A study on the influence of intramolecular OH⋯X (X = O and S) hydrogen bond formation on the aromaticity of heptafulvene derivatives, in which the methylene is replaced by AlH2-, BH2-, NH and O groups

- Investigating the influence of the H-bonding on aromaticity of hepta-fulvenes.
- H-bonding influences the magnetic dimensions of aromaticity in hepta-fulvens.
- The variations of NICS index related to properties H-bonding in hepta-fulvenes.
- OH⋯O intramolecualr H-bonding is more effective than OH⋯S one.