies for all temperatures. The negative nonlinear optical parameters of 2-aminopyridinium trichloroacetate were derived by the Z-scan technique.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords: Optical materials; Organic compounds; Crystal growth; X-ray diffraction; Crystal structure
Subjects: Materials Science
Depositing User: Mr. Abhishek Yadav
Date Deposited: 21 Nov 2012 08:21
Last Modified: 21 Nov 2012 08:21
URI: http://npl.csircentral.net/id/eprint/829

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