On Some Transition Metal Complexes Having Orientational Properties(II). Copper(II) complexes
β Scribed by Dr. S. Frunza; L. Frunza; D. N. Stoenescu; Dr. R. Moldovan; T. Beica
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 278 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0232-1300
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β¦ Synopsis
On Some Transition Metal Complexes Having Orientational Properties(I1). Copper (11) complexes
Alignment layers containing copper(I1) complexes with acrylic acid or polyvinylpyrrolidone show homeotropic orientational properties. This behaviour is supposed to be due to the particular structure of the complex copper(I1) ions. We give spectroscopic arguments to support the anchoring of liquid crystal (LC) molecules by coordination to the copper ion within the alignment layer.
Des couches contenant des complexes de cuivre(I1) aux ligands organiques comme I'acide acrylique et le polyvinylepyrrolidone montrent des proprittes d'orientation homeotrope. On peut supposer que ces proprietts sont likes a la structure particuliere du complexe de cuivre. Des arguments spectroscopiques soutiennent I'idte de I'encrage par coordination des molicules du cristal liquide a I'ion du cuivre apartenant a la couche d'orientation.
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The template reaction of (bis[(S)-2-(am1noniethyl)pyrrolidine]}copper(II) with formaldehyde, nitroethane, and base in MeOH yields optically pure { 1,7-bis[(S)-pyrrolidin-2-yl]-4-methyl-4-nitro-2,6-diazaheptane}copper(I1) ([Cu((S,S)-mnppm)12+) in high yield. The same reaction with ruc-2-(aminomethyl)
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