Add time:08/05/2019         Source:sciencedirect.com

We have employed conventional ab initio and density functional theory methods to study the electronic properties such as the mean static dipole polarizability, α¯, anisotropy of the polarizability, Δα, and dipole moment, μ, of YTTRIUM BROMIDE (cas 13469-98-2). The bond length dependence of properties is determined at different levels of theory and appropriate expansions around experimental internuclear distance have been presented. Moreover, the first and second geometrical derivatives for each property are quantified and their level of theory dependence has been analyzed. To study the effect of molecular rotation and vibration on the electronic properties, the rovibrational corrections have also been carried out. It is found that these corrections are less pronounced for considered properties of YBr. In all calculations, the electron correlation effects have been considered and discussed. The obtained results show that the electron correlation is more significant in the calculation of the mean and the anisotropy of dipole polarizability.

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