Growth and Characterization of Dicoumarole Derivative

Abstract

The Dicoumarole derivative 4-amino-3-((4-amino-2-oxo-2H-chromen-3-yl)(3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methyl)-2H-chromen-2-one obtain by crystal growth by slow evaporation solution growth method having approximate dimensions of 0.630 x 0.400 x 0.310 mm. The Crystal where characterized using different characterization techniques like single crystal XRD, FT-IR, dielectric study, TG-DTA and UV-Visible spectra. Single crystal XRD was adopted for determination of lattice constant, space group and structure analysis. FT-IR spectrum denotes that there are mainly six group of absorption. The dielectric study represent that dielectric constant decreased as the frequency of the applied field increased and also studied The variation of dielectric loss, a.c. onductivity and a.c. resistivity with frequency of the applied field in the frequency range from 20 Hz to 2 MHz at room temperature. Thermal stability of dicoumarole determine by TG-DTA study. The study of UV-Visible spectrum denotes that the good transmittances of the crystal in the entire visible region