RE(III)与2-羰基丙酸水杨酰腙配合物的合成、表征及热化学

Synthesis, Characterization and Thermochemistry Properties of RE(III) and 2-oxo-propionic Acid Salicyloyl Hydrazone Complexes

用2-羰基丙酸水杨酰腙与轻稀土硝酸盐反应,合成了7种新的配合物.经元素分析、化学分析及X射线粉末衍射等手段确定了其组成为RE(C10H9N2O4)(C10H8N2O4)·nH2O(RE=La、Ce、Pr、Nd、Sm、Eu、Gd),用红外、紫外、荧光光谱分析对以上配合物的结构进行了表征;用微热量计测定了稀土芳酰腙配合物的溶解焓,发现其溶解焓数据不随稀土原子序数单调变化,而呈转折变化,可认为呈稀土的四分组现象的前两组.

A series of new light rare earth complexes of RE（C10H9N2O4）（C10H8N2O4）·nH2O（RE=La、Ce、n、Nd、Sm、Eu、Gd） have been synthesized. The composition of the complexes is determined by elemental analysis, IR, UV, fluorescence and XRD. The enthalpies of dissolution for the complexes in DMF were measured and it was found that the correlation of the enthalpies of dissolution for the complexes and atomic number was not monotonic. The enthalpy of dissolution curves of the light rare earth complexes are regarded as the front two groups of ＂quadripartite： effect＂.