Table of Crystallization Water in Some Inorganic Halides
In the table below are indicated the number of molecules of water per metal in various salts.
| Formula of hydrated metal halides |
Coordination sphere of the metal |
equivalents of water of crystallization that are not bound to M |
Remarks |
|---|---|---|---|
| VCl3(H2O)6 | trans-+ | two | |
| VBr3(H2O)6 | trans-+ | two | bromides and chlorides are usually similar |
| VI3(H2O)6 | 3+ | none | iodide competes poorly with water |
| CrCl3(H2O)6 | trans-+ | two | dark green isomer |
| CrCl3(H2O)6 | 2+ | one | blue-green isomer |
| CrCl2(H2O)4 | trans- | none | molecular |
| CrCl3(H2O)6 | 3+ | none | violet isomer |
| MnCl2(H2O)6 | trans- | two | |
| MnCl2(H2O)4 | cis- | none | note cis molecular |
| MnBr2(H2O)4 | cis- | none | note cis molecular |
| MnCl2(H2O)2 | trans- | none | polymeric with bridging chloride |
| MnBr2(H2O)2 | trans- | none | polymeric with bridging bromide |
| FeCl2(H2O)6 | trans- | two | |
| FeCl2(H2O)4 | trans- | none | molecular |
| FeBr2(H2O)4 | trans- | none | molecular |
| FeCl2(H2O)2 | trans- | none | polymeric with bridging chloride |
| CoCl2(H2O)6 | trans- | two | |
| CoBr2(H2O)6 | trans- | two | |
| CoBr2(H2O)4 | trans- | none | molecular |
| CoCl2(H2O)4 | cis- | none | note: cis molecular |
| CoCl2(H2O)2 | trans- | none | polymeric with bridging chloride |
| CoBr2(H2O)2 | trans- | none | polymeric with bridging bromide |
| NiCl2(H2O)6 | trans- | two | |
| NiCl2(H2O)4 | cis- | none | note: cis molecular |
| NiBr2(H2O)6 | trans- | two | |
| NiCl2(H2O)2 | trans- | none | polymeric with bridging chloride |
| CuCl2(H2O)2 | 2 | none | tetragonally distorted two long Cu-Cl distances |
| CuBr2(H2O)4 | n | two | tetragonally distorted two long Cu-Br distances |
Read more about this topic: Water Of Crystallization
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