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Thioether-oxime complexes of Nickel(II) and Copper(II)
Please use this identifier to cite or link to this item:
http://hdl.handle.net/1860/144
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| Title: | Thioether-oxime complexes of Nickel(II) and Copper(II) |
| Authors: | Prushan, Michael J. |
| Keywords: | Oximes
Ligands
Electrochemistry
Ni(III)
Thioether-oxime ligand |
| Issue Date: | 12-Jun-2003 |
| Abstract: | Nickel(II) and Copper(II) complexes of tetra-and pentadentate
thioether-oxime ligands have been synthesized. An extraordinary range of
properties are exhibited by the complexes. The tetradentate thioether-oxime
complexes of copper(II) form axial/equatorial dimeric complexes in the solid
state. These complexes exhibit weak ferromagnetic coupling between
adjacent copper(II) ions. ESR spectra reveal that the dimer is broken in
solution, and indeed the ESR spectra reveal tetragonal symmetry about the
copper(II) ions in the tetradentate thioether-oximes. The electrochemistry of these complexes supports the fact that oxime-containing ligands stabilize
copper(II). Nickel(II) forms a wide range of structures with the tetradentate ligands; the geometries vary from low-spin square planar to high-spin trinuclear complexes. The nickel(II) ions in trimeric complexes are disposed at the corners of an isosceles triangle and couple to each other through weak antiferromagnetic interactions. The electrochemistry of the trimeric nickel(II) complexes reveals that Ni(III) is attainable, due to the presence of anionic donors. Nickel(II) and Copper(II) form octahedral and square-pyramidal complexes with the pentadentate thioether-oxime ligands. The electrochemistry of the Ni(II) complexes reveals that most of the pentadentate ligands can stabilize both Ni(I) and Ni(III) |
| URI: | http://dspace.library.drexel.edu/handle/1860/144 |
| Appears in Collections: | Drexel Theses and Dissertations
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