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Calculation of Spectroscopic Parameters of Diatomic Molecules with an Open Electron Shell

机译:用开放电子壳的硅藻分子光谱参数计算

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The spectroscopic parameters of the BeH and CH molecules with an open electron shell are calculated in the basis of the Slater functions. An analytical expression for the total electron energy of molecules with an open electron shell is obtained. The total electron energy of the BeH and CH molecules was calculated by the Hartree-Fock-Roothaan (HFR) method for seven internuclear distances, including the equilibrium internuclear distance. A table of total energy values is constructed depending on the internuclear distance R. The total energy of a diatomic molecule is approximated as a third-degree polynomial in R. Applying the least squares method to energy values from the above-mentioned table, an analytical formula for the total energy of the BeH and CH molecules is obtained as a function of R. The analytical formula for E(R) has allowed the spectroscopic parameters omega(e) (harmonic vibrational frequency), omega(e)x(e) (anharmonicity constant), B-e (rotational constant), and alpha(e) (rovibrational interaction constant) to be calculated.
机译:基于层函数计算BEC和CH分子的分子参数和开放电子壳。得到了具有开放电子壳的分子总能量的分析表达。 BET和CH分子的总电子能量由Hartree-Fock-Roothaan(HFR)方法计算七个七个核心距离,包括平衡的核距离。根据中核距离R构建总能量值的表。硅藻分子的总能量近似为R的三度多项式。将最小二乘法施加到上述表中的能量值,分析作为R的函数获得BEN和CH分子的总能量的公式。E(R)的分析配方允许光谱参数ω(e)(谐波振动频率),ω(e)x(e) (Anharmonicity常数),是(旋转常数)和α(e)(roviblationalaction常数)进行计算。

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