Solvent free synthesis of a novel intermolecular compound and its crystal structure, thermal and optical studies

Abstract Novel intermolecular compound (IMC) of anthranilic acid and dinitrobenzene has synthesized by solvent free synthesis and its large size single crystal has grown using solution growth technique and mixed solvent. The stoichiometry of the IMC was determined by phase diagram study. The spectral, single crystal XRD and atomic packing studies of the IMC confirmed the hydrogen bonding association between the parent compounds. The DSC of IMC showed a sharp melting peak at 141 °C, however TGA study confirms its thermal stability up to 220 °C. The solvent effects on the electronic absorption and fluorescence spectra of IMC have been studied as function of solvent polarity and their quantum yields are calculated in different solvents. The optical transmittance spectrum of as grown crystal of IMC shows 55% transparency however its energy band gap and refractive index are found to be 3.40 eV and 2.29, respectively.