Valency interaction formula
The Valency Interaction Formula, or VIF provides a way of drawing or interpreting the molecular structural formula based on molecular orbital theory. Valency Points, VP, dots drawn on a page, represent valence orbitals. Valency Interactions, VI, that connect the dots, show interactions between these valence orbitals.
Chemical deductions are made from a VIF picture with the application of two pictorial rules. These are linear transformations applied to the VIF structural formula as a quantum operator. Transformation by the two rules preserves invariants crucial to the characterization of the molecules electronic properties, the numbers of bonding, non-bonding, and anti-bonding orbitals and/or the numbers of doubly, singly, and unoccupied valence orbitals. The two pictorial rules relate all picture with the same electronic properties as characterized by these invariants.
A thorough presentation of VIF is available through the open access journal symmetry.[1]
See also
References
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