Synthesis and Full Characterisation of the First Discrete Binuclear Complex Featuring a Two-Electron (σ) μ2-κC:κC Bridging Cyanide
✍ Scribed by Vito Lippolis; Alexander J. Blake; Paul A. Cooke; Francesco Isaia; Wan-Sheung Li; Martin Schröder
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 137 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0947-6539
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✦ Synopsis
Small ring macrocycles incorporating nitrile-functionalised arms can support binuclear Ag I complexes bearing bridging CN À ligands. The X-ray crystal structure, IR and CP MAS 13 C NMR spectra are reported for [Ag 2 (L 1 ) 2 (m-CN)][BF 4 ] ´MeCN (1), which represents the first complex incorporating a discrete m 2 -kC:kC symmetrically bridged two-electron-donating CN À ligand. The complexes [Ag 2 (L 2 ) 2 (m-CN)]-[BF 4 ] (3), and [Ag 2 (L 3 ) 2 (m-CN)][BF 4 ]
(4), have also been synthesised, and have been characterised both structurally and spectroscopically. In contrast to 1, 3 and 4 feature linear bridging m 2 -kC:kN, four-electron-donating CN À ligands. Therefore, the length of the aliphatic chain in the functionalised macrocycles plays a crucial role in determining the observed co-ordination mode of the bridging CN À ligand.