| Summary: | 碩士 === 中原大學 === 化學研究所 === 91 === ABSTRACT
This thesis discusses the supramolecular chemistry of silver (Ⅰ) complexes containing polydentate nitrogeneous ligands. A series of silver (Ⅰ) complexes of the types {[Ag2(H2DpyO)2(pyOa)](BF4)} □, 1 , {[Ag2(H2DpyO)2(pyOa)](ClO4)} □, 2 , {[Ag2(H2DpyO)2(pyOa)](PF6)} □, 3 and {[Ag2(H2DpyO)2(pyOa)(NO3)]} □, 4 , have been prepared by reaction of AgX ( X = BF4-, ClO4-, PF6-, NO3-) with H2DpyO ( H2DpyO = N,N''-di(2-pyridyl)oxamide ) in EtOH / H2O , where pyOa is anion of N-pyridin-2-yl-oxalamic acid .
The H2DpyO ligand in 1~4 are coordinated to the silver (Ⅰ) centers through two terminal pyridine nitrogen atoms, while the pyOa ligands are coordinated to silver (Ⅰ) centers through two oxygen atoms and the pyridine nitrogen atoms , forming ladder -type structures .
The anions , BF4- , ClO4- and PF6- are not coordinated to the silver (Ⅰ) atoms in complexes 1~3. The ladders are interlinked to each other through a series of Ag…O , Ag…F interactions and Cpy-H…F-B , Cpy-H…O-Cl , Cpy-H…F-P hydrogen bondings , while the molecules are interlinked to each other through Cpy-H…O-N hydrogen bondings in complex 4.
|
|---|
