Racemization solid iron complexes

Iron, tris(hexafluoroacetylacetone)-structure, 1,65 Iron, tris(oxalato)-chemical actinometer, 1,409 photoreduction, 1,471 relief-image-forming systems, 6,125 Iron, tris(l,10-phenanthroline)-absorptiometry, 1,549 racemization, 1,466 solid state, 1,467 structure, 1, 64 lron(III) chloride amino acid formation prebiotic systems, 6,871 Iron complexes acetonitrile. 4,1210 acetylacetone, 2,371 amidines... 

The structure of the simple hydroxamate complex tris(benzohy-droxamato) iron (III) (R = , R = H in Figure 1) has shown the most stable crystalline form of the solid to be the racemic cis isomer (11). (The convention for symbols of absolute configurations A and A are those of the IUPAC Proposal (12). The cis isomer is defined as the isomer... 

In a study of racemisation of tris(bipy) and tris(phen) complexes of iron(II) and nickel(II) in the solid state, further evidence was obtained to support the assignment of an associative-type mechanism, with a transition state or intermediate of coordination number 7, for racemization at nickel(II), but of racem-ization via a trigonal prism intermediate for the iron(II) complexesA useful freeze-drying technique has been described for the isolation of optically active solids in preparations of halides of cations of this type/ Different kinetic patterns, and therefore the likelihood of different mechanisms, have been established for the racemization of [Fe(phen)3] and [Ni(phen)3] in water containing small amounts of nitrobenzene. The extent of association between the cations and the nitrobenzene was estimated from determination of the solubilities of nitrobenzene in aqueous solutions of [M(phen)3]Br2. Complementary determinations of the solubilities of [M(phen)3]Br2 in aqueous nitrobenzene might have permitted an initial-state-transition-state dissection to have been carried out. 

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