A single crystal of urea–thiourea was grown by slow evaporation of aqueous solution at room temperature. The bright and transparent
crystals obtained were characterised by TG–DTA, UV and FTIR spectral analyses. A fitting decomposition pattern for the title
compound was formulated on the TG curve which shows a two stage mass loss between 200 and 750 °C. DTA curve shows exothermic
peaks supporting the formulated decomposition pattern in this temperature range. The UV and FTIR spectra show the characteristic
absorption, vibration frequencies due to urea–thiourea zinc chloride crystals. Detailed structural analysis of the compound
is under progress.