| In the past twenty years, the field of coordination complexes has become one of the frontiers among inorganic chemistry, crystallization chemistry and materials chemistry and is currently rapidly expanding. However, Synthesis and structural charaterization of metal coordination complexes containing N-donor ligands remains a hot topic in coordination chemistry. As an important ligand, 1,10-phenanthroline has been extensively used in most fields of chemistry such as analytical chemistry, photoredox chemistry, biochemistry and supramolecular chemistry. The unit is rigid, and provides two aromatic nitrogens whose unshared electron pairs are beautifully placed to act cooperatively in binding transition metal cations. Considering the unique combination of chemical stabilities, redox properties, luminescence emission and excited state lifetime, most of the work on phenanthroline derivatives has been prompted by the intense current interest in their catalytic, redox, and photoredox properties, biological activity, complexation activity and in their novel coordination chemistry. 1,10-Phenanthroline carrying N-donor atoms and being excellent n acceptors have shown ability to stabilize low-valence metal complexes and have a marked influence on the coordination geometry.We select the chelated ligand as 1,10-phenanthroline which possessing the N atom with strong coordinated ability. Two N atoms from the didentate ligand 1,10-phenanthroline may occupy two coordination positions of metal ions, thus the feasibility of coordination is counteracted at space, and it can be synthesized low dimensional or layer compound. We have synthesized eight coordinated polymers with these ligands above using hydrothermal motheds: [Cu2(ophen)2]H2O, Zn2[(ophen)2Cl2], [Cu2( u-OH)2(phen)2(H2O)2] (C8H4O4)(4H2O),{Cd2[(phen)2Cl2]}n,Cd2[(phen)2Cl2]Cl2,Cd2[(phen)2(C6H6O2 )2Cl2],[Cu(HL)3H2O]2H2O and[NH4]2[Co2(HL)3(phen)3]3H2O(ophen=2-hydroxy-l,10-phenanthroline, H3L=orotic acid, phen= 1,10-phenanthroline). The synthesis and characterization of the coordination complexes are introduced detailedly in this thesis. It is divided into five chapters.In the first chapter, one briefly introduce about the research progress of phenanthroline and its derivative's coordination complexes and the concept of hydrothermal synthesis are given, as well as the current survey, research significance in this thesis.In the second chapter, the two complexes with 2-hydroxy-1,10-phenanthroline ligand, {Zn2[(ophen)2Cl2 > [Cu2(ophen)2] .H2O }, have been synthesized hydrothermally and characterized by IR, Ramam, UV, Flu, ICP and X-ray diffractometry. Zn2[(ophen)2Cl2] with triclinic, P-l, cell parameters: a = 8.0257(18), b = 8.5566(19), c = 9.175(2) A;a =117.552(3), 0 =107.516(2), Y =90.553(3)° . The coordination configuration around two Zn2+ ions is tetrahedron. The distance of Zn***Zn is 3.773 A. The crystal of [Cu2(ophen)2]H2O is monoclinic, C2/c, cell parameters: a = 30.344(3), b = 3.6676 (3), c = 19.1508(17) A, 0=107.578(1)°, The two copper coordination geometries are planar square. The bond-length of two Cu atoms is 2.497(1) A, with the strong metal-metal interaction. We obtain two structural evidences for the Gillard mechanism, and suppose the possible route for the formation of the Zn2[(ophen)2Cl2] complex.In the third chapter, we have designed and hydrothermally synthesized Cu complexes [Cu2( u -OH)2(phen)2(H2O)2](C8H4O4)(4H2O), and also obtained its crystal structure. The result shows that it belongs to triclinic, P-l, cell parameters: a = 9.295(4), b = 10.639(5), c = 11.258(5) A, a = 114.603(8), p = 112.540(8), y = 95.065(8)°. It consists of a doiible-hydroxo-bridged dinuclear complex cation [Cu*"Cu=2.911(3) A], a terephthalate anion and eight water molecules. Both cation and anion possess inversion symmertry. A network of n - ji stacking interaction of aromatic rings from adjacent phen groups and O-H**'O hydrogen bonds stabilizes the 3D supramolecular structure. Moreover, we hydrothermally synthesized three Cd complexes: {Cd2[(phen)2Cl2]}n, Cd2[(phen)2Cl2]Cl2, Cd2[(phen)2(C6H6O2)2Cl2], and alsodetermined theirs crystal structures.In the fourth chapter, we have gotten a co-crystal compound consisting of mononuclear neutral [Co(HL)(phen)2] molecule, [Co(HL)2 (phen)]2' anions, two amino-cations and three water molecules linked together through electrostatic interactions and hydrogen bonds, namely [NH4]2[Co2(HL)3 (phen)3]3H2O, crystallizes in the triclinic space group P-l with a = 8.818(5), b = 16.109(9), c = 19.090(11), a = 103.934(14), 0 = 101.993(14), y = 105.790(11)°. The two cobalt coordination geometries are two independent different slightly distorted octahedral arrangements. In addition, a Cu complex, [Cu(HL)3H2O]2H2O, is measured by X-ray single diffraction.In the fifth chapter, a concise conclusion about this work and an outlook are presented.The significances of this work lie in two aspects. Firstly, some novel metal complexes with phenanthroline and its derivative ligands were synthesized and putting up particular structure. Secondly, the fact of the a -carbon atom hydroxylation in 1,10-phenanthroline is proved again.
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