2-羟基-4-甲氧基二苯甲酮合镍(Ⅱ)配合物的合成与表征

Synthesis and Characterization of Nickel(Ⅱ) Complex of 2-Hydroxy-4-Methoxybenzophenone

以2-羟基-4-甲氧基二苯甲酮（UV-9）和NiCl2为原料,合成了一种新的镍配合物Ni（C14H11O3）2.H2O,并通过红外、热重和紫外等手段对其进行表征。结果表明,配体中羰基氧、邻位羟基氧与金属离子配位,金属离子与配体的化学计量比为1∶2;得到的配合物在120-630℃存在3个分解阶段,其中120-258℃为受热失去一个配位水的过程,而258~630℃的两个失重阶段均为其热分解过程,最终分解产物为NiO,且其热稳定性优于UV-9;紫外分析表明了配合物配合后仍具有吸收紫外线的能力。

A new Nickel（ Ⅱ ） complex was sythesized with 2- hydroxy- 4- methoxybenzophenone and NiCl2 used as raw materials, and characterized through IR, TG, UV. The results show that the complex ratio of 2- hydroxy- 4- methoxybenzophenone to Nickel（ Ⅱ ） is 1 ： 2; the metal ion coordinates with oxygen atoms of - C= O and next to - OH group. Meanwhile, its thermal decomposition process is divided into three weightless stages during 120-630 ℃, of which 120-258 ℃ is the process of a coordinated water lost, and 258-630 ℃ has two thermal decomposition stages. Finally, the complex is decomposed into NiO. UV analysis indicates that thermal stability of the complex is better than that of 2-hydroxy -4-methoxybenzophenone. The complex remains the quality of absorbing ultraviolet radiation.