Rowley, J. E., et al. “X-Ray Crystal Structure* and Kinetics of Oxidation of 1,4,8,11-Tetraazaundecanenickel(II), [Ni-II(2,3,2-Tet)](2+) by Peroxodisulphate: Formation of a Stable Non-Macrocyclic Nickel(III) Polyamine”. Transition Metal Chemistry, vol. 26, no. 1-2, 2001, pp. 164-9, https://scholar2.islandarchives.ca/islandora/object/ir%3Air-batch6-1327.

Genre

  • Journal Article
Contributors
Author: Rowley, J. E.
Author: Haines, Robert I.
Author: Bernard, B. R.
Date Issued
2001
Abstract

While macrocyclic ligands are well-known to stabilize tervalent nickel, it is very unusual to form stable nickel(III)-amine species in aqueous solution. We describe the kinetics of oxidation of 1,4,8,11-tetraazaundecanenickel(II), [Ni-II(2,3,2-tet)](2+) by peroxodisulphate in aqueous solution to the tervalent state. The reaction follows a second order rate law, first order in [Ni-II(2,3,2-tet)](2+) and first order in peroxodisulphate. The activation enthalpy and entropy are 55 +/- 3 kJ mol(-1) and -38 +/- 10 J K-1 mol(-1) respectively. The X-ray crystal structure of the [Ni-II(2,3,2-tet)](2+) cation is also described. The title compound crystallizes in the monoclinic space group P2(1)/n. The cation has a slightly distorted square planar structure, with the bite angle of the 5-membered chelate rings being slightly less than 90 degrees, and that of the 6-membered chelate ring being correspondingly greater than 90 degrees.

Note

Univ Prince Edward Isl, Dept Chem, Charlottetown, PE C1A 4P3, Canada.; Haines, RI, Univ Prince Edward Isl, Dept Chem, 550 Univ Ave, Charlottetown, PE C1A 4P3, Canada.

DORDRECHT; SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS

KLUWER ACADEMIC PUBL

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Source type: Electronic(1)

Language

  • English

Subjects

  • BINARY AQUEOUS MIXTURES
  • BEHAVIOR
  • MEDIA
  • MECHANISMS
  • COMPLEXES
  • IONS
  • Chemistry, Inorganic & Nuclear
  • PEROXYDISULFATE
  • ANION
Page range
164-169
Host Title
Transition Metal Chemistry
Host Abbreviated Title
Transit.Met.Chem.
Volume
26
Issue
1-2
ISSN
0340-4285

Department