Crystal and Molecular Structure of 3-Amino-2-(4-methylphenylamino)quinazolin-4(3H)-one

The crystal structure of 3-Amino-2-(4-methylphenylamino)quinazolin-4(3H)-one (TNT2) is reported. TNT2 is monoclinic, space group C2/c with a = 23.127(5), b = 7.845(2), c = 14.625(3) A and beta=93.58 (3)°. The structure was refined by full matrix least square methods using SHELX93-97program to Rl = 0.051. Torsion angles calculation found that the three rings are-planar within the Experimental error. The phenyl ring connected to C2 is deviated slightly from the plane of quanozlin ring, this feature is different from that found in the molecules of 3-(Diacylamino)quinazolin-4(3H)-ones. Intermolecular hydrogen bond is found between N1...H18B with a value of 2.710 A

Crystal and Molecular Structure of 2-Hydrazino-3-methylquinoxaline

2-hydrazino-3-methylquinoxaline (TNT1) crystallizes in monoclinic system ,space group P2j/n. The cell dimensions were found to be:a =14.179(2), b = 11.799 (4), c = 4.949 (1) A & 0=93.42 A The data were collected with Nonious Fast area detector. The structure was solved using direct methods technique, and refined by full matrix least square methods and the reliability factor converged to Rl = 0.05. The two rings found to be planar. The hydrazino side chain is extended quasi trans. Intermolecular hydrogen bonds formation are between N9...HIOA ,N4...H10A and N10...H10B