[New determination of the structure iron (II) chloride tetrahydrate]

Abstract

The crystal structure of iron(II) chloride tetrahydrate has been redetermined with three-dimensional X-ray data from a Picker four-circle automatic diffractometer. The space group is /b P/2/sub 1///b c / with unit-cell parameters /b a/=5.885, /b b/=7.174, /b c/=8.505 A and beta =111.11 degrees . Bond distances within a group FeCl/sub 2/.4H/sub 2/O are Fe-Cl 2.53 and Fe-O 2.12 and 2.08 A.Francai