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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Ab Initio Study of the Interaction Hyperpolarizabilities of H-Bond Dimers between Two π-Systems
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Ab Initio Study of the Interaction Hyperpolarizabilities of H-Bond Dimers between Two π-Systems

机译:从头开始研究两个π系统之间H键二聚体的相互作用超极化性

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摘要

The effects of intermolecular interaction on dipole moment (μ), the mean (α) and anisotropy (Δα) of the polarizability, and the first and second hyperpolarizabilities (β and γ, respectively) for four hydrogen bond dimers between two π-systems (HCN…HCN, HNC…HCN, HCN…HNC, and HNC…HNC) have been calculated in the finite-field approach. The properties were calculated at the MP4/d-aug-cc-pVTZ level. Intermolecular interaction significantly increases the first hyperpolarizabilities of four dimers between two π-systems (177% for HCN…HCN, 47.9% for HNC…HCN, 65.3% for HCN…HNC, and 37.9% for HNC…HNC). Intermolecular interaction effects of the second hyperpolarizabilities are 3.0% for HCN…HCN, -3.1% for HNC…HCN, 5.4% for HCN…HNC, and -2.1% for HNC…HNC. For the four dimers, electron correlation effects are important to the total and interaction electric properties.
机译:分子间相互作用对两个π系统之间的四个氢键二聚体的偶极矩(μ),极化率的平均值(α)和各向异性(Δα)以及第一和第二超极化率(分别为β和γ)的影响( HCN…HCN,HNC…HCN,HCN…HNC和HNC…HNC)已通过有限域方法进行了计算。在MP4 / d-aug-cc-pVTZ水平上计算性能。分子间相互作用显着增加了两个π系统之间四个二聚体的首次超极化性(HCN…HCN为177%,HNC…HCN为47.9%,HCN…HNC为65.3%,HNC…HNC为37.9%)。第二超极化性的分子间相互作用效应对于HCN…HCN为3.0%,对于HNC…HCN为-3.1%,对于HCN…HNC为5.4%,对于HNC…HNC为-2.1%。对于四个二聚体,电子相关效应对总的和相互作用的电学性质很重要。

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