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Mechanism of Isomerization of Ni(cyclam) in Aqueous Solutions
Author(s) -
Maimon Eric,
Zilbermann Israel,
Cohen Haim,
Kost Daniel,
van Eldik Rudi,
Meyerstein Dan
Publication year - 2005
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200500523
Subject(s) - cyclam , chemistry , isomerization , deprotonation , nickel , aqueous solution , bond cleavage , medicinal chemistry , stereochemistry , photochemistry , organic chemistry , catalysis , metal , ion
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. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)