Abstract
The influence of NO2, Br, and COOH function substituents in various positions of Cu(II)Pc on the reactivity of the latter concerning the dissociation of the metal - nitrogen bonds in proton donor solvents is discussed.
Highlights
The correlation between structure and reactivity of metallophthalocyanines has not been investigated systematically until now. It is well known [1] that electro-optical, thermodynamic and acid-base properties, as well as reactivity are expressed as functions of the electronic effects arising from metal coordination with phthalocyanines or structural changes in the phthalocyanine macrocycle
Non-ionized H2SO4 molecules and H3O+ cations may be active particles when copper(II)phthalocyanines dissociate because the process demands protonation of donor N-atoms
The dissociation reaction of carboxy derivatives of copper(II)phthalocyanine is more complex because the dependence of the order of Reaction 1 on &+2+ changes for different carboxy derivatives and temperature conditions (Table 5)
Summary
The correlation between structure and reactivity of metallophthalocyanines has not been investigated systematically until now. The kinetics of dissociation of copper(II)phthalocyanines in hot concentrated sulfuric acid into the solvated metal cation and protonated macrocycle (destroyed under the experimental conditions) was studied (Equations 1, 2).
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