. sulphato [Cr2(NH2)2(H2O)2(SO4)2]2H2O, 3 isocyanato [Cr(NCO)3(H2O)] 3H2O

Journal of the Korean Chemical Society

Urea¹  : Bridged Disulphato Complex¹  Limonite¹  Triisocyanato Complex¹  TGA¹ 

关键词: Urea;    Bridged Disulphato Complex;    Limonite;    Triisocyanato Complex;    TGA;    Urea;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The bridged disulphato complex [Cr2(NH2)2(H2O)2(SO4)2]?H2O, terminal triisocyanato [Cr(NCO)3- (H2O)]?H2O complex and limonite, [FeO(OH)]?.2H2O compound were prepared by the reaction of Cr2(SO4)3?xH2O, Cr(CH3COO)3 and Fe2(SO4)3 , respectively ,with urea in aqueous media at 80oC. 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.

【 授权许可】

Unknown