Pentacoordination in Group 15 ‘onium salts. A room-temperature synthesis of an intramolecularly pentacoordinated tetraarylstibonium salt containing the new polyiodocuprate anion [Cu14I18]4−, and a structural comparison with related pentacoordinated arsonium and phosphonium cations
✍ Scribed by David W Allen; Thomas Gelbrich; Michael B Hursthouse
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 203 KB
- Volume
- 318
- Category
- Article
- ISSN
- 0020-1693
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✦ Synopsis
Intramolecularly pentacoordinated tetraarylstibonium salts have been obtained at room temperature from the reactions of ortho-iodoarylimino coordination template systems with triarylstibines and copper(I) iodide in acetonitrile, the related bromo-and chloro-arenes being unreactive under these conditions. The X-ray crystal structure of one of these compounds has been determined, and found to contain, as the counter anion, a new type of poly(iodocuprate) species. The structure of the stibonium ion is compared with those of the structurally analogous arsonium and phosphonium cations, thus enabling a detailed comparison of bonding parameters for the heavier Group 15 elements.