Gadolinium potassium hexacyanoferrate(II) trihydrate, GdKFe(CN)6.3H20, crystallizes in the orthorhombic space group Pnma (No. 62). The structure consists of non-linear cyanide bridges linking octahedrally coordinated Fe atoms and eight-coordinate Gd atoms. Cavities within the structure are occupied by potassium and zeolitic water molecules which are within hydrogen-bonding distance of the water molecules bonded to the Gd atoms, GdN6(H20)2.
ReferencesAbrahams, S. C., Lissalde, F. & Bernstein, J. L. (1978). J. Chem.Phys. 68, 1926-1935. © 1996 International Union of Crystallography Printed in Great Britain -all rights reserved
CommentThe first ferrocyanide containing a lanthanide atom, CeKFe(CN)6, was described by Robinson (1909).