Synthesis and characterization of two novel isostructural polymeric 1D mono-halo-bridged octahedral copper (II) chains with a diaza-diamine ligand

Two novel isostructural (Π = 0.0045, Iv = 93.292) one-dimensional mono-halo-bridged octahedral copper (II) polymeric complexes [Cu(L)Cl]n(ClO4)n (1) and [Cu(L)Br]n(ClO4)n (2) (L = 1,9-diamino-5-methyl-5-nitro-3,7-diazanonane) were prepared and characterized. X-ray structure analysis indicates that in both 1 and 2, independent consecutive [Cu(L)X]+ (X = Cl or Br) cations with crystallographic Cs symmetry propagate through the a glide plane to give 1D polymeric chains.