Synthesis and Crystal Structure of Two-dimensional Network Supramolecular Complex [Cu(dafo)2(H2O)2](ClO4)2

In an attempt to synthesize supra-molecular complex of copper(II) with mixed ligands in a solution reaction of Cu(ClO 4) 2·6H 2O with 4,5-diazafluorene-9-one (dafo) and o-phthalic acid, the bright blue column-like crystal [Cu(dafo) 2(H 2O) 2]-(ClO 4) 2 was obtained. Its structure was determined by single-crystal X-ray diffraction study. The crystal belongs to monoclinic system, space group P2(1)/n with cell dimensions: a=0.7947(3) nm, b=1.2021(5) nm, c=1.3190(5) nm, α=90.000(5)°, β=90.000(5)°, γ= 90.000(5)°, V=1.2600(9) nm 3, Z=2, F(000)=670, M r=662.83, D c=1.747 g/cm 3, μ (Mo Kα)=1.154 mm -1, R 1=0.0455, wR 2=0.1041. The analysis of the crystal structure indicates that the complex has a two-dimensional network structure which is formed by hydrogen bonds.