Degree Name
Master of Science (MS)
Semester of Degree Completion
1993
Thesis Director
Mark E. McGuire
Abstract
A new alloxazine ligand (1; "Pptd"), produced by the condensation of 1,10-phenanthroline-5,6-dione with 5,6-diamino-1,3-dimethyluracil, and several transition metal complexes containing this ligand, have been synthesized. The Pptd ligands attach to Ru(II), Co(II), or Re(I) metal centers through the phenanthroline linkage to form stable polypyridyl complexes. The spectral and the electrochemical characterization of Pptd complexes of Ru(II), Co(II), and Re(I) is presented.
Pptd is capable of being reduced (across the pyrazine nitrogens) by two H-atoms. When coordinated to Ru(II), Pptd forms stable complexes which retain the robust characteristics and electrochemical activity of other Ru(II) polypyridyl species. In addition, Ru(II) complexes of Pptd show pH-dependent reductions in aqueous solution. Thus, in principle, Ru(II)-Pptd complexes could be used as "H-atom transfer" mediators, capable of shuttling up to six (or more) H-atoms to suitable substrates in aqueous solution.
Recommended Citation
Huang, Huakai, "Synthesis and Characterization of Transition Metal Polypyridyl Complexes with a Novel 1,10-Phenanthropteridinedione Ligand" (1993). Masters Theses. 2142.
https://thekeep.eiu.edu/theses/2142
