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Original Articles Open Access
The complexation mode of urea (U) with cobalt(II), copper(II), ferric(III), manganese(II), nickel(II), and zinc(II) phosphate salts at 85 oC temperature with 3-5 hrs has been studied by conductivity measurements and infrared spectroscopy. The high values of molar conductivity of the resulting urea complexes show them to be electrolytes in nature. The physical and spectral data were well explained in terms of the formation of [Co3(NH2CONH2)6](PO4)2, [Cu3(NH2CONH2)4](PO4)2, [Fe(NH2CONH2)6] PO4, [Mn3(NH2CONH2)6](PO4)2, [Ni3(NH2CONH2)6](PO4)2 and [Zn3(NH2CONH2)4] (PO4)2. On the basis of the infrared spectral data and the values of stretching vibrational bands of both –C=O and –NH2 groups, the complexation of metal ions toward urea was distinguished.
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Author(s): M Mamoun ALMajthoub and Mahmoud Salman
Urea, Transition metal phosphate, Conductance, Infrared spectra., Infrared spectroscopic