Tetra-kis(1,2-dimethoxy-ethane-κ2 O,O′)ytterbium(II) bis-(μ2-phenyl-selenolato-2 κ2Se:Se)bis-[bis- (phenyl-selenolato-Se)mercurate(II)]

Michael D. Romanelli, Thomas J. Emge, John G. Brennan

Research output: Contribution to journalArticle

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Abstract

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 languageEnglish (US)
Pages (from-to)m987-m988
JournalActa Crystallographica Section E: Structure Reports Online
Volume64
Issue number8
DOIs
StatePublished - Aug 15 2008

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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