- Bis(cyclooctadiene)nickel(0)
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Bis(cyclooctadiene)nickel(0) Other namesnickel biscodIdentifiers CAS number 1295-35-8 ChemSpider 17215769 RTECS number QR6135000 Jmol-3D images Image 1 - C1C[C][C]CC[C][C]1.C1C[C][C]CC[C][C]1.[Ni]
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:
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)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.
References
- ^ Günther Wilke (1988). "Contributions to Organo-Nickel Chemistry". Angewandte Chemie International Edition in English 27: 185–206. doi:10.1002/anie.198801851.
- ^ R. A. Schunn, S. D. Ittel, and M. A. Cushing (1990). "Bis(cyclooctadiene)nickel". Inorg. Synth.. Inorganic Syntheses 28: 94–98. doi:10.1002/9780470132593.ch25. ISBN 9780470132593.
Categories:- Organonickel compounds
- Cod complexes
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