
Valency Interaction Formula
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High Quality Content by WIKIPEDIA articles! The Valency Interaction Formula, or VIF is a method for drawing molecular structural formulas based in quantum mechanics. The mathematical basis for VIF was formulated by Oktay Sinanoglu in a series of five papers published in 1984. In the first implementations of the VIF method, the VIF pictures represented one-electron Hamiltonian operators. Alia has shown how the method is easily extended so that VIF pictures represent one-electron density operators and the practical value of doing this.