| This dissertation focuses on the synthesis and solid properties of bivalent metal complexesderived from the ligands of sorts as Schiff bases and aromatic carboxylic acids. Of particular, thestructures of complexes of Schiff base ligands, demonstrating unusual C-N bond reconstructionand those of carboxylic acids, presenting intriguing self-assembly scheme of metal ion andligands are discussed in detail. Meanwhile, the effects of reaction parameters on structure ofcomplexes are described. According to the contents, the thesis is divided into four chapters asfollows.Chapter 1 was elucidated mainly the background of this research, especially the aspects ofsynthesis and applications of coordination compounds. Stress of the section was placed on theintroduction to biomimic significance of Schiff base complexes and luminous functionality ofcarboxylic acid complexes. Finally, the consideration why we choose the field as topic of mythesis is presented.Chapter 2 reports the synthesis of five bivalent complexes, 1-5 of three diverse Schiff baseligands that are denoted as H2L1, H2L2 and HL3(see abbreviation). The metal complexes wereisolated as crystals by two methods, specifically, hydrothermal and ambient solution reactions.X-Ray single-crystal diffraction revealed that complexes, 1-3 and 5 are mononuclear and 4 ismultinuclear. Structures of these products indicate that the ligands are in-situ generated fromreconstruction of polyamines. In particular, the formation of H2L1 and HL3 show the C-N bondcleavage and H2L2 show the C-N bond formation. Comparing the synthesis conditions ofcomplexes 1-4 with that of 5, we believe that the reconstruction of polyamine is caused byheating.Chapter 3 describes the synthesis and structures of complexes with mixed ligands. Totally sixnovel coordination polymers, [Cu6(BDA)2(2-oxo-BDA)2(Bpy)2O2]n(6), [Cu(HBDA)2(bpy)]n(7),[Zn(BDA)(pz)2]n(8), {[Zn3(BTA)2(pz)6]·2H2O}n (9), [Cd(BDA)(pz)2]n(10), [Co(BDA)(pz)2]n(11)and a monomer[Mn(BDA)(pz)4](12), were included in the section, of which 6 and 7 arederived from bpy and H2BDA and 8-12 from pz and H2BDA (or H3BTA). Their crystalstructures were determined by single-crystal X-ray diffraction, revealed that all the complexes,except for 6 in 2-D sheet and 12 in 0-D monomer, are structured in 1D chains and they have the[M(pz)2] as second building blocks. Generation of 8-12 proves that the proportion of ligands andmetal salt affects the structures of the complexes. Chapter 4 as summarization of the results of experiments describes the important factorsinfluencing the construction of metal complexes, such as temperature, second ligand andproportion of ligands and metal salt.
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