Potentiometric, spectroscopic and thermal studies on the metal chelates of 1-(2-thiazolylazo)-2-naphthalenol
作者:M.M. Omar、Gehad G. Mohamed
DOI:10.1016/j.saa.2004.05.040
日期:2005.3
[M(L)2] for M = Mn(II), Co(II), Ni(II), Zn(II) and Cd(II); [M(L)X].nH2O for M = Cu(II) (X = AcO, n = 3), Pd(II) (X = Cl, n = 0) and UO2(II) (X = NO3, n = 0), and [Fe(L)Cl2(H2O)].2H2O. The molar conductance data reveal that the chelates are non-electrolytes. IR spectra show that the ligand is coordinated to the metal ions in a terdentate manner with ONN donor sites of the naphthyl OH, azo N and thiazole
Mn(II),Fe(III),Co(II),Ni(II),Cu(II),Zn(II),Cd(II),Pd(II)和UO2(II)螯合物的合成与表征据报道1-(2-噻唑基偶氮)-2-萘酚(TAN)。配体的解离常数和金属络合物的稳定性常数是在25摄氏度和离子强度为0.1 M的条件下,通过pH值计算得出的。通过元素和热分析,摩尔电导,IR,磁和漫反射光谱对固体配合物进行表征。对于M = Mn(II),Co(II),Ni(II),Zn(II)和Cd(II),发现配合物具有式[M(L)2]。[M(L)X] .nH2O,用于M = Cu(II)(X = AcO,n = 3),Pd(II)(X = Cl,n = 0)和UO2(II)(X = NO3,n = 0)和[Fe(L)Cl2(H2O)]。2H2O。摩尔电导数据表明,螯合物是非电解质。红外光谱表明,配体与萘,OH,偶氮和噻唑N的ONN供体位点呈齿状