Containing Cu (ii), Mn (ii), Zn (ii) And Co (ii) Ion With Polymer Synthesis And The Nature Of The Study

Five novel multi-nuclear bridging complexes have been designed and synthesized, namely, the hetero-transitional metallic two-dimensional polymer {[Cu(ipa)2]2Mn(NCS)6-2H2O}n (1) with thiocyanato anion as bridging ligand, the two-dimensional complex {Cu3[C6(COO)6](H2O)io}'2H2O (2) and one-dimensionaJ complex {[Co3(C6(COO)6)(H20)i2]-6H2O}n (3) with mellitic anion as bridging ligands, one-dimensional chain complex {[Mn(pyz)(SCN)(H2O)2]-H2O} ?(4) and one-dimensional chain complex {[Zn(pyz)(SCN)(H20)2]-H:0]n (5) with pyra/inc ?2-carboxylate as bridging ligands. The five complexes were characterized by elemental analysis and IR spectroscopy, and their crystal structures determined by X-ray crystallography. The variable-temperature magnetic susceptibility was performed and the magnetic data were analyzed for the complexes except complex (5). The study of fluorescent spectra of the complex (5) was made .The major characteristics and the contributions of this work are as following:1. Magnetic measurement exhibits intresting ferromagnetic coupling, which is the first report in the Cu(II)-Mn(II) systems.2. The first novel two-dimensional hetero-metallic polymer assembled by 32-membered CujMruCgNgSg square lattice as a subunit fabricated by SCN~ anions bridges, showing fascinating topological motif is synthesized.3. This is the first study of magnetic interactions associated with Mn(II) complexes with pyrazin-2-carboxylic anion as a bridging ligand, and the study of the fluorescent of complex (5) was performed .4. A novel two-dimensional complex {Cu33[C6(COO)6](H2O)io}-2H2O (2) and a novel one-dimensional complex {[Co3(C6(COO)6)(H20)i2]-6H2O},, (3) weae synthesized and magnetic properties of the two complexes were made.The study will benefit the designation and the syntheses of the novel molecular magnets , and it will also benefit the understanding of the biology function of meUil ions in metallic protein.