Mechanism of isomerization of Ni(cyclam) in aqueous solutions

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

doi:10.1002/ejic.200500523

Mechanism of isomerization of Ni(cyclam) in aqueous solutions

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

Department of Chemical Sciences

Research output: Contribution to journal › Article › peer-review

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Abstract

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 language	English
Pages (from-to)	4997-5004
Number of pages	8
Journal	European Journal of Inorganic Chemistry
Issue number	24
DOIs	https://doi.org/10.1002/ejic.200500523
State	Published - 16 Dec 2005

Keywords

Cyclam
Isomerization
Nickel complexes
Oxidation states

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10.1002/ejic.200500523

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AU - Maimon, Eric

AU - Zilbermann, Israel

AU - Cohen, Haim

AU - Kost, Daniel

AU - Van Eldik, Rudi

AU - Meyerstein, Dan

PY - 2005/12/16

Y1 - 2005/12/16

N2 - 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.

AB - 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.

KW - Cyclam

KW - Isomerization

KW - Nickel complexes

KW - Oxidation states

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JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

IS - 24

ER -

Mechanism of isomerization of Ni(cyclam) in aqueous solutions

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Keywords

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