Growth, spectral, and thermal characterization of 2-hydroxy-3-methoxybenzaldehyde semicarbazone

• Published in: Journal of thermal analysis and calorimetry 2013-05, Vol.112 (2), p.913-919
• Main Authors: Binil, P. S., Anoop, M. R., Suma, S., Sudarsanakumar, M. R.
• Format: Article
• Language: English
• Subjects: Analytical Chemistry; Calorimetry; Chemical properties; Chemistry; Chemistry and Materials Science; Crystal lattices; Crystal structure; Crystals; Dimethylformamide; Ethyl alcohol; Exact sciences and technology; Fourier transforms; Fundamental areas of phenomenology (including applications); Hydrogen; Inorganic Chemistry; Invisibility; Measurement Science and Instrumentation; Noncondensed benzenic compounds; Optical materials; Optics; Organic chemistry; Other nonlinear optical materials; photorefractive and semiconductor materials; Physical Chemistry; Physics; Polymer Sciences; Preparations and properties; Single crystals; Spectra; Structure; Thermal properties
• ISSN: 1388-6150; 1588-2926; 1572-8943
• DOI: 10.1007/s10973-012-2601-2

2-Hydroxy-3-methoxybenzaldehyde semicarbazone (HMBS) has been synthesized from 2-hydroxy-3-methoxybenzaldehyde and semicarbazide hydrochloride using sodium acetate as catalyst. Good quality single crystals of HMBS were successfully grown by slow evaporation method at room temperature using a mixture of DMF and ethanol as solvent. Fourier transform infrared and Fourier transform Raman spectral studies have been performed to identify the functional groups. Single-crystal XRD study was conducted to obtain the crystal structure and lattice parameters. The grown crystal was subjected to 1 H- and 13 C-NMR spectral studies in order to confirm its structure and purity. The compound crystallizes into a monoclinic P 21/ c space group. Intermolecular hydrogen-bonding interactions facilitate unit cell packing in the crystal lattice. The UV–Vis spectrum confirmed the transparency of the compound between the wavelengths 420 and 1,100 nm, which is a characteristic property of a nonlinear optical (NLO) material. The thermal decomposition of the compound under static air atmosphere was investigated by simultaneous TG–DTG at a heating rate of 10 °C min −1 . The NLO property of HMBS was confirmed from the second-harmonic generation by Kurtz–Perry powder test.