Does a reinforced kinetic macrocyclic effect exist? The demetallation in strong acid of copper (II) complexes with open and cyclic tetramines containing a piperazine …

M Boiocchi, M Bonizzoni, L Fabbrizzi…

Index: Boiocchi, Massimo; Bonizzoni, Marco; Fabbrizzi, Luigi; Foti, Francesco; Licchelli, Maurizio; Poggi, Antonio; Taglietti, Angelo; Zema, Michele Chemistry - A European Journal, 2004 , vol. 10, # 13 p. 3209 - 3216

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Citation Number: 17

Abstract

Abstract The demetallation in acidic solution of the Cu II complexes with open-chain and cyclic tetramines containing a piperazine unit (2 and 3) has been investigated in terms of its kinetic aspects and compared with the behaviour of unsubstituted counterparts (tetramines 1 and 4). The presence of the piperazine fragment slows demetallation of the open-chain- ligand complex owing to the activation barrier associated with the conformational change ...