Conjugate ratio
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Conjugation is the overlap of one p-orbital with another across an adjacent σ bond,
resulting in the delocalization of pi electrons.

This property shows us the ratio of conjugated atoms/heavy atom count.
Conjugated atoms represent the number of atoms being part of the longest conjugated chain within the molecule.

To form such conjugation we considered the following atom types:

- sp2 or sp3 carbon
- Nitrogen
- Oxygen
- Phosphorus
- Sulfur