Molecular Beam Scattering Experiments on Benzene−Rare Gas Systems: Probing the Potential Energy Surfaces for the C6H6−He, −Ne, and −Ar Dimers†
Molecular Beam Scattering Experiments on Benzene−Rare Gas Systems: Probing the Potential Energy Surfaces for the C6H6−He, −Ne, and −Ar Dimers†
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苯稀有气体系统的分子束散射实验：探测 C6H6−He、−Ne 和 −Ar 二聚体的势能面†
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
V. Aquilanti
中科院分区：
文献类型：
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作者：
D. Cappelletti;M. Bartolomei;F. Pirani;V. Aquilanti
分子束散射测量的总截面已进行了在一个足够低的能量在热范围内，并在角分辨率足够高，允许第一次观察的“荣耀”干涉效应的苯分子与He，Ne和Ar的碰撞。C6 H6 −稀有气体二聚体中相互作用的范围、强度和各向异性的信息已经从总截面的能量依赖性分析中获得。在苯-He、-Ne和-Ar二聚体中，最稳定的几何构型的键能分别为0.98、1.95和4.20 kJ/mol，在所有情况下，稀有气体原子位于苯的6重对称轴上的面外构型，距离分别为0.323、0.331和0.359 nm。目前的调查结果表明，所有三个系统的井深减少了一个因素2或5和相应的距离增加了40%或70%，分别为平面稀有气体方法垂直于...
Molecular beam scattering measurements of total cross sections have been performed at a sufficiently low energy in the thermal range and at an angular resolution high enough to permit for the first time the observation of the “glory” interference effect in collisions of a benzene molecule with He, Ne, and Ar. Information on range, strength, and anisotropy of the interaction in the C6H6− rare gas dimers has been obtained from the analysis of the energy dependence of the total cross sections. In benzene−He, −Ne, and −Ar dimers bond energies are 0.98, 1.95, and 4.20 kJ/mol, respectively, for the most stable geometry, in all cases an out-of-plane configuration with the rare gas atom located on the 6-fold symmetry axis of benzene, at distances of 0.323, 0.331, and 0.359 nm, respectively. The results of the present investigation show that well depths for all three systems decrease by a factor 2 or 5 and corresponding distances increase by 40% or 70% for planar rare gas approaches respectively perpendicular to a...