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A K-dependent adiabatic approximation to the renner-teller effect for triatomic molecules

机译:三原子分子的Renner-Teller效应的K依赖绝热近似

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A K-dependent adiabatic approach is suggested to study the Renner-Teller effect in triatomic molecules using a two-dimensional Hilbert space approximation in the electronic degree of freedom. The theory is developed in hyperspherical coordinates, and approximately includes the electronic spin-orbit interaction. The adiabatic Hamiltonians are expressed in terms of a K-dependent effective potnetial energy surface. Eigenpairs are calculated by solving the time-independent Schrodinger equation, which is represented in a mixed grid/basis set. THe method is applied to the A<-X band system of bromomeethylene (H/DCBr). The results obtained show that the Renner-Teller effect in this molecule is pronounced, particularly in the excited A ~1A" state. The results are compared to recent experimental measurements and good agreement is found.
机译:建议使用K依赖的绝热方法,以电子自由度的二维Hilbert空间近似研究三原子分子中的Renner-Teller效应。该理论是在超球面坐标系下发展的,大约包括电子自旋轨道相互作用。绝热哈密顿量以依赖于K的有效势能面表示。本征对是通过求解与时间无关的薛定inger方程来计算的,该方程以混合网格/基集表示。该方法被应用于溴乙烯(H / DCBr)的A <-X谱带系统。得到的结果表明该分子中的Renner-Teller效应是明显的,特别是在激发的“ A〜1A”状态。将该结果与最近的实验测量结果进行比较,发现了很好的一致性。

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