| With the development of coordination chemistry and material science, the design and research of molecule-based magnets has been one of the most attractive fields in recent years. Cyano-bridged compounds play a very important role in the field due to its particular magnetic properties and properties of photochemistry and photophsics.As a new direction in the development of supramolecular chemistry, coordination polymers can be called high molecular weight molecules in inorganic chemistry. These compounds are also named metal-organic coordination networks or metal-organic frameworks (MOF), which are infinite systems build up with metal ions and organic ligands as main elementary units linked via coordination bonds and other weak chemical bonds. Coordination polymers have much special properties and architecture because of long-range ordering in the array of metal ions and organic ligands.In this dissertation, the research on the above fields was carried out.Firstly, a series of cyano-bridged heterometallic complexes were constructed, and their relationship between structures and magnetic properties were discussed by using [Cu(tren)CN]+ and [FeTp(CN)3]- as building blocks. The mechanism of arrangement of the cyanide ion was also investigated.Using [Cu(tren)CN]+ as a building block, one pentanuclear compound, [{Cu(tren)(NC)}4Ni](ClO4)6 and two trinuclear complexes, cis-[{(tren)CuNC}2 Co(tren)](ClO4)5·2H2O, [{(tren)CuCN}2NiL](ClO4)4 were prepared and characterized by single crystal X-ray analysis. The correlations between the structures and magnetic properties were discussed. The mechanism of arrangement of the cyanide ion involving Cu2+, Ni2+ and Co3+ ions was also investigated.Using [FeTp(CN)3]- as a building block, six trinuclear complexes [MII(DMSO)4][(Tp)Fe(CN)3]2 (MII = Co, Ni, Mn Cu) [Mn(phen)2] [(Tp)Fe(CN)3]2·5H2O, [NiL][(Tp)Fe(CN)3]2 and pentanuclear chain compound, [Ni3(dpa)4][(Tp)Fe(CN)3]2 have been prepared. The relationship between structures and magnetic properties have been fully discussed and found that the larger the Ni-N≡C and Cu-N≡C bond angles the stronger are the FeIII-NiII/CuII ferromagnetic interactions; the larger the Co-N≡C and Mn-N≡C bond angles the stronger are the FeIII-CoII/MnII antiferromagnetic coupling. Interestingly, FeIII-MnII magnetic coupling inversion (antiferromagnetic→ferromagnetic) takes place with the decrease of the Mn-N≡C bond angle.Secondly, a series of transition metal functional coordination polymers were hydrothermally synthesized based on the imidazole-4,5-dicarboxylic acid. Their structures, chirality transfer, photoluminescent, adsorption, and magnetic properties were studied.Six 2D sheets coordination polymers containing chiral helical chains, [M(HIDC)(H2O)(prz)0.5]n (M = Fe, Mn, Cd, Co), [Mn(HIDC)(H2O)]n and [Co(HIDC)(H2O)(pyz)0.5]n, have been synthesized. Their structures, chirality transfer, photoluminescent, and magnetic properties have been investigated.Three novel 3D coordination polymers with 1D Channels, [{Zn6(IDC)4(OH)2(H-prz)2}·13H2O]n, [{KMn4(IDC)3(prz)}·3H2O]n, and [{NaCd4 (IDC)3(prz)}·3H2O]n, were hydrothermally synthesized, and characterized by single-crystal X-ray diffraction. Their structures, adsorption, photoluminescent, and magnetic properties have been investigated.
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