One- and Two- Dimensional Copper(I) Halide Based Coordination Polymers with Bridging Pyridazine or Pyrimidine Ligands

Z. Naturforsch. 54 b, 1175-1180 (1999); received June 9, 1999 Copper(I) Halides, Pyridazine, Pyrimidine, Coordination Polymers 1-Dimensional coordination polymers J. [CuX(/i-pydz)] 1 3 (X = Cl, Br, I; pydz = pyrid­ azine) may be prepared by self-assembly in acetonitrile solution at 120 °C (1) or room temper­ ature (2, 3). Individual chains contain (CuX)2 rings and dimeric [Cu(^-pydz) ] 2 substructures. At a 2:1 molar ratio treatment of Cul with pydz in acetonitrile affords the lamellar complex ^ [(Cul)2(/i-pydz)] (4) whose novel ^ [(Cul)2] sheets contain fused 4-, 6and 8-membered (Cul)„ rings and are stabilized by pydz bridging between adjacent Cu atoms. In contrast, l_ [(CuBr)2(/i-pym)2 ] (5) (pym = pyrimidine) contains separated J. [CuBr] chains and (CuBr)2 rings as participating building units.