Metal complexes of Schiff base derived from 2-furancarboxaldehyde and 2-aminobenzoic acid (HL) are reported and characterized based on elemental analyses, IR, 1H NMR, UV-Vis, solid reflectance, magnetic moment, molar conductance and thermal analysis. The ligand dissociation as well as the metal-ligand stability constants have been calculated pH-metrically at 25°C and ionic strength μ=0.1 (1 M NaCl). The complexes are found to have the formulae [M(HL)2](X)n·yH2O (where M=Fe(III) (X=Cl, n=3, y=4), Co(II) (X=Cl, n=y=2), Ni(II) (X=Cl, n=y=2), Cu(II) (X=Cl, n=y=2) and Zn(II) (X=AcO, n=y=2)) and [UO2(L)2]·2H2O. The thermal behaviour of these chelates is studied and the activation thermodynamic parameters are calculated using Coats-Redfern method. The ligand and its metal complexes show a biological activity against some bacterial species.
基于元素分析、红外光谱、1H核磁共振、紫外-可见光谱、固体反射率、磁矩、摩尔电导率和热分析,对2-
呋喃甲醛和
2-氨基苯甲酸(HL)衍生的席夫碱
金属配合物进行了报道和表征。在25°C和离子强度μ=0.1(1 M NaCl)下,通过pH测量法计算了
配体的解离以及
金属-
配体的稳定性常数。发现这些配合物的
化学式为[M(HL)2](X)n·yH2O(其中M=Fe(III)(X=Cl,n=3,y=4)、Co(II)(X=Cl,n=y=2)、Ni(II)(X=Cl,n=y=2)、Cu(II)(X=Cl,n=y=2)和Zn(II)(X=AcO,n=y=2))和[UO2(L)2]·2H2O。研究了这些螯合物的热行为,并使用Coats-Redfern方法计算了活化热力学参数。
配体及其
金属配合物对某些细菌具有
生物活性。