Editing Copper(II) chloride (section)

==Structure==
Anhydrous copper(II) chloride adopts a distorted [[cadmium iodide]] structure. In this structure, the [[copper]] centers are [[octahedral molecular geometry|octahedral]]. Most copper(II) compounds exhibit distortions from idealized [[Octahedral molecular geometry|octahedral geometry]] due to the [[Jahn-Teller effect]], which in this case describes the localization of one [[electron|d-electron]] into a [[molecular orbital]] that is strongly [[antibonding molecular orbital|antibonding]] with respect to a pair of chloride ligands. In {{chem2|CuCl2*2H2O}}, the copper again adopts a highly distorted octahedral geometry, the Cu(II) centers being surrounded by two water ligands and four chloride ligands, which [[bridging ligand|bridge]] asymmetrically to other Cu centers.<ref>{{Cite book |last=Wells |first=A.F. |title=Structural Inorganic Chemistry |publisher=Clarendon Press |year=1984 |isbn=0-19-855370-6 |location=Oxford |page=253}}</ref><ref name="greenwood" />

Copper(II) chloride is [[Paramagnetism|paramagnetic]]. Of historical interest, {{chem2|CuCl2*2H2O}} was used in the first [[electron paramagnetic resonance]] measurements by [[Yevgeny Zavoisky]] in 1944.<ref>{{cite book|url=https://books.google.com/books?id=FldqbSffUMgC&pg=PA167|page=167|title=Mechanochemistry in Nanoscience and Minerals Engineering|author=Peter Baláž|publisher=Springer|year=2008|isbn=978-3-540-74854-0}}</ref><ref>{{cite book|url=https://books.google.com/books?id=l3F9yUSk-rgC&pg=PA3|page=3|title=Electron paramagnetic resonance: a practitioner's toolkit|author=Carlo Corvaja|publisher=John Wiley and Sons|year=2009|isbn=978-0-470-25882-8}}</ref>
{{multiple image
 | align = center
 | width = 200
 | footer = Structures of the forms of copper(II) chloride 
 | image1 = Tolbachite-3D-balls.png
 | alt1 = 
 | caption1 = Anhydrous<br>{{legend|rgb(256, 128, 80)|[[Copper]], Cu}}{{legend|red|[[Oxygen]], O}}{{legend|lime|[[Chlorine]], Cl}}{{legend|white|[[Hydrogen]], H}}
 | image2 = Copper(II)-chloride-dihydrate-xtal-3D-balls.png
 | alt2 = 
 | caption2 = Dihydrate}}