| Description |
This thesis investigates new platinum(II) complex cocrystals with highly fluorinated cyanoaromatics. While π stacking compounds of polycyclic aromatic hydrocarbons and cyanoaromatics have been reported, interactions with transition metal complexes have yet to be explored. Crystal structures for (ppy)Pt(acac) with tetrafluoroterephthalonitrile, and pentacyanotrifluormethylbenzene were obtained and analyzed. With the crystallization of these complexes, the electronic structure of the resulting compounds was explored to better understand the inversion of electron density in cyanoaromatics. The crystallization of the yellow platinum complex and colorless cyanoaromatics afforded a color change ranging from light yellow to a darker red. The color change was a characteristic sign of the two compounds interacting and was observed in the formation of all the tested cocrystals. This observation was followed by analysis of the infrared spectrum of these cocrystals, which showed that in general the C-N stretch of each crystal differed when compared to its constituents. This shift was found among all the complexes formed and became a marker for the formation of the co-complexes. Finally, X-Ray crystallography revealed that the compounds crystallized in a stacked arrangement which usually had the aromatic ring centered above the platinum atom. The arrangement found from the X-Ray crystallography helped to explain how the electrostatic structure of the cyanocarbons complexes with the platinum(II) complexes dz 2 orbitals. |
