Rational Design, Synthesis And Characterization For Novel Complexes Based On "Complex Ligand" Strategy

It is still a great challenge for coordination researchers to synthesize supramolecular complexes with specific structure and function through the way of controlling diversified supramoluclar interactions.In this contribution,we probed into the directional construction and ordered assembly for functional supramolecular complexes based on "complex as ligand" strategy,and investigated their thermal stabilities,and magnetic properties combining single crystal structural analysis.The following is the main research contents and conclusions.1.we described the syntheses and structures for a series of mixed-valence copper complexes based on Cu(2-pac)₂ as complex ligand,and further discussed how to carry out self-assembly through introducing appropriate counter anions and controlling reaction conditions.2.We successfully synthesized a series of Cu(â… )complex linked by rigid bridging ligands according to the similarity between complex ligand Cu(2-pac)₂ and pyrazine, 4,4'-bipyridine,4,4'-bi(ethylene)pyridine.3.Through 2-mpac reacting with the first row late transitioin metal,we prepared 5 complexes as complex ligands to further design and synthesize a ferromagnetic complex taking Cu(2-mpac)₂(H₂O)·3H₂O as complex ligand and two Cu-Cd and Cu-Er supramolecular complexes.4.We made the coordinated water molecules of complex ligands M(2-mpac)₂(H₂O)₂(M = Co,Ni)replaced by N-donor rigid bridging ligands, affording a series of sandwich,grid,porous supramolecular complexes based onÏ€-Ï€stacking and hydrogen bonding interactions.5.We designed and synthesized 3 mixed ligands complexes badsed on the differences of coordination ability between thiocyanate anion,azide anion and the organic ligand from complex ligand.