Synthesis, Crystal Structure and Spectrum Characterization of Schiff Base Isonicotinaldehyde Thiosemicarbazone

摘要

The Schiff base isonicotinaldehyde thiosemicarbazone prepared by the condensation of thiosemicarbazide with pyridine-4-carbaldehyde in ethanol, has been characterized by IR,UV-Vis, element analysis and its stucture determined by singl-crystal X-ray diffraction techniques from diffractometer data, Crystal of C7H8N4S is Monoclinic, space group P21, with unit cell parameters: a=7.241 (1)(°A) , b=13.963(2)(°A), c= 8.416(1)(°A),β =90.92°,V=850.91 (44)(°A)3,Dc=1.407Mg/m3, Z=4, Mr=180.23, μ= 0.327mm-1 F(000)=376, final R1= 0.0315 and wR2= 0.0821 (I＞2 σ (I)).The crystal packing is stabilized by an extensive two dimensional double layer network of hydrogen bonds(N-H...N and N-H...S).