S4N4 und seine Derivate: [Cu(CH3CN)Cl2]2S2N2, ein Übergangsmetallkomplex mit dem S2N2-Ligand

S₄N₄ and its Derivatives: Cu(CH₃CN)CL₂]₂S₂N₂, a Transition Metal Complex with the S₂N₂ Ligand S₄N₄ reacts with CuCl₂ · 2H₂O in acetonitrile to give among other products the polymer copper(II) complex Cu(CH₃CN)Cl₂]₂S₂N₂, This complex crystallizes in the space group P2₁/c with a = 9.635(4), b = 7.270(4), c = 10.009(6) Å, β = 93.16(6)°, and Z = 2. An X-ray structure analysis (R = 0,065) shows the crystal to.contain parallel chains with copper atoms bridged by Cl and S₂N₂ bridges. The coordination of the Cu atom is square pyramidal. The S₂N₂ ring is planar. The SN bond distances are 1.633 and 1.641 Å.