Synthesis and Crystal Structures of Two Zinc(II) Complexes Derived from N-Isopropyl-N'- 1-(2-Methoxyphenyl)methylideneethane- 1,2-Diamine

摘要

Two isostructural mononuclear zinc(II) complexes, ZnLBr2 (I) and ZnLI2 (II), derived from the Schiff base N-isopropyl-N'- 1 -(2-methoxyphenyl)methylideneethane-1,2-diamine (L), have been synthesized and characterized by elemental analysis, IR spectra, and X-ray single-crystal diffraction. The crystal of I is monoclinic: space group P2_1/n, a = 14.476(1) A, b = 7.327(1) A, c = 17.528(1) A, β = 101.153(1)°, V= 1824.0(3) A~3, Z= 4. The crystal of II is monoclinic: space group P2_1/n, a = 14.482(1), b = 7.329(1), c = 17.528(1) A, β = 101.195(2)°, V= 1825.0(3) A~3, Z= 4. The Zn atom in each complex is four-coordinated in a tetrahedral coordination, with one imine N and one amine N atoms of L, and two halide atoms. Both complexes and the Schiff base were tested in vitro for their antibacterial activities.