[Yb(H₂O)₈][Cd₃Cl₉(H₂O)]·6H₂O

Abstract

The title compound, namely octaaquaytterbium(III) aquanonachlorotricadmate(II) hexahydrate, [Yb(H 2 O) 8 ][Cd 3 Cl 9 (H 2 O)]·6H 2 O, was prepared by evaporation at 278 K from an aqueous solution of the ternary system YbCl 3 –CdCl 2 –H 2 O and was characterized by elemental chemical analysis and by X-ray powder and single-crystal diffraction studies. The crystal structure can be viewed as being built from layers of double chains of CdCl 6 and CdCl 5 (H 2 O) octahedra separated by antiprismatic [Yb(H 2 O) 8 ] 3+ cations. The stabilization of the structure is ensured by O—H...O and O—H...Cl hydrogen bonds. A comparison with the structures of SrCd 2 Cl 6 ·8H 2 O and CeCd 4 Cl 11 ·13H 2 O is presented.