Formal [2 + 2] and [4 + 2] cycloaddition reactions of iron(Ii) acetylide complexes. x-ray crystallographic structure determinations of [1,2-bis(diphenylphosphino)ethane](η5-cyclopentadienyl)(4,4-diphenyl-2-methyl-3-oxo-1-cyclobutenyl)iron(ii) and [1,2 is (diphenylphosphino)ethane](2-cyano-4-methylene-1-cyclobutenyl) (η5-cyclopentadienyl) iron (ii)

Anthony G.M. Barrett, Nancy E. Carpenter, Jacques Mortier, Michal Sabat

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The iron(II) acetylide complexes 8, 12, and 13 reacted with diphenylketene, phenylethylketene, 3,3-dimethylbutanoyl chloride, 2-chloroacrylonitrile, diketene, dimethyl methylenemalonate, and 1,3-dicyano-l,3-butadiene to produce the corresponding formal [2 + 2] and [4 + 2] cycloadducts. The structures of (diphos)(Cp)FeC═C(Me)COC(Ph)2 (space group P2l/n (No. 14), Z = 4, a = 15.187 (2) Å, b = 18.548 (4) Å, c = 15.631 (2) Å,β = 109.16 (1)°, R(F) = 0.077) and (diphos)(Cp)FeC═C(CN)CH2C(═CH2) (space group Pna2l (No. 33), Z = 4, a = 18.860 (2) Å, b = 10.050 (1) Å, c = 15.733 (4) Å, R(F) = 0.038) were determined by X-ray crystallography.

Original languageEnglish (US)
Pages (from-to)151-156
Number of pages6
JournalOrganometallics
Volume9
Issue number1
DOIs
StatePublished - Jan 1 1990
Externally publishedYes

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