Cobalt (II), nickel (II), copper (II) and manganese (II) complexes of dihydrazone derived from the condensation of oxaloyldihydrazide with 2-hydroxybenzaldehyde have been synthesized. The dihydrazone ligand/chelates were characterized on the basis of their elemental analyses, spectral (UV–Vis., FT-IR, mass, ¹H NMR), magnetism, thermal (TGA) measurements and structures of the compounds have been established. The surface morphology of the desired complexes was studied by SEM. The ligand is coordinated to the Ni(II), Co(II), Mn(II) and Cu(II) centers in bi, tetra, penta and hexadentate way giving mono-nuclear complexes except in case of manganese and copper the bi-nuclear complexes were formed. The nickel complex has tetrahedral geometry while the other complexes are suggested to have octahedral configurations. The prepared samples have been assayed for their electrical activities. The electrical activity (DC and AC conductivity) for ligand and its metal complexes has been examined at different frequencies (1, 10, 100 kHz) in the temperature ranges 303–573 and 300–625 K, respectively. The DC and AC conductivity are viewed as thermally activated process at higher temperatures and a marked increment was seen in case of Mn(II) complex. The dielectric permittivity was determined in the temperature area of 300–625 K and diminished with augmentation of frequency proposing a typical behavior of dielectrics.

合成了草酰二酰肼与2-羟基苯甲醛缩合得到的二hydr的钴（II），镍（II），铜（II）和锰（II）配合物。二hydr配体/螯合物根据其元素分析，光谱（UV-Vis。，FT-IR，质量，¹已经确定了化合物的1 H NMR，磁性，热（TGA）测量和结构。通过SEM研究了所需配合物的表面形态。配体以双，四，五和六齿的方式与Ni（II），Co（II），Mn（II）和Cu（II）中心配位，给出单核络合物，但锰和铜除外。形成了核复合体。镍配合物具有四面体几何形状，而其他配合物则建议具有八面体构型。已经对制备的样品的电活性进行了测定。分别在303–573和300–625 K的温度范围内以不同的频率（1、10、100 kHz）检查了配体及其金属配合物的电活动（DC和AC电导率）。直流和交流电导率被视为在较高温度下的热活化过程，而在Mn（II）配合物的情况下，则可以看到明显的增加。介电常数是在300-625 K的温度范围内确定的，并且随着频率的增加而减小，这表明介电常数是典型的行为。