Transfer nitration characterization

Our failed — at least insofar as precise transition state characterization is concerned — attempt was nonetheless instructive i) contrary to what found in ref 30, the surface version of reaction (1) does show a barrier, although small, thus Supporting the view that both desolvation of the Cl ion and weak hydrogen bonding to the nitrate group contribute to the barrier ii) reaction (1) appears to be faster than (1), if it is verified that the proton has transferred away from the adsorption site. Concerning the latter point, as noted in Sec.II., there is experimental support for the view that such a transport does not occur. On the other hand, there is other experimental support for the view that it does, so that it seems fair to say that the situation remains ambiguous from an experimental viewpoint. 

Fritzsche also used charge transfer complexes with picric add to characterize the photodimer of anthracene [72] and he also observed colored complexes between aromatic hydrocarbons and anthraquinones and nitroanthraquinones. He had obtained these substances, without recognizing their nature, in an attempt to nitrate anthracene. Ten years after Fritzsche s publications, Berthelot carried out detailed investigations on numerous picrates of aromatic hydrocarbons and delineated applications of these complexes for the identification and separation of aromatic hydrocarbons [73,74]. 

Nwal Amang, D., Alexandrova, S., and Schaetzel, P., Mass transfer characterization of Dorman dialysis in a bi-ionic chloride nitrate system, Chem. Eng. J., 99, 69-76, 2004. 

Pore-water data from dredged material from Hamburg Harbour indicate typical differences in the kinetics of proton release from organic and sulphidic sources (Table 10.2). Recent deposits are characterized by low concentrations of nitrate, cadmium and zinc. When these low-buffered sediments are oxidized during a time period of a few months to years, the concentrations of ammonia and iron in the pore water typically decrease, whereas those of cadmium and zinc increase (with the result that these metals are easily transferred into agricultural crops ). 

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