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Generation of reactive cyclopentadienylcobalt(I) derivatives by reduction of dicyclopentadienyldicobalt tetraiodide

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1981

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Lee, Wai-Sun

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http://nbn-resolving.de/urn:nbn:de:bsz:352-239538
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https://doi.org/10.1016/S0022-328X(00)81196-1
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Journal of Organometallic Chemistry. 1981, 209(3), pp. 401-406. ISSN 0022-328X. Available under: doi: 10.1016/S0022-328X(00)81196-1

Zusammenfassung

Reduction of [(C5H5)CoI2]2 by sodium amalgam in toluene in the presence of 1,3-butadiene, 1,3-cyclohexadiene or 1,5-cyclooctadiene affords the corresponding cyclopentadienylcobalt(I) diolefin complexes in high yields. Reduction of [(C5H5)CoI2]2 in the presence of 2-butyne yields the binuclear metallocyclic compound (C5H5)2Co2(C4(CH3)4), previously characterized as a structurally fluxional catalyst for alkyne cyclotrimerisation, as the major product; a trinuclear dicarbyne compound, (C5H5)3Co3(C-CH3)2, is obtained as a minor product. With diphenylacetylene, the analogous phenylcarbyne derivative (C5H5)3Co3(C-C6H5)2, previously obtained from thermal reaction with (C5H5)Co(CO)2, is obtained along with the major product, the tetraphenylcyclobutadiene complex (C5H5)Co(C4(C6H5)4). Pathways and intermediates for these reactions are discussed.

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540 Chemie

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ISO 690LEE, Wai-Sun, Hans-Herbert BRINTZINGER, 1981. Generation of reactive cyclopentadienylcobalt(I) derivatives by reduction of dicyclopentadienyldicobalt tetraiodide. In: Journal of Organometallic Chemistry. 1981, 209(3), pp. 401-406. ISSN 0022-328X. Available under: doi: 10.1016/S0022-328X(00)81196-1
BibTex
@article{Lee1981Gener-23953,
  year={1981},
  doi={10.1016/S0022-328X(00)81196-1},
  title={Generation of reactive cyclopentadienylcobalt(I) derivatives by reduction of dicyclopentadienyldicobalt tetraiodide},
  number={3},
  volume={209},
  issn={0022-328X},
  journal={Journal of Organometallic Chemistry},
  pages={401--406},
  author={Lee, Wai-Sun and Brintzinger, Hans-Herbert}
}
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