The Molar Light Absorption of Pyridine Ferroprotoporphrin (Pyridine Haemochromogen).
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چکیده
منابع مشابه
The formation of pyridine haemochromogen.
1. Titration of haem with pyridine in alkaline media of low ionic strength yields a true pyridine haemochromogen, compound III, at very low concentrations of pyridine. 2. Graphical analysis of this titration gives the first spectrophotometric evidence for a dimeric haem. 3. Compound III is unstable and tends to aggregate to a second compound, compound II, whose formation is enhanced under those...
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The cathodic polarographic wave observed for solutions of AlCl, in pyridine is due not to reduction of Al(III), but to reduction of the solvent, in which process Al(II1) plays an essential role, apparently by polarizing the pyridine through the formation of a Lewis acid-base adduct with the pyridine nitrogen. Macroscale electrolysis of pyridine solutions of AlCl, at a mercury cathode results in...
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Cyclic voltammogram and differential pulse polarograph of octaethyl porphyrin iron(III) chloride in dichloromethane was investigated in the presence of pyridine, imidazole and collidine. Values of E1/2 for FeIII/FeII redox reaction were monitored as a function of axial group concentration, and on the basis of these data, an overall oxidation-reduction and ligand addition scheme was formulated. ...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1953
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.07-1284