title: 4,4'-Di-4-pyridyl-2,2'-dithio-dipyrimidine.
abstract: In the title mol-ecule, C(18)H(12)N(6)S(2), the C-S-S-C torsion angle is 96.12 (9)°. The dihedral angles between the pyridyl and pyrimidinyl rings are 16.7 (1) and 1.27 (9)°. In the crystal, inter-molecular π-π inter-actions between the aromatic rings [centroid-centroid distances = 3.888 (2) and 3.572 (1) Å] link mol-ecules into chains propagating in [011].
authors.affiliation: School of Chemistry and Chemical Engineering, Southeast University, Nanjing, People's Republic of China.
authors.forename: Hai-Bin
authors.initials: HB
authors.lastname: Zhu
authors.forename: Hai
authors.initials: H
authors.lastname: Wang
authors.forename: Lei
authors.initials: L
authors.lastname: Li