Ali Omyma A M, El-Medani Samir M, Abu Serea Maha R, Sayed Abeer S S
Chemistry Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt.
Chemistry Department, Faculty of Science, El-Fayoum University, El-Fayoum, Egypt.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Feb 5;136 Pt B:651-60. doi: 10.1016/j.saa.2014.09.079. Epub 2014 Oct 27.
A series of eight metal Schiff base complexes were synthesized by the thermal reaction of Cu(II), Ni(II), Fe(III), Co(II), Zn(II), Hg(II), La(III) or Sm(III) with a Schiff base "L" produced by the condensation of furfuraldehyde and 1,2-diaminobenzene. These compounds were characterized by elemental analysis, UV-Vis, FT-IR, molar conductance, mass spectrometry, thermal and fluorescence studies. The studies suggested the coordination of the ligand L to metal through azomethine imine nitrogen and furan oxygen atoms of Schiff base moiety. Thermogravimetric (TG/DTG) analyses data were studied and indicated high stability for all complexes and suggested the presence of lattice and/or coordinated water molecules in the complexes. Coats-Redfern method has been used to calculate the kinetic and thermodynamic parameters of the metal complexes. The spectral and thermal analysis reveal that all complexes have octahedral geometry except Cu(II) and Ni(II) complexes which can attain a square planner arrangements. The ligand and its complexes exhibited intraligand (π-π(∗)) fluorescence and can potentially serve as photoactive materials. Both the ligand and its complexes have been screened for antibacterial activities.
通过将糠醛与1,2 - 二氨基苯缩合生成的席夫碱“L”与Cu(II)、Ni(II)、Fe(III)、Co(II)、Zn(II)、Hg(II)、La(III)或Sm(III)进行热反应，合成了一系列八种金属席夫碱配合物。这些化合物通过元素分析、紫外 - 可见光谱、傅里叶变换红外光谱、摩尔电导率、质谱、热分析和荧光研究进行了表征。研究表明配体L通过席夫碱部分的甲亚胺亚胺氮和呋喃氧原子与金属配位。对热重（TG/DTG）分析数据进行了研究，结果表明所有配合物都具有高稳定性，并表明配合物中存在晶格水和/或配位水分子。采用Coats - Redfern方法计算了金属配合物的动力学和热力学参数。光谱和热分析表明，除了可以形成平面正方形结构的Cu(II)和Ni(II)配合物外，所有配合物都具有八面体几何结构。配体及其配合物表现出配体内（π - π(∗)）荧光，有可能用作光活性材料。对配体及其配合物都进行了抗菌活性筛选。
