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Ethoxycarbonyl-, Cyano- and Methoxy-methyl Complexes of Nickel(II) and their Carbonylation Reactions

DOI: 10.1039/DT9920001491

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1491 - 1496 (1992)

Update date:2022-08-16

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Authors:

Belderrain, Tomas R.Belderrain, Tomas R.

Knight, D. AndrewKnight, D. Andrew

Irvine, Derek J.Irvine, Derek J.

Paneque, MargaritaPaneque, Margarita

Poveda, Manuel L.Poveda, Manuel L.

Carmona, ErnestoCarmona, Ernesto

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Article abstract of DOI:10.1039/DT9920001491

The oxidative addition of ClCH2CO2Et, ClCH2CN and BrCH2OMe to (cod = cycloocta-1,5-diene), in the presence of 2 equivalents of PMe3, affords the β-functionalized nickel(II) methyl derivatives trans- (R = CO2Et, X = Cl 1; R = CN, X = Cl 2; R = OMe, X = Br 3).The interaction of these complexes with carbon monoxide has been studied.The methoxymethyl derivative 3 forms a stable acyl of composition trans- 7, but for the ethoxycarbonylmethyl complex 1 the corresponding acyl 8 forms reversibly and although stable as a solid, only exists in solution under an atmosphere of carbon monoxide.No stable acyl has been observed from the reaction of 2 with CO; only decomposition occurs.Stable 18-electron alkyl and acyl cyclopentadienyl derivatives of composition occurs.Stable 18-electron alkyl and acyl cyclopentadienyl derivatives of composition (R = CO2Et 4; CN 5; or OMe 6) and (R = OMe 9 or CO2Et 10) are easily obtained upon reaction of the above 16-electron complexes with Na(C5H5).The new compounds have been fully characterized by analytical and spectroscopic (IR and 1H, 13C and 31P NMR) methods.

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Product name:BIS(1,5-CYCLOOCTADIENE)NICKEL(0)

Cas No:1295-35-8

1295-35-8

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