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Infrared spectroscopic studies of the different solid products upon the chemical reactions between some transition metal ions/ ammonia/ urea with 1: 2: 10 ratios

Samy M. El-Megharbel, Ahmed El-Maghraby and Moamen S. Refat

There are different solid products (MnO, Co(NCO)2, ZnCO3 and CdO) were presented through the chemical reactions of MnCl2, Co(NO3)2, Zn(NO3)2 or CdCl2), ammonia and urea with molar ratio 1: 2: 10, respectively, at ~ 100 oC for 3 hrs in aqueous media. The infrared spectra of the results indicate absence of the essential bands of urea, but existed of the characteristic bands of oxide and both of ionic carbonate, CO3 2– and isocyanate, NCO–. The reaction mechanisms of decomposition of urea in the presence of alkaline media using Mn(II), Co(II), Zn(II) or Cd(II) salts were described.