2-羟基-4-辛氧基二苯甲酮稀土配合物合成与表征

Synthesis and Characterization of Rare Earth Metal Ions(Ⅲ) Complexes of 2-Hydroxy-4-n-octoxybenzophenone

以2-羟基-4-辛氧基二苯甲酮、稀土金属氯化物为原料,乙醇为溶剂,合成了7种稀土金属配合物,并通过元素分析、摩尔电导、IR、UV、TG/DTA等分析方法对其结构进行了表征。结果表明,所形成配合物的化学组成为RE(C21H25O3)3,金属离子与配体的化学计量比为1∶3,为非电解质;配体中羟基氧和羰基氧与稀土金属离子配位,形成配位数为6的配合物,仍具有紫外线的吸收功效,且稳定性有明显的提高。

Seven kinds of rare earth metal complexes were synthesized using RECl3 and 2-hydroxy-4-n-octoxybenzophenone as raw material,and ethanol as solvent. The composition and structure of the complexes were characterized by elemental analysis,molar conductance,IR,UV and TG / DTA. The experimental result showed the composition of complex was RE（ C21H25O3）3,and the complexe ratio of 2-hydroxy-4-n-octoxy-benzophenone to rare earth metal ions was 1 ∶ 3,and the complexes were non-electrolyte. Rare earth metal ions coordinated with oxygen atoms of-C = O and-OH group,and the formation of coordination number was 6 of the complexes. The complexes still had the absorption effect of ultraviolet ray,and the stability was obviously improved.