Cadmium copper tetrachloride tetrahydrate.

Authors :: Kortz, Ulrich
Dickman, Michael H.
Source :: Acta Crystallographica: Section C (Wiley-Blackwell); Mar2000, Vol. 56 Issue 3, p265-266, 2p
Publication Year :: 2000
Abstract: The double salt [CuCl<subscript>2</subscript>(H<subscript>2</subscript>O)<subscript>2</subscript>{CdCl<subscript>2</subscript>}]·2H<subscript>2</subscript>O crystallizes in the triclinic rather than the monoclinic system as reported previously. The structure consists of sheets in the ac plane with slightly distorted octahedral CdCl<subscript>6</subscript> [Cd-Cl 2.5813 (8)-2.6943 (8) Å] connected by Cd-Cl-Cd bridges in the Cd equatorial plane along a, and by Cd-Cl-Cu bridges to layers of square-planar CuCl<subscript>2</subscript>(H<subscript>2</subscript>O)<subscript>2</subscript> along c. There are long axial Cu-Cl interactions of 2.8623 (7) Å and additional water of hydration is hydrogen bonded to coordinated water and chloride ligands. The additional water connects the ac sheets into a three-dimensional network. Both Cd and Cu occupy different sites. The Cu⋯Cu and Cd⋯Cd distances are 3.8274 (6) Å. [ABSTRACT FROM AUTHOR]