derived from azines of diethylketone and 4-phenylcyclohexanone form charge-transferπ-complexes with 1,2,4,5-tetracyanobenzene of the composition 2 : 1. Black-purple crystals of π-complexes contain endless molecular chains with short P⋅⋅⋅P contacts between DDP molecules and short (Csp2−H⋅⋅⋅N) contacts between TCNB molecules. The degree of charge transfer is estimated at ∼0.3e from two DDP molecules.