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 Co((OH)₂Co(NH₃)₄)₃(SO₄)₃ was prepared starting from cobalt sulfate. General Name, Symbol, Number cobalt, Co, 27 Chemical series transition metals Group, Period, Block 9, 4, d Appearance metallic with gray tinge Atomic mass 58. ... Alfred Werner (December 12, 1866 - November 15, 1919) was a German Nobel prize-winning chemist. ... Chirality refers to several phenomena, all having to do with objects that differ from their mirror image. ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ...

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. 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. Image File history File links Hexol1. ... Resolving power is the ability of a microscope or telescope to measure the angular separation of images that are close together. ... R-phrases 11-20/21/22-36/37/38 S-phrases 16-26-36 RTECS number EX1260000 (R) EX1250000 (S) Supplementary data page Structure and properties n, εr, etc. ... Fremys salt discovered in 1845 by Edmond Fremy (1814 - 1894) is a chemical compound and a strong oxidizing agent. ...

In 2004 the second hexol was reinvestigated and found to be a hexameric species. Image File history File links Hexol3. ...

Image File history File links Hexol2b. ...

External links

• Hexol Molecule of the Month September 1997 Website
• National Pollutant Inventory - Cobalt fact sheet

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