Finally fulfilling Wade's rules: The C4v symmetric polycation Bi95+ in the polar structure of Bi18Sn 7Br24 = (Bi95+)2[Sn 7Br2410-]
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Contributors
Abstract
The bismuth rich bromidostannate(II) Bi18Sn7Br 24 = (Bi95+)2[Sn7Br 2410-] was crystallized from a melt of bismuth, tin, and BiBr3. X-ray diffraction on a single crystal revealed a polar, tetragonal structure (space group I4cm, no. 108) with lattice parameters a = 1323.70(5) pm and c = 1816.86(8) pm at 110(5) K. In agreement with Wade's rules and quantum chemical calculations, the homonuclear nido cluster Bi 95+ is a monocapped square antiprism (point group C 4v). The anions of the bromidostannate(II) groups mainly comply with the pseudosymmetry of the space group I4/mcm and thereby affect substantial disorder of the SnII cations.
Details
| Original language | English |
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| Pages (from-to) | 337-342 |
| Number of pages | 6 |
| Journal | Zeitschrift fur Anorganische und Allgemeine Chemie |
| Volume | 636 |
| Issue number | 2 |
| Publication status | Published - Feb 2010 |
| Peer-reviewed | Yes |
External IDs
| ORCID | /0000-0002-2391-6025/work/159171908 |
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Keywords
ASJC Scopus subject areas
Keywords
- Bismuth, Cluster compounds, Electron counting rules, Polar structure, Pseudosymmetry