Mechanism of isomerization of Ni(cyclam) in aqueous solutions

Eric Maimon, Israel Zilbermann, Haim Cohen, Daniel Kost, Rudi Van Eldik, Dan Meyerstein

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Nickel complexes of cyclam and cyclam derivatives isomerize in aqueous solutions via two different mechanisms: i. deprotonation of one of the coordinated amino groups followed by inversion and ii. cleavage of the Ni-N bond followed by inversion. While the first mechanism is relevant for the di- and tri-valent nickel complexes, the second one occurs for the mono-valent complexes, and for complexes with tertiary amines as ligands.

Original languageEnglish
Pages (from-to)4997-5004
Number of pages8
JournalEuropean Journal of Inorganic Chemistry
Issue number24
StatePublished - 16 Dec 2005
Externally publishedYes


  • Cyclam
  • Isomerization
  • Nickel complexes
  • Oxidation states


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