tetraoxatetrathiahemicarceplexes were synthesized and characterized. Their carceroisomers and half-twistomers were simultaneously observed by 1H NMR spectra at low temperature. The largest isomerization energy barrier of carceroisomers was 15.5 kcal mol−1 and the isomerization energy barriers of twistomers are significantly larger than those of carceroisomers.
合成并表征了四个新的C 4v四氧杂四环
硫杂血脑血管复合物。在低温下通过1 H NMR谱同时观察到它们的同分异构体和半数同聚物。立体异构体的最大异构化能垒为15.5 kcal mol -1,而扭转异构体的异构化能垒显着大于立体异构体。