Computed Properties of C3F9FeO9S3. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Iron(III) trifluoromethanesulfonate, is researched, Molecular C3F9FeO9S3, CAS is 63295-48-7, about Unlike solvation sphere exchange rates of nuclei belonging to the same molecule in the system iron(3+)/DMF. Author is Kaltenmeier, D.; Hertz, H. G..
Proton and 13C NMR relaxation rates 1/T1 and 1/T2 and chem. shifts Δω of paramagnetic solutions of Fe(ClO4)3 in DMF, Fe(SO3CF3)3 in DMF, and FeCl3 in DMF were measured at 220-400 K. Solvation sphere exchange rates were calculated for all 3 constituents of the DMF mols., CHO, CH3,a and CH3,b. The exchange rate of the CHO nuclei is greater by a factor ∼2 than that of the CH3 nuclei; the exchange rates for the Me groups a and b are identical within exptl. uncertainty. The results were established through a detailed anal. and discussion of the temperature dependence of the 1/T1, 1/T2 and Δω data. The non-exchange part of the observed nuclear magnetic relaxation rates is explained within the existing framework of theor. relaxation equations, containing dipole-dipole and scalar interaction terms. This anal. indicated that delocalization of the unpaired electron spin from the Fe3+ ion to DMF mols. beyond the 1st solvation shell occurs, giving rise to a scalar relaxation contribution in the 2nd solvation sphere. In the case of FeCl3/DMF solutions in the presence of various complex species, Fe(DMF)63+, Fe(DMF)5Cl2+…FeCl4-, a new procedure for extracting residence times from the “”fast exchange”” is presented. Interferences with complex equilibrium caused apparent residence time ratios τM(methyl)/τM(formyl) >2.
Different reactions of this compound(Iron(III) trifluoromethanesulfonate)Computed Properties of C3F9FeO9S3 require different conditions, so the reaction conditions are very important.
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