Analytical Evaluation of Multicenter Integrals of r12−1 with Slater-Type Atomic Orbitals IV. Four-Center Integrals by Taylor Series Method

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Abstract
The four‐center integral of r12−1 with Slater‐type atomic orbitals is evaluated analytically. The result, obtained after expanding r12−1 in a Taylor series, is for general values of the n, l, m , and ζ parameters of the Slater‐type orbitals and of the internuclear distance vectors, R1, R2 , and R .