Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran.
Spectrochim Acta A Mol Biomol Spectrosc. 2013 Nov;115:725-9. doi: 10.1016/j.saa.2013.06.117. Epub 2013 Jul 6.
Some new tridentate ONN Schiff base complexes of [NiL(PR3)] (where L=Salicylidene2-amino4-nitrobenzene (L(1)), 5-BrSalicylidene2-amino4-nitrobenzene (L(2)), 5-NO2Salicylidene2-amino4-nitrobenzene (L(3)), 5-MeOSalicylidene2-amino4-nitrobenzene (L(4)) and 3-MeOSalicylidene2-amino4-nitrobenzene (L(5)), R=Bu and Ph (with L(1))) were synthesised and characterized by IR, UV-Vis, (1)H NMR spectroscopy and elemental analysis. The geometry of [NiL(1)(PPh3)] was determined by X-ray crystallography. It indicated that the complex had a planar structure and four coordinates in the solid state. The thermogravimetry (TG) and differential thermoanalysis (DTA) of the synthesized complexes were carried out in the range of 20-600°C, leading to the decomposition of L(1)-L(3) type in three stages and of L(4)-L(5) and [NiL(1)(PPh3)] type in four stages. Thermal decomposition of the complexes was closely the dependent upon the nature of the Schiff base ligands and proceeded via the first order kinetics.
一些新的三齿 ONNSchiff 碱[NiL(PR3)]配合物（其中 L=水杨醛缩 2-氨基-4-硝基苯（L(1)）、5-Br 水杨醛缩 2-氨基-4-硝基苯（L(2)）、5-NO2 水杨醛缩 2-氨基-4-硝基苯（L(3)）、5-MeO 水杨醛缩 2-氨基-4-硝基苯（L(4)）和 3-MeO 水杨醛缩 2-氨基-4-硝基苯（L(5)），R=Bu 和 Ph（L(1)））被合成并通过 IR、UV-Vis、(1)H NMR 光谱和元素分析进行了表征。[NiL(1)(PPh3)]的几何结构通过 X 射线晶体学确定。结果表明，该配合物在固态中具有平面结构和四个配位。所合成的配合物的热重（TG）和差示热分析（DTA）在 20-600°C 的范围内进行，导致 L(1)-L(3)型在三个阶段和 L(4)-L(5)和[NiL(1)(PPh3)]型在四个阶段分解。配合物的热分解与 Schiff 碱配体的性质密切相关，并通过一级动力学进行。
