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Transmetallation Of A Lithium Porphyrin With Iron(Ii), Kidus Debesai
Transmetallation Of A Lithium Porphyrin With Iron(Ii), Kidus Debesai
The Corinthian
Synthesis and characterization of the iron(III) derivative of the 2,3,7,8,12,13,17,18-octabromo-meso-tetrakis(N-methylpyridium-4-yl)porphyrin was accomplished via metal metathesis of the lithium porphyrin and iron(II) ion. Preliminary molecular orbital analysis of the iron(II) and iron(III) derivatives demonstrate that the iron(III) porphyrin exists at a lower energy state.
Progress Towards A Facile Synthesis Of A Gadolinium (Iii) Octabrominated Porphyrin, Tseng Xiong
Progress Towards A Facile Synthesis Of A Gadolinium (Iii) Octabrominated Porphyrin, Tseng Xiong
The Corinthian
Towards preparing porphyrin complexes that combine contrast agent and photodynamic therapy capabilities at tumor sites, the Gd(III) porphyrin derivative of the octabrominated meso-tetrakis(N-methyl-4-pyridyl)porphyrin, GdTMPyPBr8 5+ was synthesized by refluxing Gd(III) ion with H3TMPyPBr8 5+ at pH 7. The metallocomplex was characterized by UV-visible spectroscopy and showed a Soret band shift from 503 nm to 463 nm at pH 7, suggesting that metal insertion of Gd(III) into the core of porphyrin ligand had occurred. However, synthesis of the Gd(III) complex required high temperatures and long reaction times. To circumvent these harsh conditions, the lithium porphyrin derivative was first prepared and subsequently …