Abstract: The title complex was synthesized by reaction of o-phenanthroline (phen) and zinc sulfate heptahydrate in water-ethanol solution. The crystal structure was characterized by X-ray diffraction, the complex composition was determined by elemental analysis, IR and UV spectrum. The results show that the title complex belongs to triclinic system with space group P_1~- and cell parameter: a=0.8042(3) nm,b=0.8636(8) nm, c=1.1595(1) nm, α=92.067(0)°, β=92.126(0)°,γ=103.761(0) °, V=0.7809(0) nm~3, Z=2, D_c=1.016 g/cm~3, μ=0.876 mm~(-1), F_((000))=424. The Zn(Ⅱ) is coordinated by one phen, three water molecule and one SO_4~(2-). The complex exhibites a distorted octahedron geommetry. 3D supramolecular structure is constructed by hydrogen bonds.

Key words: The title complex was synthesized by reaction of o-phenanthroline (phen) and zinc sulfate heptahydrate in water-ethanol solution. The crystal structure was characterized by X-ray diffraction, the complex composition was determined by elemental analysis, IR and UV spectrum. The results show that the title complex belongs to triclinic system with space group P_1~- and cell parameter: a=0.8042(3) nm,b=0.8636(8) nm, c=1.1595(1) nm, α=92.067(0)°, β=92.126(0)°,γ=103.761(0) °, V=0.7809(0) nm~3, Z=2, D_c=1.016 g/cm~3, μ=0.876 mm~(-1), F_((000))=424. The Zn(Ⅱ) is coordinated by one phen, three water molecule and one SO_4~(2-). The complex exhibites a distorted octahedron geommetry. 3D supramolecular structure is constructed by hydrogen bonds.