The title salt, [Yb(C4H10O2)4][Hg2(C6H5Se)6], consists of eight-coordinate homoleptic [Yb(DME)4]2+ dications (DME is 1,2-dimethoxy-ethane) countered with [Hg2(SePh)6]2- di-anions. The cations and anions have twofold rotation and inversion symmetry, respectively. The Yb centre displays a square-anti-prismatic coordination geometry and the Hg centre has a distorted tetra-hedral coordination environment. One phenyl-selenolate anion and one methyl group of a DME ligand are disordered over two positions with equal occupancies. This structure is unique in that it represents a less common mol-ecular lanthanide species in which the lanthanide ion is not directly bonded to an anionic ligand. There are no occurrences of the [Hg2(SePh)6]2- dianion in the Cambridge Structural Database (Version of November 2007), but there are similar oligomeric and polymeric Hg x (SePh) y species. The crystal structure is characterized by alternating layers of cations and anions stacked along the c axis.
|Original language||English (US)|
|Journal||Acta Crystallographica Section E: Structure Reports Online|
|State||Published - Aug 15 2008|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics