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三個(gè)不同穿插的鋅配合物的合成、結(jié)構(gòu)和熱動(dòng)力學(xué)分析(英文)

發(fā)布時(shí)間:2018-05-11 01:18

  本文選題:配合物 + 穿插; 參考:《物理化學(xué)學(xué)報(bào)》2016年06期


【摘要】:使用醋酸鋅,柔性的1,4-二甲基咪唑丁烷(bib)和三個(gè)剛性直鏈型羧酸混合配體,在溶劑熱條件下合成了三個(gè)具有不同穿插結(jié)構(gòu)的配合物。并通過元素分析,紅外,X射線單晶衍射進(jìn)行了表征。配合物1是一個(gè)具有三種Z字鏈的四重穿插結(jié)構(gòu),配合物2是一個(gè)特殊的[2+2]型四重穿插結(jié)構(gòu),配合物3是一個(gè)具有雙核結(jié)構(gòu)單元的三重穿插結(jié)構(gòu)。通過使用熱重分析/微分熱重和差示掃描量熱(TG/DTG-DSC)技術(shù)研究了它們的熱分解過程,由熱重分析得出特殊的[2+2]型四重穿插結(jié)構(gòu)穩(wěn)定性最好,四重穿插結(jié)構(gòu)比三重穿插結(jié)構(gòu)穩(wěn)定。使用Kissinger和Ozawa-Doyle法對(duì)配合物骨架坍塌過程進(jìn)行了計(jì)算,得出配合物1-3的表觀活化能分別為276.887、318.515、149.310 k J?mol~(-1),可以得出配合物1-3的反應(yīng)速率關(guān)系為312。從熱力學(xué)和動(dòng)力學(xué)的角度來說明配合物的結(jié)構(gòu)穩(wěn)定性。其次,還對(duì)配合物1-3的熒光性質(zhì)進(jìn)行了表征。
[Abstract]:Three complexes with different intercalation structures were synthesized under solvothermal conditions using zinc acetate, a flexible 1-dimethylimidazolyl butadiene and three rigid straight chain carboxylic acid mixed ligands. The elemental analysis and IR X ray single crystal diffraction were used to characterize the structure. Complex 1 is a quaternary intercalation structure with three Z chains, complex 2 is a special [22] type quadruple intercalation structure, and complex 3 is a triple intercalation structure with double core structure. Thermogravimetric analysis / differential thermogravimetry and differential scanning calorimetry (TG- / DTG-DSC) were used to study their thermal decomposition process. The results of thermogravimetric analysis show that the special [22] type quadruple intercalation structure has the best stability, and the quadruple intercalation structure is more stable than the triple interlaced structure. Kissinger and Ozawa-Doyle methods were used to calculate the collapse process of complex skeleton. The apparent activation energy of complex 1-3 was 276.887318.515kJ / mol / L ~ (-1) ~ (-1), respectively. The reaction rate relationship of complex 1-3 was 31212K. The structure stability of the complex is explained from the viewpoint of thermodynamics and kinetics. Secondly, the fluorescence properties of complex 1-3 were also characterized.
【作者單位】: 西北大學(xué)化學(xué)與材料科學(xué)學(xué)院教育部合成與天然功能分子化學(xué)重點(diǎn)實(shí)驗(yàn)室;商洛學(xué)院化工與現(xiàn)代材料科學(xué)學(xué)院陜西省尾礦資源利用重點(diǎn)實(shí)驗(yàn)室;
【基金】:supported by the National Natural Science Foundation of China(21543001,21273137) Open Foundation of Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education,China(338080041) Open Foundation of the Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,China(2014SKY-WK002)~~
【分類號(hào)】:O641.4


本文編號(hào):1871775

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