1999
DOI: 10.1007/pl00010209
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Protonation and Coordinative Properties of 14-Membered Tetraaza Macrocycles Linked to Phthalocyanines

Abstract: The protonation behaviour and coordination ability of 14-membered tetraaza macrocycles in the periphery of a phthalocyanine core (L) together with a model compound of identical macrocyclic structure towards Co 2 , Ni 2 , and Cu 2 has been studied potentiometrically at 25 C in 0.3 M KCl solution. The protonation pattern of L indicates that the basicities of three secondary amino groups are high and comparable; the fourth one is of rather low basicity, probably due to the effect of charge repulsion. It is shown … Show more

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