The microwave spectra of four isotopologues of (E)-1-chloro-1,2-difluoroethylene, and additionally, the spectra of two isotopologues of the complex formed between argon and (E)-1-chloro-1,2-difluoroethylene are obtained in the 5.6–18.1 GHz region using broadband chirped pulse Fourier transform microwave spectroscopy. The argon atom is determined to occupy a position out of the symmetry plane of the haloethylene where it can interact most strongly with the fluorine atom and the chlorine atom located geminal to each other as well as the π electron density at the end of the double bond on carbon atom C-1. As in the previously studied argon-2-chloro-1,1-difluoroethylene complex, the argon atom interacts most strongly with a fluorine atom and the chlorine atom regardless of whether they are located geminal or cis to each other.

( E )-1-氯-1,2-二氟乙烯的四种同位素体的微波谱图，以及氩与 ( E )形成的络合物的两种同位素体的谱图)-1-氯-1,2-二氟乙烯使用宽带啁啾脉冲傅里叶变换微波光谱在 5.6–18.1 GHz 区域获得。氩原子被确定占据卤代乙烯对称平面外的一个位置，在那里它可以与彼此成对的氟原子和氯原子以及双键末端的 π 电子密度发生最强烈的相互作用在碳原子 C-1 上。与之前研究的氩-2-氯-1,1-二氟乙烯络合物一样，氩原子与氟原子和氯原子的相互作用最强，无论它们是成对还是顺式排列。