Synthesis And Structure Of Coordination Compounds Based On Cyanometalate And Schiff Base Building Blocks

The thesis includes two parts. In part 1, the assembly of three building blocks, K3[Fe(CN)6], K4[Mo(CN)8] and K4[Fe(CN)6] with transition metal and lanthanide ions, respectively, leads to the formation of seven compounds. Compound 1 is based on [Fe(CN)6]3-, compound 2 and compound 3 consists of [Mo(CN)8]4- and lanthanide ions (Ln=Ce, La). The reactions between [Fe(CN)6]4- and Ln(Ⅲ) ions, where Ln=Ce(4), La(4a), Nd(4b), Gd(4c), form a series of compounds. In part 2, compound 5 and compound 6 were obtained by the reaction of bivalent manganese ions with Schiff base (H3L) and 4,4'-bipyridine-N,N'-dioxide (bpdo).The formulae of nine compounds are as follows:(1)[CuⅡ(Hydeten)2]2[FeⅡ(CN)6]·2H2O(2)[CeⅢ2(ida)2(H2O)8][MoⅣ(CN)8]·H2O(3)[LaⅢ2(ida)2(H2O)8][MoⅣ(CN)8]·H2O(4)NaLnⅢ[FeⅡ(CN)6]·3H2O (Ln= Ce, La, Nd, Gd)(5)[MnⅣ(HL)2]·CH3CN (6)[MnⅡ(bpdo)6](ClO4)2All the compounds were characterized by IR and ICP, and the structures of 1, 2,4,5 and 6 were determined by X-ray single crystal diffractometry. The results indicate that the structure of compound 1 consists of trinuclear molecules formed by [Fe(CN)6]4- and [Cu(Hydeten)2]2+ building blocks, which crystallizes in the chiral space group P21. Compound 2 exhibits a two-dimensional layer-like structure extended by IDA ligands and lanthanide ions, while the counter anion, [Mo(CN)8]4- as template, is situated within the two-dimensional layers. The structure of compound 4 shows a 3D network. Na+ is located in the cavity of the network. Compound 5 consists of mononuclear manganese(Ⅳ) structure, which is linked by intermolecular hydrogen bonds to form supramolecular one-dimensional chain-like structure. Compound 6 is comprised of Mn(Ⅱ) and bpdo ligands, which is a mononuclear molecule. The two ClO4- ions act as counter anions to balance charge. The results of IR spectrum and ICP analysis suggest that compound 3 has a two-dimensional layer-like structure similar to compound 2.