Editing Cobalt(II) chloride (section)

===Anhydrous===
At room temperature, anhydrous cobalt chloride has the [[cadmium chloride]] structure ({{chem|CdCl|2}}) (R{{overline|3}}m) in which the cobalt(II) ions are octahedrally coordinated. At about 706&nbsp;°C (20 degrees below the melting point), the [[Coordination complex|coordination]] is believed to change to tetrahedral.<ref name=wojak/> The vapor pressure has been reported as 7.6&nbsp;[[millimeter of mercury|mmHg]] at the melting point.<ref name=saeki>Yuzo Saeki, Ryoko Matsuzaki, Naomi Aoyama (1977): "The vapor pressure of cobalt dichloride". ''Journal of the Less Common Metals'', volume 55, issue 2, pages 289-291. {{doi|10.1016/0022-5088(77)90204-1}}</ref>