منابع مشابه
Metal Complexes of Dioxo-porphyrins-Zinc(II) Complexes of 2,3,7,8,12,13,17,18-Octaethyl-5,15-dioxo-porphyrin and 5,15-Dioxo-etioporphyrin I
The crystal structures of two zinc(II) 5,15-dioxo-porphyrins (porphodimethenes) have been determined to investigate the coordination chemistry of porphyrins with interrupted conjuga tion system. Both compounds have a five-coordinated zinc center with pyridine as axial ligand and show overall structural parameters very similar to porphyrins. The oxidized meso-posi tions are, however, easily id...
متن کاملA facile photosynthesis of trans-dioxoruthenium(VI) porphyrins.
Photolysis of porphyrin-ruthenium(IV) dichlorate complexes with visible light results in homolytic cleavage of the O-Cl bond in the chlorates to form trans-dioxoruthenium(VI) species bearing either sterically encumbered or unencumbered porphyrin ligands.
متن کاملFluorescence and FTIR Spectra Analysis of Trans-A2B2-Substituted Di- and Tetra-Phenyl Porphyrins
A series of asymmetrically substituted free-base di- and tetra-phenylporphyrins and the associated Zn-phenylporphyrins were synthesized and studied by X-ray diffraction, NMR, infrared, electronic absorption spectra, as well as fluorescence emission spectroscopy, along with theoretical simulations of the electronic and vibration structures. The synthesis selectively afforded trans-A₂B₂ porphyrin...
متن کاملIntracellular trafficking of porphyrins.
Hemes are porphyrins that play a critical role in diverse biological processes. Heme synthesis culminates in the mitochondrial matrix, but the eight-step biosynthetic pathway is spatially shared between the mitochondria and cytoplasm. A recent paper describes the nature of the transporter that translocates the heme precursor coproporphyrinogen III into the mitochondria for heme synthesis. The i...
متن کاملPorphyrins and Metalloporphyrins
This is another of an increasing number of human gross anatomy books being published in abbreviated form. Throughout the book each left-hand page contains quite accurate written descriptions of structures that are illustrated as line drawings on the opposite right-hand page. Even though the text is written in a telegraphic style and the drawings are small, the book still contains 443 pages. It ...
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 2007
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja0761737