The Crystal Structure of Nickel Chloride Hexahydrate, NiCl2·6H2O

The crystal structure of NiCl 2 ·6H 2 O has been determined by the X-ray single crystal method. The unit cell is monoclinic with a =10.23 Å, b =7.05 Å, c =6.57 Å and β=122°10'. The space group is C 2 h 3 – C 2/ m and the unit cell contains two formula units. The atomic arrangement is quite the same as that of CoCl 2 ·6H 2 O and thus the structure model adopted for this salt has again been confirmed to be correct, as compared with the model proposed by Stroganov et al. .