[Cu(DPA)μ-NO_3]_n·3nH_2O(DPA=2,2’-联吡啶胺)的晶体结构和非等温热分解动力学的研究

Crystal Structure and Non-isothermal Kinetics of Thermal Decomposition [Cu(DPA)μ-NO_3]_n·3nH_2O(DPA =2,2',-dipyridylamine)

本文对配合物[Cu(DPA)μ-NO3]n.3nH2O(1)(DPA=2,2’-联吡啶胺)合成、结构和光谱性能进行了描述。(1)属于单斜晶系,P21/c空间群。中心金属离子CuII处于扭曲的四方锥的配位环境中:一个DPA上的两个N原子和一个NO3-的两个O原子位于四方锥底部平面,轴向位置由另一NO3-的O原子占据。每一个NO3-的两个氧原子与CuII鳌合,且另一氧原子与相邻的CuII配位形成一维Z型链结构。链与链之间靠分子间的相互作用力在bc面形成二维结构。此外,我们运用TG-DTG热分析技术结合红外光谱对其热分解行为和热稳定性进行了探讨,并对其热分解反应进行了非等温动力学计算,得到了相应的动力学参数。

The synthesis, crystal structure and spectroscopic characterization of complex [ Cu （DPA）μ - NO3]n ·3nH2O （1） （DPA = 2,2＇ - dipyridylamine） are described. The complex （1） belongs to the monoclinic system, space group P21/c. The coordination geometry of copper center of （ 1 ） is a distorted square - pyramidal ： the two nitrogen atoms of one DPA and two oxygen atoms of one nitrate are positioned in bottom plane, while the apical position is occupied by the oxygen atom of another nitrate. Two oxygen atoms of each nitrate chelate one copper atom, and another oxygen atom coordinates to other copper atom to form 1D zigzag chain. The cystal forms the 2D sheets in bc plane by molecular interactions between 1D chains. In addition, the thermal behavior in nitrogen is studied by thermogravimetry and the kinetic parameters of the title compound have been calculated.