Dalton Transactions

Stability and structure of mono-and dinuclear Cu (II), Ni (II) and Zn (II) complexes of pyrazole and triazole bridged bis-macrocycles

M Raidt, M Neuburger, TA Kaden

Index: Raidt, Michael; Neuburger, Markus; Kaden, Thomas A. Dalton Transactions, 2003 , # 7 p. 1292 - 1298

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Citation Number: 16

Abstract

The two ligands L1 and L2, consisting of two 1, 4, 7-triazacyclononane rings bridged by a pyrazole or a triazole group, form with Cu2+, Ni2+ and Zn2+ a series of mononuclear [MLHn](n+ 2)+(n=− 3,− 2,− 1, 0, 1, 2) and dinuclear species [M2LHm](m+ 4)+(m= 0,− 1,− 2,− 3), the stabilities of which have been determined by potentiometric titrations. The triazole bridged ligand L1 forms complexes which are more stable than those of the pyrazole ...