Bis(cyclooctadiene)nickel(0)
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| Bis(cyclooctadiene)nickel(0) | |
|---|---|
2.png/200px-Ni(cod)2.png) |
|
| Other names | nickel biscod |
| Identifiers | |
| CAS number | [1295-35-8] |
| RTECS number | QR6135000 |
| Properties | |
| Molecular formula | C16H24Ni |
| Molar mass | 275.06 g/mol |
| Appearance | Yellow solid |
| Melting point |
60 nbsp;°C with decomp. |
| Solubility in water | benzene, THF |
| Hazards | |
| R-phrases | Template:11-40 |
| S-phrases | Template:36/37 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and 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 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
- ^ Günther Wilke (1988). "Contributions to Organo-Nickel Chemistry". Angewandte Chemie International Edition in English vol. 27: 185-206. doi:.
- ^ R. A. Schunn, S. D. Ittel, and M. A. Cushing “Bis(cyclooctadiene)nickel” Inorganic Syntheses, Volume 28, 94-98. ISBN 0-471-52619-3.
