Solution studies of some new oxamides - Co-ordination behaviour towards Cu(II) ions
2007 | journal article. A publication with affiliation to the University of Göttingen.
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Solution studies of some new oxamides - Co-ordination behaviour towards Cu(II) ions
Dobosz, A.; Spychala, J.; Kozlowski, H.; Rowinska, M.; Temeriusz, A.; Frauendorf, H. & Meyer, F. (2007)
Journal of Inorganic Biochemistry, 101(10) pp. 1505-1516. DOI: https://doi.org/10.1016/j.jinorgbio.2007.06.023
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Details
- Authors
- Dobosz, Agnieszka; Spychala, Jan; Kozlowski, Henryk; Rowinska, Magdalena; Temeriusz, Andrzej; Frauendorf, Holm; Meyer, Franc
- Abstract
- The co-ordination chemistry of some new oxamides towards Cu(II) ions was studied using various techniques: potentiometry, voltammetry, spectroscopy (UV-Vis, CD and EPR) and ESI-MS spectrometry. All tested compounds chelate the copper(II) ions with formation of 1: 1 and 1:2 (metal-to-ligand ratio) complexes. The Cu(II) ions are bound by IN, 2N or 3N nitrogen donor systems. Additionally, an unusual co-ordination to amide N-atoms without additional anchoring site is suggested. The N-14 hyperfine splitting observed for the system ox6-Cu(II) above pH 10 clearly indicates the involvement of at least three N donor atoms in the copper ion binding. Moreover, the surrounding by three amide-N and one carbonyl-O stabilizes the high oxidation state of copper(III), although such complexes are very unstable in solution. (C) 2007 Elsevier Inc. All rights reserved.
- Issue Date
- 2007
- Status
- published
- Publisher
- Elsevier Science Inc
- Journal
- Journal of Inorganic Biochemistry
- ISSN
- 0162-0134