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 Synthesis and characterization of non-aggregating octa-substituted azaphthalocyanines bearing bulky phenoxy substituents, published in 2008-09-08, which mentions a compound: 56413-95-7, Name is 5,6-Dichloropyrazine-2,3-dicarbonitrile, Molecular C6Cl2N4, Formula: C6Cl2N4.
The synthesis and characterization of two novel series of octaazaphthalocyanines (AzaPc) bearing bulky phenoxy substituents are described. Target precursors to AzaPcs derivatives were prepared by using a nucleophilic aromatic substitution reaction between sterically hindered phenols (2,6-di-iso-propylphenol and 2,6-diphenylphenol) and 5,6-dichloropyrazine-2,3-dicarbonitrile. UV-vis and 1H NMR analyses confirm that steric isolation of the AzaPcs cores enforced both in the solution and in the solid state. This study explores the effectiveness of the steric factor imposed by the applied bulky phenoxy substituents on the packing behavior of azaphthalocyanines and thereby improving their solubility and photo-phys. properties.
There are many compounds similar to this compound(56413-95-7)Formula: C6Cl2N4. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.
Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate