Noncovalent Sulfoxide–Nitrile Coupling Involving Four Center Heteroleptic Dipole–Dipole Interactions between the Sulfinyl and Nitrile Groups

The 4-X-5-nitro substituted phthalodinitriles (X = Br 1, I 2) were crystallized from Me2SO solutions affording crystalline adducts (1–2)•Me2SO, which were characterized by X-ray crystallography at ...