[ω‐(Phosphanyl)alkyl]cyclopentadienyl Complexes

authored by: Ralf T. Kettenbach, Werner Bonrath, Holger Butenschön
Abstract: The syntheses and characterisation of the [ω‐(phosphanyl)alkyl]cyclopentadienyl anions 2, 3, 6–8, 10, and 11 are described. These anions form metallocenes 12–15 and 17–19 with FeCl₂ · 2 THF and with ZrCl₄ · 2 THF, respectively. With ICo(CO)₄ chelated carbonbyl complexes 23–25, 28, and 29 are formed. The unchelated intermediate 20 has been detected by IR spectroscopy. The carbonyl chelate complexes are thermally stable. Under photochemical conditions, ligand exchange reactions are possible which in the case of 1,5‐cyclooctadiene proceed with decomplexation of the phosphane arm. This does not prevent a reaction at the cobalt(I) atom; treatment of 35 with diphenylethyne gives the corresponding tetraphenylcyclobutadiene complex 36 in good yield, the phosphane arm remaining uncoordinated.
External Organisation(s): Max-Planck-Institut für Kohlenforschung
Type: Article
Journal: Chemische Berichte
Volume: 126
Pages: 1657-1669
No. of pages: 13
ISSN: 0009-2940
Publication date: 07.1993
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Chemistry
Electronic version(s): https://doi.org/10.1002/cber.19931260725 (Access: Unknown)

BibTeX

@article{e52e424477174158a1c9026aa32dbb1b,
title = "[ω‐(Phosphanyl)alkyl]cyclopentadienyl Complexes",
abstract = "The syntheses and characterisation of the [ω‐(phosphanyl)alkyl]cyclopentadienyl anions 2, 3, 6–8, 10, and 11 are described. These anions form metallocenes 12–15 and 17–19 with FeCl2 · 2 THF and with ZrCl4 · 2 THF, respectively. With ICo(CO)4 chelated carbonbyl complexes 23–25, 28, and 29 are formed. The unchelated intermediate 20 has been detected by IR spectroscopy. The carbonyl chelate complexes are thermally stable. Under photochemical conditions, ligand exchange reactions are possible which in the case of 1,5‐cyclooctadiene proceed with decomplexation of the phosphane arm. This does not prevent a reaction at the cobalt(I) atom; treatment of 35 with diphenylethyne gives the corresponding tetraphenylcyclobutadiene complex 36 in good yield, the phosphane arm remaining uncoordinated.",
keywords = "Anions, [ω‐(phosphanyl)alkyl]cyclopentadienyl, Cobalt(I) chelate complexes, Cobalt, [ω‐(phosphanyl)alkyl]cyclopentadienyl complexes, Iron, [ω‐(phosphanyl)alkyl]cyclopentadienyl complexes, Zirconium, [ω‐(phosphanyl)alkyl]cyclopentadienyl complexes",
author = "Kettenbach, {Ralf T.} and Werner Bonrath and Holger Butensch{\"o}n",
year = "1993",
month = jul,
doi = "10.1002/cber.19931260725",
language = "English",
volume = "126",
pages = "1657--1669",
journal = "Chemische Berichte",
issn = "0009-2940",
publisher = "Wiley-VCH Verlag",
number = "7",
}