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Spectroscopic and Thermal Studies of [Cr2(NH2)2(H2O)2(SO4)2]·2H2O,[Cr(NCO)3(H2O)]·3H2O and [Fe O(OH)]·0.2H2O Compounds Formed by the Reactions of Urea with Cr2(SO4)3, Cr(CH3COO)3 AND Fe2(SO4)3
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 Title & Authors
Spectroscopic and Thermal Studies of [Cr2(NH2)2(H2O)2(SO4)2]·2H2O,[Cr(NCO)3(H2O)]·3H2O and [Fe O(OH)]·0.2H2O Compounds Formed by the Reactions of Urea with Cr2(SO4)3, Cr(CH3COO)3 AND Fe2(SO4)3
Sadeek, S.A.; Refat, M.S.; Teleb, S.M.;
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 Abstract
The bridged disulphato complex , terminal triisocyanato complex and limonite, compound were prepared by the reaction of and , respectively, with urea in aqueous media at . The infrared spectra of the products indicate that the absence of the bands of urea, but shows the characteristic bands of coordinated amide, water, bridged sulphato and isocyanato groups. Thermogravimetric (TG) and differential thermal analysis (DTA) measurements on the complexes are also recorded. The data obtained agree quite well with the expected structures. A general mechanisms describing the formation and its thermal decomposition of the complexes are suggested.
 Keywords
Bridged Disulphato Complex;Limonite;Triisocyanato Complex;TGA;Urea;
 Language
English
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