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| ⚫ | == References == | ||
| ⚫ | * A. Werner, H. Kuh, P. Wust Ber. '''1914''', 47, 196 | ||
| ⚫ | * ''The rediscovery of Alfred Werner's second hexol'' W. Gregory Jackson, Josephine A. McKeon, Margareta Zehnder, Markus Neuberger and Silvio Fallab ], '''2004''', (20), 2322 - 2323 | ||
| == External links == | == External links == | ||
| * Hexol Molecule of the Month September 1997 | * Hexol Molecule of the Month September 1997 | ||
| * | * | ||
| ⚫ | == References == | ||
| ⚫ | * A. Werner, H. Kuh, P. Wust Ber. '''1914''', 47, 196 | ||
| ⚫ | * ''The rediscovery of Alfred Werner's second hexol'' W. Gregory Jackson, Josephine A. McKeon, Margareta Zehnder, Markus Neuberger and Silvio Fallab ], '''2004''', (20), 2322 - 2323 | ||
| ] | ] | ||
Revision as of 15:35, 17 August 2011
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| Identifiers | |
|---|---|
| Properties | |
| Chemical formula | Co4H42N12O18S3 |
| Molar mass | 830.31 g·mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
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Infobox references
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Hexol is a cobalt compound that was first prepared by Alfred Werner in 1914 and represented the first non-carbon-containing chiral compound. The salt with the molecular formula of (SO4)3 was prepared starting from cobalt(II) sulfate.
Optical resolution of this compound was possible by treating the hexol chloride salt with the resolving agent silver D-(+)-bromocamphorsulphonate in dilute acetic acid. The D-hexol salt precipitated out from solution and the filtrate contained the L-hexol species. (D-hexol and L-hexol are enantiomers of each other; see here for D/L notation.) Werner also published a second achiral hexol (a minor byproduct from the production of Fremy's salt) that he incorrectly identified as a linear trimer.
In 2004 the second hexol was reinvestigated and found to be a hexanuclear species.
References
- A. Werner, H. Kuh, P. Wust Ber. 1914, 47, 196
- The rediscovery of Alfred Werner's second hexol W. Gregory Jackson, Josephine A. McKeon, Margareta Zehnder, Markus Neuberger and Silvio Fallab Chemical Communications, 2004, (20), 2322 - 2323 Abstract
External links
- Hexol Molecule of the Month September 1997 Website
- National Pollutant Inventory - Cobalt fact sheet