In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Molecular orbital study of the NMR and electronic spectra of monocyanopyridines, dicyanopyridines, and 2,4,6-tricyanopyridine, published in 1970, which mentions a compound: 1195-58-0, Name is Pyridine-3,5-dicarbonitrile, Molecular C7H3N3, Formula: C7H3N3.
The Hueckel MO and SCF methods gave identical results in the determination of quantum-chem. characteristics of 10 cyanopyridines. A good agreement between the exptl. absorption curves and electronic transitions, calculated by the limited configuration interaction (LCI) method, was obtained in the electronic spectra. In the PMR spectra, there was an improved correlation with the exptl. data in the use of the SCF method only in the case of chem. shifts and π-electron d. The application of the SCF orbitals in the place of Hueckel MO in the LCI calculation of the electronic spectra did not improve significantly the description of the π-electron structure of the compounds studied.
This literature about this compound(1195-58-0)Formula: C7H3N3has given us a lot of inspiration, and I hope that the research on this compound(Pyridine-3,5-dicarbonitrile) can be further advanced. Maybe we can get more compounds in a similar way.
Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts