Synthesis, Crystal Structure and Thermal Analysis of N-(2,3-Dimethyl-phenyl)-N′-(methoxyl formyl)thiourea

N-(2,3-Dimethyl-phenyl)-N'-(methoxyl formyl)thiourea was synthesized by the reacting of 2,3-dimethylaniline, potassium thiocyanate(KSCN) and methyl chloroformate(ClCOOCH3). Single crystal was obtained by slowly evaporation solvent at room temperature. The structure was characterized by elemental analysis, IR and X-ray crystalography. The compound crystallized: a triclinic system with space group P (1) over bar, a=0.83440(12) nm, b=0.89113(13) nm, c=0.93015(13) nm, alpha=76.548(2)degrees, beta=63.906(2)degrees, gamma=82.538(2)degrees, V=0.60379(15) nm(3), Z=2, D-c=1.311 mg/m(3), F(000)=252, mu=0.256 mm(-1), R-1=0.0379, wR(2)=0.0919. The specific heat capacity of the title compound was determined by a Micro-DSC method, and the specific heat capacity was 1.25 J.g(-1).K-1 at 298.15 K. Thermodynamic functions, relative to those at the standard temperature of 298.15 K, were calculated via thermodynamic relationship. The thermal behavior of the title compound under a non-isothermal condition was studied by differential scanning calorimetry/thermogravimetric(DSC/TG) method. There was an obvious endothermic peak in the DSC curve, the peak temperature was 479.43 K. The compound mass loss was 89.94% observed from the TG curve.