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Syntheses, Characterization And Crystal Structures Of Asymmetric Salamo-type Ligands And Their Ni(Ⅱ) And Zn(Ⅱ) Complexes

Posted on:2016-12-27Degree:MasterType:Thesis
Country:ChinaCandidate:G X AnFull Text:PDF
GTID:2271330464474183Subject:Inorganic Chemistry
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When chemistry is discussed, it is inorganic chemistry that is talked about by us firstly, which occupies the highest time of researching as well as the most developing in industry. When time and science have gone futher more, inorganic chemistry has always been improving. It can be generally observed by these following aspects: researching targets, defined macroly to microly, methods, operated qualitatively to quantitatively, ranges, involved singlely to interrelationally. Complexes that are made up of inorganic metal ions and organic ligands are generally becoming a hot topic in inorganic chemistry recently. As a consequence, Salamo ligands and their complexes are focused by us automatically. Salen compounds are synthesized by aldehydes and ethylenediamine, when oxygen is put into them, these compounds contains >C=N-O- group, which we define them as Salamo compounds. While Salen is well-sophisticated, Salamo compounds have more advantages on stability, especially the steadiness to hydrolysis. Scores of mental ions can have a reaction with Salamo, so different Salamo complexes that vary from one structure to another, properties as well. In application, some Salamo complexes that owns cavities can identify some metal ions characteristically, some of them can be developped into catalysts in stereochemistry, some of them play a fatal role in photoelectric materials, even some of them can be improved to be antiseptics, meanwhile, they can also simulate gigantic molecule that owns bio-activity, undoubtfully, some Salamo complexes are so promising in magnetic property that researchers pay much attention to them. Although many scientists have synthesized some symmetric Salamo compounds, papers on asymmetric ligands and their complexes are uncommon yet. The structure of these ligands can be enriched by changing different substituents. Furthermore, these ligands can make a reaction with different metal ions, which can increase the amount of Salamo compounds. Thanks to owning a great amount, Salamo compounds which owns special properties can absolutely chosen to develop practical applications.With these backgrounds, the thesis and its experiments are designed as follow.In this thesis, 1,2-diaminooxygenethane and its intermediate product are synthesized firstly. Then, 2,5-dihydroxyacetophenone and 3-hydroxylsalicylaldehyde is reacted by 1,2-diaminooxygenethane,thus its final product is defined as H4L1(ketone asymmetric Salamo ligand). 3-hydroxylsalicylaldehyde and 4-Methoxysalicylaldehyde is reacted by 1,2-diaminooxygenethane, and its final product is defined as H3L3(aldehyde asymmetric Salamo ligand). 4-methoxysalicylaldehyde and 3,5-dibromosalicylaldehyde is reacted by 1,2-diaminooxygenethane, then its final product is defined as H2L2(aldehyde asymmetric Salamo ligand). After these compounds are managed to acquire, they are characterized and determined by different approaches.Step by step, different approaches, such as hydro-thermal method, gas phase diffusion method, cold-hot solution, are applied to cultivate single crystal. Finally, one crystal of ligand and four crystals of complexes have been acquired, they are [H4(L1)(H2O)], [Ni(L2)(H2O)(CH3OH)], [{Zn(L3)(μ-OAc)Zn(CH3CHOHCH3)}2], [{Zn(L3)(μ-OAc)Zn(CH3CH2CH2OH)}2], [{Zn(L3)(μ-OAc)Zn(CH3CH2OH)}2] respectively. XRD is chosen to determine their internal structures, and their fundamental crystal data are enumerated as following:[H4(L1)(H2O)]: Empirical formula, C17H20N2O7, crystal system, monoclinic, formula weight, 364.35, cell parameters: α = 90°, β = 91.081(5)°, γ = 90°, V = 1692.0(7), a = 4.6318(11) ?, b =13.472(3) ?, c = 27.120(7) ?, space group: P21/n, Z = 4, R1 = 0.0833, w R2 =0.2324.[Ni(L2)(H2O)(CH3OH)]: Empirical formula, C17H18Br2N2 Ni O7, crystal system, triclinic, formula weight, 585.12, space group: P-1, cell parameters: α = 86.459(6)°, β = 73.224(6)°, γ = 86.643(6)°, a = 7.5554(6) ?, b = 11.4115(9) ?, c = 12.4771(7) ?, V= 1027.07(13), Z = 2, R1 = 0.0359, w R2 = 0.0983.[{Zn(L3)(μ-OAc)Zn(CH3CHOHCH3)}2]: Empirical formula, C44H52N4Zn4O18, crystal system, triclinic, formula weight, 1186.46, space group: P-1, cell parameters: α = 89.624(19)°, β = 74.11(2)°, γ = 69.84(2)°, a = 9.571(3) ?, b = 11.691(2)(9) ?, c = 12.151(3) ?, V = 1027.07(13), Z = 2, R1 = 0.0490, w R2 = 0.1080.[{Zn(L3)(μ-OAc)Zn(CH3CH2CH2OH)}2]: Empirical formula, C44H52N4Zn4O18, crystal system, triclinic, formula weight, 1211.5(4), space group: P-1, cell parameters: α = 88.357(14)°, β = 72.804(14)°, γ = 69.747(15)°, a = 9.4875(14) ?, b = 11.898(2)(9) ?, c = 12.016(2) ?, V = 1211.54, Z = 2, R1 = 0.0545, w R2 = 0.1280.[{Zn(L3)(μ-OAc)Zn(CH3CH2OH)}2] : Empirical formula, C42H48N4Zn4O18, crystal system, triclinic, formula weight, 1158.32, space group: P-1, cell parameters: α = 106.392(8)°, β = 92.669( 8)°, γ = 111.299(8)°, a = 8.1960(7) ?, b = 9.8127(8) ?, c = 16.5428(15) ?, V = 1172.52, Z = 1, R1 = 0.0722, w R2 = 0.1558.
Keywords/Search Tags:Salamo ligand, Ni(Ⅱ) Complex, Zn(Ⅱ) complex, Crystal structure, Characterization
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