catena-Poly[[[(triphenyl­phosphane)copper(I)]-di-μ-iodido-[(triphenyl­phosphane)copper(I)]-μ-[3,6-bis­(4-pyrid­yl)-1,2,4,5-tetra­zine]] acetonitrile disolvate]

The title compound, {[Cu(2)I(2)(C(12)H(8)N(6))(C(18)H(15)P)(2)]·2CH(3)CN}(n), contains centrosymmetric dinuclear Cu(2)I(2)(PPh(3))(2) units bridged by 3,6-bis­(4-pyrid­yl)-1,2,4,5-tetra­zine ligands lying also across crystallographic inversion centers, giving a chain structure in the ab plane. The distorted tetra­hedral Cu(I) atoms in the dinuclear unit are coordinated by two bridging iodide anions, one pyridine N atom from the substituted tetra­zine ligand and one terminal triphenyl­phosphine P-atom donor. The Cu⋯Cu distance is 2.8293 (12) Å, implying a weak Cu⋯Cu inter­action.