been fitted for each isotopomer. Deuteriumquadrupolecouplingconstants have been determined for the furan-3- d -argon complex from hyperfine splittings of the rotational transitions. A model considering the effects of large-amplitude van der Waals vibrations has been used for the determination of the intermolecular structural parameters. Argon has been located at a distance R = 3.539(2) A from the center-of-mass
摘要 脉冲喷嘴傅里叶变换微波光谱已被用于观察呋喃-3,4-d 2 -(氩) 2 范德华配合物的旋转光谱。除了先前测量的两种同位素呋喃-和呋喃-2- d - 外,还测量了呋喃-3- d -、呋喃-3,4- d 2 - 和呋喃- d 4 - 氩配合物的旋转光谱氩气。已经为每个同位素体拟合了旋转和四次离心畸变常数。已经从旋转跃迁的超精细分裂中确定了呋喃-3-d-氩络合物的氘四极耦合常数。考虑大振幅范德华振动影响的模型已用于确定分子间结构参数。氩气位于距离 R = 3 处。539(2) A 来自呋喃 - 氩络合物的呋喃质心。已经发现氩向氧移动,包括 R 和呋喃主轴 c 之间的角度 θ = 9.7(2)°。在呋喃-(氩) 2 络合物中,两个氩原子在呋喃平面的上方和下方呈现对称位置,与呋喃-氩络合物相比,R 和 θ 几乎没有变化。