Isolation, structural, spectral, and thermal studies of imperatorin micro-crystals from Prangos pabularia

• DOI: 10.1007/s10973-012-2683-x
• Publication Date: 2012-09-21T04:45:48Z
• Authors: Javid A. Banday; Feroz A. Mir; Mushtaq A. Qurishi; Surinder Koul; Tej K. Razdan
• Keywords: 0103 physical sciences; 02 engineering and technology; 0210 nano-technology; 01 natural sciences

Imperatorin (mol. formula = C16H14O4, mol. mass = 270) micro-crystals were isolated from ethyl acetate extract of the root parts of the plant Prangos pabularia. The composition related structural, spectral, and thermal properties were investigated. All the crystals were found to have single phase with orthorhombic structure. UV–Visible spectrum showed both direct forbidden transition and indirect allowed transition. The calculated optical band gaps (Eg) were 3.64 and 3.70 eV for direct forbidden and indirect allowed transitions, respectively. From the thermal studies of these crystals, melting point, stability, and other relevant information was obtained, ensuring the suitability of the material for application in any device where the crystals may have to withstand this range of temperature.