Novel l,5-bis(4-methoxybenzaldehyde)-dithiocaibohydrazone (1), l,5- bis(p-dimethylaminobenzaldehyde)-dithiocarbohydrazone (2) and 1,5- bis ( 2-mraldehyde )-dithiocarbohydrazone (3) have been synthesized and characterized by elemental analysis, IR, NMR and MS spectra. The 13C NMR data of the dithiocarbohydrazones was initially reported. It was found that the partial~ 13C NMR signals of the title compounds presented small and broad, and were difficult to be detected as the result of different conformers or dimers formed in solution. The crystal structure of compound 1 was determined by X-ray single crystal diffraction analysis. Crystal structure of compound 1 belongs to monoclinic system with space P2-1/-c. The unit cell parameters are a = 1.4363(3) nm, b - 1.2622(2) nm, c = 1.0970(2) nm, β= 101.730 (10)°, K= 1.9472(6) nm~3, Z=4, D-c = 1.318 g/cm~3, // =0.193 mm~-1, F (OOO) = 816, R-1 =0.0560, W?2 = 0.1496.

Key words: THIOSEMICARBAZONE P;CRYSTAL STRUCTURE;DIMER;BENZALDEHYDE P, METHOXY GROUP;ELEMENTAL ANALYSIS;IR;1HNMR;MS