Crystal Engineering of 2,3,5,6-Tetrafluoro-1,4- bis(4-pyridylsulfenyl)benzene:Structure, Spectroscopic, and Luminescence Studies

• Main Authors: Yi-Ling Tsai, 蔡易玲
• Other Authors: Biing-Chiau Tzeng
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/78198371235078958948

碩士 === 國立中正大學 === 化學所 === 93 === The strategy to construct supermolecules has been greatly improved as the self-assembly phenomena was discovered during last decades. The desired functionality in metalla-supramolecular squares may be introduced by employing functional ligands or properly functionalized metal corners with appropriate sizes and shapes. 4,4’-bipyridine is commonly used as a bridging ligand in generating a macrocyclic compound. Usually, tetranuclear compounds are formed when a rigid spacer such as 4,4’-bipyridine is used as a bridging ligand. Unlike the conventional synthetic strategy, a flexible ligand, 4-Py2S2BF4 (2,3,5,6-tetrafluoro-1,4-bis(4-pyridylsulfenyl)benzene), was chosen as a bridging ligand for the construction of macrocyclic molecules with Pd(Ⅱ), Pt(Ⅱ), or Re(Ⅰ) ion as metal corners, respectively. The X-ray diffraction analysis shows that [Pd(d-t-bpy)(4-Py2S2BF4)]2(OTf)4 (1) (d-t-bpy=4,4’-di-tert-butyl-2,2’-bipyridine) forms a supramolecular-looped compound, where the supramolecular loops were also stacked to form interesting one-dimensional channels in the solid state. Beside the supramolecular synthesis, we are also interested in the construction of interesting coordination polymers based on 4-Py2S2BF4. Here, the coordination polymer 7 was synthesized by using 4-Py2S2BF4 with ZnI2, characterized by the X-ray diffraction study. In addition, spectroscopic and photophysical properties of the compounds synthesized here were investigated.