作者:Mohammad Ali Zarei、Dariush Fallah、Masoud Faal
DOI:10.1016/j.molstruc.2023.136658
日期:2024.1
investigated for structural studies by 1H NMR in chloroform and dimethyl sulfoxide solvents. The very special structure of 1,4-dinitrocyclohexane-2,3,5,6-tetranitrate in the chair conformer was well observed in the chloroform solvent, and in this solvent, the chair conformer was observed without converting the two conformers. While in dimethyl sulfoxide solvent, no such special conformer was observed
由于椅型和船型构象异构体的存在,表征环己烷结构非常困难。这些构象异构体不断相互转化,并观察到它们的中间形式。在这项研究中,合成了 1,4-二硝基环己烷-2,3,5,6-四硝酸酯,并在氯仿和二甲亚砜溶剂中通过 1H NMR 进行了结构研究。1,4-二硝基环己烷-2,3,5,6-四硝酸酯的椅式构象异构体中非常特殊的结构在氯仿溶剂中可以很好地观察到,并且在该溶剂中,观察到椅式构象异构体而没有转换两个构象异构体。而在二甲亚砜溶剂中,没有观察到这种特殊的构象异构体。本研究表明,NMR 溶剂的选择会影响 1,4-二硝基环己烷-2,3,5,6-四硝酸酯的空间结构,