P-Irone

The polymorphism of certain metals, iron the most important, was after centuries of study perceived to be the key to the hardening of steel. In the process of studying iron polymorphism, several decades were devoted to a red herring, as it proved this was the P-iron controversy. P-iron was for a long time regarded as a phase distinct from at-iron (Smith 1965) but eventually found to be merely the ferromagnetic form of ot-iron thus the supposed transition from P to a-iron was simply the Curie temperature, p-iron has disappeared from the iron-carbon phase diagram and all transformations are between a and y. 

Krumholz, P. Iron(II) Diimine and Related Complexes. Vol. 9, pp. 139—174. Lehn, J.-M. Design of Organic Complexing Agents. Strategies towards Properties. Vol. 16, pp. 1-69. 

Fig. 11-14. (a) Corrosion rate of metallic iron in nitric acid solution as a function of concentration of nitric add and (b) schematic polarization curves for mixed electrode reaction of a corroding iron in nitric add W p, = iron corrosion rate CHNO3 = concentration of nitric add t" (t ) = current of anodic iron dissolution (cathodic nitric add reduction) dashed curve 1= cathodic current of reduction of nitric add in dilute solution dashed ciuve 2 s cathodic current of reduction of nitric add in concentrated solution. [From Tomashov, 1966 for (a).]... 

Raag, R., Swanson, B. A., Poulos, T.L., and Ortiz de Montellano, P. R. (1990) Formation, crystal structure and rearrangement of a cytochrome P- iron-phenyl complex. Biochemistry 29, 8119-8126. 

Fig. 7.15 Metal coordination-based suprastructures from combination of m- and p-iron-based building blocks and a second class of metal salts.

Lefevre M, Proietti E, Jaouen F, Dodelet J-P. Iron-based catalysts with improved oxygen reduction activity in polymer electrolyte fuel cells. Science. 2009 324 71-4. 

In order to determine the relationship between the absorbance at 562 nm and the iron content of the iron(II)-ferrozine complex a standard curve is prepared by taking 0.2 ml aliquots of the standard iron solutions, 0-125 mg/1, containing amounts ranging from 0-25 p.% iron(II). 

TABLE 17. Effect of Processing on the Tocopherol, Phosphorous (P), Iron (Fe), and FFA content of Corn Germ Oil. ... 

Eckstein RP, Symons P. Iron tablets cause histopathologi-cally distinctive lesions in mucosal biopsies of the stomach and esophagus. Pathology 1996 28(2) 142-5. 

Khatib MA, Rahim O, Kania R, Molloy P. Iron deficiency anemia induced by long-term ingestion of omeprazole. Dig Dis Sci 2002 47(ll) 2596-7. 

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