| {[Cd(NTO)2(CHZ)]·2H2O}n的合成、分子结构和热分解机理 |
| Preparation, Crystal Structure and Thermal Decomposition Mechanisms of {[Cd(NTO)2(CHZ)]·2H2O}n |
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| 摘要: 通过3-硝基-1,2,4-三唑-5-酮(NTO)镉与碳酰肼(NH2NHCONHNH2,CHZ)反应制备出了新型配合物{[Cd(NTO)2(CHZ)]·2H2O}n,研究了其分子结构和热分解机理。该配合物的晶体属正交晶系,Pbca空间群,晶体学参数:a=0.8623(1)nm,b=1.8259(4)nm,c=1.9997(3)nm |
| 关键词: 碳酰肼 镉配合物 分子结构 热分解机理 |
| 基金项目: |
| Abstract: The coordination compound of {[Cd(NTO)2(CHZ)]·2H2O}n was prepared by the reaction of cadmium salt of 3-nitro-1,2,4-triazol-5-one (NTO) with carbohydrazide (CHZ) in solution. The crystal structure of {[Cd(NTO)2(CHZ)]·2H2O}n was determined by X-ray diffraction analysis. Thermal decomposition mechanism of the com-pound was studied using TG-DTG, DSC and IR techniques. The crystals belong to orthorhombic with space group Pbca. The unit cell parameters are as follows:a=0.8623(1)nm, b=1.8259(4)nm, c=1.9997(3)nm, Z=8, R1=0.0517, wR2=0.0655. The coordination number of the cadmium cation is six and the Cd2+ ion shows a distorted octahedral geometry. The NTO serves as a bridging bidentate ligand, coordinated to two cadmium cations with its carbonyl oxygen atom and the nitrogen atom of 4-position. The CHZ serves as a tri-dentate ligand, coor-dinated to a cadmium cation with its carbonyl oxygen atom and one of the two nitrogen atoms. At the same time, it is coordinated to the second cadmium cation using other end nitrogen atom. The results demonstrate that the three-dimensional infinite super-molecular network is constructed. |
| Keywords: carbohydrazide cadmium coordination compound molecular structure thermal decomposition mechanisms |
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| 张同来,吕春华,张建国,张志刚,郁开北.{[Cd(NTO)2(CHZ)]·2H2O}n的合成、分子结构和热分解机理[J].无机化学学报,2002,18(2):138-142. |
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