新型镉配合物{[Cd(diaba)(phen)2]NO3·H2O}的合成、晶体结构及其性能研究

Synthesis,Crystal Structure and Properties of a Novel Cadmium Complex{[Cd(diaba)(phen)_2]NO_3·H_2O}

3,5-二氨基苯甲酸(diaba),1,10-邻菲啰啉(phen)与过渡金属镉经水热反应合成了一个新型的镉配合物[Cd(diaba)(phen)2]NO3·H2O(1),其结构和性能经IR,元素分析,X-单晶衍射,热重分析及荧光光谱表征。1属正交晶系,空间群Fddd,晶胞参数a=1.425 81(7)nm,b=2.564 62(13)nm,c=3.092 47(17)nm,Z=16,R1=0.030 2,wR2=0.079 4。1的结构单元由一个Cd(Ⅱ),一个diaba和两个phen构成,单元结构通过复杂的氢键和较强的π-π堆积形成三维超分子化合物。在335 nm波长激发下,1的最大荧光发射峰位于400 nm;1失重10.76%的温度为300℃。

A novel cadmium complex, [ Cd （diaba） （phen） 2 ] NO3 ·H2O （ 1 ）, was synthesized by hydrothermal reaction of 3,5-diamino-benzoic acid （ diaba）, 1,10-phenanthroline （phen） and Cd （NO3） 2. The structure and properties were characterized by IR, elemental analysis, XRD, TG and fluorescent spectrum. 1 belongs to orthorhombic, space group Fddd with a = 1. 425 81 （7） nm, b = 2.56462（13） nm, c=3.09247（17） nm, Z=16, R1 =0.030 2, wR2 =0.079 4. The crystal structure of I consists of one Cd（ II ）, one diaba ligand and two phen ligands. In the 1, the adjacent mononuclear molecular recognize each other to generate a 3D supramolecular structure via the hydro- gen bonding and the stacking interaction. The maximum peak of 1 was at 400 nm under excita- tion wavelength of 335 nm in solid-state and 10.76% weigth loss temperature is 300 ℃.