One- and Two-Electron Reduced 1,2-Diketone Ligands in [ZnII(L•)2(Et2O)], [CoII(L•)2(Et2O)], and Na2(Et2O)4[CoII(LRed)2]

One- and Two-Electron Reduced 1,2-Diketone Ligands in [ZnII(L•)2(Et2O)], [CoII(L•)2(Et2O)], and Na2(Et2O)4[CoII(LRed)2]

The reaction of 1,2-diketone bis(2,6-diisopropylphenyl)glyoxal (LOx) with ZnCl2 or CoCl2 (ratio 2:1) in dry diethyl ether with 2 equiv of sodium (per transition-metal ion) afforded the neutral complexes [ZnII(L•)2(Et2O)] (1) and [CoII(L•)2(Et2O)] (2), which were characterized by X-ray crystallograph...

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Veröffentlicht in:Inorganic chemistry 2008-12, Vol.47 (24), p.11745-11754
Hauptverfasser: Spikes, Geoffrey H, Milsmann, Carsten, Bill, Eckhard, Weyhermüller, Thomas, Wieghardt, Karl
Format: Artikel
Sprache:eng
Schlagworte:
Chlorides - chemistry
Cobalt - chemistry
Crystallography, X-Ray - methods
Glyoxal - analogs & derivatives
Glyoxal - chemistry
Imines - chemistry
Ketones - chemistry
Ligands
Models, Molecular
Molecular Conformation
Molecular Structure
Photometry - methods
Spectrophotometry - methods
Zinc Compounds - chemistry
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Zusammenfassung:The reaction of 1,2-diketone bis(2,6-diisopropylphenyl)glyoxal (LOx) with ZnCl2 or CoCl2 (ratio 2:1) in dry diethyl ether with 2 equiv of sodium (per transition-metal ion) afforded the neutral complexes [ZnII(L•)2(Et2O)] (1) and [CoII(L•)2(Et2O)] (2), which were characterized by X-ray crystallography, magnetochemistry, IR, electron paramagnetic resonance, and UV−vis spectroscopy. When 4 equiv of sodium were added, complex Na2(Et2O)4[CoII(LRed)2] (4) was isolated, which included some crystals of a minor (
ISSN:0020-1669
1520-510X
DOI:10.1021/ic801470p