Synthetic applications of the photolysis of the cyclopentadienyliron-(ρ-xylene) cation

Thomas P. Gill; Kent R. Mann

doi:10.1016/S0022-328X(00)84001-2

Synthetic applications of the photolysis of the cyclopentadienyliron-(ρ-xylene) cation

Thomas P. Gill, Kent R. Mann

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

61 Scopus citations

Abstract

Photolysis of CpFe(ρ-xylene)⁺ (Cp = η⁵-cyclopentadienyl) in the presence of suitable 6- or 2-electron donor ligands results in replacement of the aromatic ring with one 6-electron or three 2-electron donor ligands. The compounds [CPFe(η⁶-C₇H₈)]BF₄ (C₇H₈ = cycloheptatriene), [CpFe(η⁶-C₈H₈)]PF₆, (C₈H₈ = cyclooctatetraene), [CpFe(η⁶-PCP)]PF₆ (PCP = 2,2-paracyclophane), [CpFe-(P(OCH₃)₃)₃]PF₆ and [CpFe(P(OCH₂CH₃)₃)₃]PF₆ were prepared in this manner. The compound [CpFe(TM4)₃FeCp](PF₆)₂ · CH₃COCH₃ (TM4 = 2,5-dimethyl-2,5 diisocyanohexane) was prepared in two steps. First, [CpFe(ρ-xylene)]PF₆ was irradiated with an excess of the free TM4 ligand producing a mixture of [CpFe(TM4)₃]⁺ and [CpFe(TM4)₃FeCp]²⁺. An additional equivalent of [CpFe(p-xylene)]PF₆ was added to this mixture and photolysis yielded [CpFe(TM4)₃FeCp](PF₆)₂ · CH₃COCH₃.

Original language	English (US)
Pages (from-to)	65-71
Number of pages	7
Journal	Journal of Organometallic Chemistry
Volume	216
Issue number	1
DOIs	https://doi.org/10.1016/S0022-328X(00)84001-2
State	Published - Aug 11 1981

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@article{d8fc5964eee14ef98a5a44c00daf5940,

title = "Synthetic applications of the photolysis of the cyclopentadienyliron-(ρ-xylene) cation",

abstract = "Photolysis of CpFe(ρ-xylene)+ (Cp = η5-cyclopentadienyl) in the presence of suitable 6- or 2-electron donor ligands results in replacement of the aromatic ring with one 6-electron or three 2-electron donor ligands. The compounds [CPFe(η6-C7H8)]BF4 (C7H8 = cycloheptatriene), [CpFe(η6-C8H8)]PF6, (C8H8 = cyclooctatetraene), [CpFe(η6-PCP)]PF6 (PCP = 2,2-paracyclophane), [CpFe-(P(OCH3)3)3]PF6 and [CpFe(P(OCH2CH3)3)3]PF6 were prepared in this manner. The compound [CpFe(TM4)3FeCp](PF6)2 · CH3COCH3 (TM4 = 2,5-dimethyl-2,5 diisocyanohexane) was prepared in two steps. First, [CpFe(ρ-xylene)]PF6 was irradiated with an excess of the free TM4 ligand producing a mixture of [CpFe(TM4)3]+ and [CpFe(TM4)3FeCp]2+. An additional equivalent of [CpFe(p-xylene)]PF6 was added to this mixture and photolysis yielded [CpFe(TM4)3FeCp](PF6)2 · CH3COCH3.",

author = "Gill, {Thomas P.} and Mann, {Kent R.}",

year = "1981",

month = aug,

day = "11",

doi = "10.1016/S0022-328X(00)84001-2",

language = "English (US)",

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pages = "65--71",

journal = "Journal of Organometallic Chemistry",

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publisher = "Elsevier",

number = "1",

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T1 - Synthetic applications of the photolysis of the cyclopentadienyliron-(ρ-xylene) cation

AU - Gill, Thomas P.

AU - Mann, Kent R.

PY - 1981/8/11

Y1 - 1981/8/11

N2 - Photolysis of CpFe(ρ-xylene)+ (Cp = η5-cyclopentadienyl) in the presence of suitable 6- or 2-electron donor ligands results in replacement of the aromatic ring with one 6-electron or three 2-electron donor ligands. The compounds [CPFe(η6-C7H8)]BF4 (C7H8 = cycloheptatriene), [CpFe(η6-C8H8)]PF6, (C8H8 = cyclooctatetraene), [CpFe(η6-PCP)]PF6 (PCP = 2,2-paracyclophane), [CpFe-(P(OCH3)3)3]PF6 and [CpFe(P(OCH2CH3)3)3]PF6 were prepared in this manner. The compound [CpFe(TM4)3FeCp](PF6)2 · CH3COCH3 (TM4 = 2,5-dimethyl-2,5 diisocyanohexane) was prepared in two steps. First, [CpFe(ρ-xylene)]PF6 was irradiated with an excess of the free TM4 ligand producing a mixture of [CpFe(TM4)3]+ and [CpFe(TM4)3FeCp]2+. An additional equivalent of [CpFe(p-xylene)]PF6 was added to this mixture and photolysis yielded [CpFe(TM4)3FeCp](PF6)2 · CH3COCH3.

AB - Photolysis of CpFe(ρ-xylene)+ (Cp = η5-cyclopentadienyl) in the presence of suitable 6- or 2-electron donor ligands results in replacement of the aromatic ring with one 6-electron or three 2-electron donor ligands. The compounds [CPFe(η6-C7H8)]BF4 (C7H8 = cycloheptatriene), [CpFe(η6-C8H8)]PF6, (C8H8 = cyclooctatetraene), [CpFe(η6-PCP)]PF6 (PCP = 2,2-paracyclophane), [CpFe-(P(OCH3)3)3]PF6 and [CpFe(P(OCH2CH3)3)3]PF6 were prepared in this manner. The compound [CpFe(TM4)3FeCp](PF6)2 · CH3COCH3 (TM4 = 2,5-dimethyl-2,5 diisocyanohexane) was prepared in two steps. First, [CpFe(ρ-xylene)]PF6 was irradiated with an excess of the free TM4 ligand producing a mixture of [CpFe(TM4)3]+ and [CpFe(TM4)3FeCp]2+. An additional equivalent of [CpFe(p-xylene)]PF6 was added to this mixture and photolysis yielded [CpFe(TM4)3FeCp](PF6)2 · CH3COCH3.

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