Bis(cyclooctadiene)nickel(0)
| Bis(cyclooctadiene)nickel(0) | |
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Other names
nickel biscod |
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| Identifiers | |
| CAS number | 1295-35-8  |
| ChemSpider | 17215769 |
| RTECS number | QR6135000 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C16H24Ni |
| Molar mass | 275.06 g/mol |
| Appearance | Yellow solid |
| Melting point |
60 °C with decomp. |
| Hazards | |
| R-phrases | Template:R11-40 |
| S-phrases | S36/37 |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Bis(cyclooctadiene)nickel(0) is the organometallic compound with the formula Ni(C8H12)2. This air-sensitive yellow solid is a common source of Ni(0) in chemical synthesis.[1]
Ni(cod)2, as it is commonly abbreviated, is a diamagnetic coordination complex featuring tetrahedral nickel(0) bound to the alkene groups in two 1,5-cyclooctadiene ligands. The complex is prepared by reduction of anhydrous nickel(II) acetylacetonate in the presence of the diolefin:
- 1/3 [Ni3(acac)6] + 2 cod + 2 AlEt3 → Ni(cod)2 + 2 acacAlEt2 + C2H6 + C2H4
Ni(cod)2 is moderately soluble in benzene and THF.[2] The cod ligands are easily displaced by phosphines, phosphites, and isocyanides.
[edit] References
- ^ Wilke, G. (1988). "Contributions to Organo-Nickel Chemistry". Angewandte Chemie International Edition 27 (1): 185–206. doi:10.1002/anie.198801851.
- ^ Schunn, R. A.; Ittel, S. D.; Cushing, M. A.; Baker, R.; Gilbert, R. J.; Madden, D. P. (1990). "Bis(1,5-Cyclooctadiene)Nickel(0)". Inorganic Syntheses 28: 94–98. doi:10.1002/9780470132593.ch25. ISBN 978-0-470-13259-3.
