| The Schiff base complexes containing oxime play an important role of stability and reactivity of the molecules in analytical and biochemistry. Those complexes have attracted much attention recently because of their potential applications in biochemical models. Therefore, the author carried out the study on syntheses and structure chemistry of Ni(II) complexes with Schiff base ligands containing oxime. The main results of the thesis are summarized below.1.11 complexes of this thesis have been prepared. The complexes and ligands are shown as following.NiL1 (1), NiL1·0.5H2O (2), NiL2 (3), NiL3 (4), NiL4 (5), NiL5 (6), NiL6 (7), NiL7 (8), NiL8 (9), NiL9 (10), NiL10 (11)H2L1 : R = CH3, X = H; H2L : R = CH3, X = OCH3; H2L5 : R = CH3, X = OH; H2L6: R = OCH2CH3, X = H; H2L7: R = OCH2CH3, X = OCH3; H2L8: R = OCH2CH3, X = OH;(2) H2L3: R = CH3, X = CH3, Y=CH3; H2L4: R = CH3, X = C5H3OS, Y=CF3;(3)H2L9: R =C6H5,;(4) H2L10: R = C6H5, ;1 6 have been synthesized by the reaction of Ni(CH3COO)2-4H2O, isonitrosoacetylacetone, o-phenylenediamine and keto/aldehyde. 7 9 have been synthesized by the reaction of Ni(CH3COO)2-4H2O, isonitrosoethylacetoacetate, o-phenylenediamine and keto/aldehyde. The complexes 10 and 11 have been synthesized by the reaction of Ni(CH3COO)2-4H2O, isonitrosobenzoylacetonte, ethylenediamine and keto/aldehyde.2. The crystal structure of NiL^l), NiL1-0.5H2O(2), NiL9(10) were determined by single-crystal X-ray diffraction. The structures of the Nickel(II) complexes with unsymmetric quadridentate Schiff base containing oxime group have an angular distortions from a regular square-planar geometry. The doubly deprotonated Schiff base ligand is quadridentate and binds to the Ni(II) via one oximo nitrogen atom, two imine nitrogen atoms and one deprotonated hydroxy oxygen atom. The strong face-to-face n-n stacking interactions exist between adjacent molecules, which lead to one dimensional chain structure in NiL1 (1) and... |
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