Spectroscopic and conductometric studies of molecular complex formation between 2,4,6-trinitrophenol and diaza-18-crown-6, tetraaza-14-crown-4 and cryptand C222 in 1,2-dichloroethane solution.
Spectroscopic and conductometric studies of molecular complex formation between 2,4,6-trinitrophenol and diaza-18-crown-6, tetraaza-14-crown-4 and cryptand C222 in 1,2-dichloroethane solution.
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1,2-二氯乙烷溶液中 2,4,6-三硝基苯酚与 diaza-18-crown-6、tetraaza-14-crown-4 和穴状配体 C222 之间分子复合物形成的光谱和电导研究。
DOI：
10.1016/j.saa.2005.05.023
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. Shamsipur
中科院分区：
文献类型：
--
作者：
Masoumeh Hasani;M. Irandoust;M. Shamsipur
用分光光度法和电导法研究了2,4,6-三硝基苯酚（TNP）与氮杂取代的大环重氮-18-冠-6 （DA18C6）、四氮-14-冠-4 （TA14C4）和隐式化合物C222在1,2-二氯乙烷溶液中的分子配合物的形成。基于两种物理化学技术的摩尔比和连续变化研究清楚地揭示了溶液中1:1和2:1 （TNP：大环）加合物的形成。所得到的配合物的形成也被1h NMR和IR光谱研究证实。通过计算机拟合相应的摩尔比数据，计算了所得配合物的形成常数。所得到的配合物的稳定性按C222≈TA14C4>DA18C6的顺序变化。
The formation of molecular complexes between 2,4,6-trinitrophenol (TNP) and aza-substituted macrocycles diaza-18-crown-6 (DA18C6), tetraaza-14-crown-4 (TA14C4) and cryptand C222 in 1,2-dichloroethane solution was investigated spectrophotometrically and conductometrically. The mole ratio and continuous variations studies based on both physicochemical techniques employed clearly revealed the formation of both 1:1 and 2:1 (TNP:macrocycle) adducts in solution. Formation of the resulting complexes was also confirmed by1H NMR and IR spectroscopic studies. Formation constants of the resulting complexes were evaluated from computer fitting of the corresponding mole ratio data. Stability of the resulting complexes was found to vary in the order C222≈TA14C4>DA18C6.