Review. Benzene on the basis of the three-electron bond. Theory of three-electron bond in the four works with brief comments (review). 2016. - страница 10

If aromatic system does not have inner protons, then outside protons will give signals in the area of weaker field (one of the features of aromatic compounds).

It is clear that in case of antiaromatic systems when there is no interaction (attraction) through the cycle, because central electrons have similar spins and push away, change in electron density in the centre of the cycle and outside the cycle will be reverse to aromatic systems.

Further we will continue demonstration of construction of organic and inorganic compounds.

Pyridine

Pyrimidine

Pyridazine

Pyrazine

1,3,5-Triazine

Quinoline

Isoquinoline

Indole

Purine

Furan, thiophene, pyrrole

Oxazole, thiazole, imidazole

Pyrazole

1,2,4-Triazole

1H-1,2,3-Triazole

Cyclopentadienyle anion

Carboxylate anion

Nitro compounds

Sulfonate anion

Organic acid amides and thioamides

Urea and thiourea

Guanidinium cation

Sodium malon ether

Sodium acetoacetic ether

Alyle cation

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