Abstract
In this work, the applicability of the unsymmetrical one-range addition theorems obtained from the use of complete orthonormal sets of Ψα-exponential type orbitals (Ψα-ETOs, where α = 1, 0, − 1, − 2, ...) to the study of electronic structure of molecules is demonstrated using minimal basis sets of Slater type orbitals (STOs). As an example of application of unsymmetrical one-range addition expansion method to evaluate the multicenter electronic integrals, the calculation has been performed for the ground state of BH 3 molecule. The results of computer calculations for the orbital and total energies, and linear combination coefficients of symmetrized molecular orbitals are presented.
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Guseinov, I.I., Mamedov, B.A., Andic, Z. et al. Use of unsymmetrical one-range addition theorems of Slater type orbitals in molecular electronic structure determination. J Math Chem 45, 702–708 (2009). https://doi.org/10.1007/s10910-008-9352-0
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DOI: https://doi.org/10.1007/s10910-008-9352-0