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A new triazoline-quinazolinone compound, 1-cyclopropyl-3-(3-((1-(2- methoxyphenyl)-5-oxo-[1, 2, 4]triazolo[4,3-a]quinazoline-4(5H)-yl)methyl)phenylurea, was attained by nine steps and selected the method of inverse synthetic analysis. Meanwhile, the structure of the title compound was not only certified by MS,  1 H NMR, FT-IR, and  13 C NMR spectroscopy, but the compound’s single crystal was measured by X-ray diffraction. The optimized molecular crystal structure was ulteriorly determined using density functional theory (DFT), and it was compared with the value of X-ray diffraction. Furthermore, through more deeply studies by means of the molecular electrostatic potential and frontier molecular orbitals (FMOs) of compound  1 , more physicochemical properties were investigated.

molecular crystals and liquid crystals

Synthesis, crystal structure, and DFT study of 1-cyclopropyl-3-(3-((1-(2-methoxyphenyl)-5-oxo-[1, 2, 4]triazolo[4,3-a]quinazolin-4(5 H )-yl)methyl)phenylurea