Protonation of cobalt-allene constitutional isomers: Highly selective formation of cobalt-allyl and oxacobaltacyclopentadiene complexes

Joseph M. O'Connor; Ming Chou Chen; Ryan L. Holland

doi:10.1021/om100701e

Protonation of cobalt-allene constitutional isomers: Highly selective formation of cobalt-allyl and oxacobaltacyclopentadiene complexes

Joseph M. O'Connor, Ming Chou Chen, Ryan L. Holland

化學學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

5 引文斯高帕斯（Scopus）

摘要

The first reactivity studies of mononuclear cobalt-allene complexes are reported. The isomeric cobalt-allene complexes (RS,RS,Z)-[(η⁵- C₅H₅)Co(1,2-η²-CH(SO₂Ph)=C= CH(CO₂Et))] (2-Z) and (SR,RS,E)-[(η⁵-C ₅H₅)Co(2,3-η²-CH(SO₂Ph)=C= CH(CO₂Et))] (3-E) undergo protonation with HBF₄ to give the cationic π-allyl complex (η⁵-C₅H ₅)Co(PPh₃)[exo-η³-CH(CO₂Et) CHCH(SO₂Ph)](BF₄) (4) and the first structurally characterized oxacobaltacyclopentadiene complex, (η⁵-C ₅H₅)Co(PPh₃)[κ²-OC(OEt)CH= C(CH₂SO₂Ph)](BF₄) (5-BF₄), respectively. Deprotonation of 5-BF₄ regenerates cobalt-allene complex 3-E, as well as 2-Z.

原文	???core.languages.en_GB???
頁（從 - 到）	6161-6164
頁數	4
期刊	Organometallics
卷	29
發行號	23
DOIs	https://doi.org/10.1021/om100701e
出版狀態	已出版 - 13 12月 2010

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10.1021/om100701e

CCDC 811527: Experimental Crystal Structure Determination
O'Connor, J. M. (???dataset.roles.dataset.creator???), Chen, M.-C. (???dataset.roles.dataset.creator???) & Holland, R. L. (???dataset.roles.dataset.creator???), The Cambridge Structural Database, 2011
DOI: 10.5517/ccw7g9v, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccw7g9v&sid=DataCite
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title = "Protonation of cobalt-allene constitutional isomers: Highly selective formation of cobalt-allyl and oxacobaltacyclopentadiene complexes",

abstract = "The first reactivity studies of mononuclear cobalt-allene complexes are reported. The isomeric cobalt-allene complexes (RS,RS,Z)-[(η5- C5H5)Co(1,2-η2-CH(SO2Ph)=C= CH(CO2Et))] (2-Z) and (SR,RS,E)-[(η5-C 5H5)Co(2,3-η2-CH(SO2Ph)=C= CH(CO2Et))] (3-E) undergo protonation with HBF4 to give the cationic π-allyl complex (η5-C5H 5)Co(PPh3)[exo-η3-CH(CO2Et) CHCH(SO2Ph)](BF4) (4) and the first structurally characterized oxacobaltacyclopentadiene complex, (η5-C 5H5)Co(PPh3)[κ2-OC(OEt)CH= C(CH2SO2Ph)](BF4) (5-BF4), respectively. Deprotonation of 5-BF4 regenerates cobalt-allene complex 3-E, as well as 2-Z.",

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T1 - Protonation of cobalt-allene constitutional isomers

T2 - Highly selective formation of cobalt-allyl and oxacobaltacyclopentadiene complexes

AU - O'Connor, Joseph M.

AU - Chen, Ming Chou

AU - Holland, Ryan L.

PY - 2010/12/13

Y1 - 2010/12/13

N2 - The first reactivity studies of mononuclear cobalt-allene complexes are reported. The isomeric cobalt-allene complexes (RS,RS,Z)-[(η5- C5H5)Co(1,2-η2-CH(SO2Ph)=C= CH(CO2Et))] (2-Z) and (SR,RS,E)-[(η5-C 5H5)Co(2,3-η2-CH(SO2Ph)=C= CH(CO2Et))] (3-E) undergo protonation with HBF4 to give the cationic π-allyl complex (η5-C5H 5)Co(PPh3)[exo-η3-CH(CO2Et) CHCH(SO2Ph)](BF4) (4) and the first structurally characterized oxacobaltacyclopentadiene complex, (η5-C 5H5)Co(PPh3)[κ2-OC(OEt)CH= C(CH2SO2Ph)](BF4) (5-BF4), respectively. Deprotonation of 5-BF4 regenerates cobalt-allene complex 3-E, as well as 2-Z.

AB - The first reactivity studies of mononuclear cobalt-allene complexes are reported. The isomeric cobalt-allene complexes (RS,RS,Z)-[(η5- C5H5)Co(1,2-η2-CH(SO2Ph)=C= CH(CO2Et))] (2-Z) and (SR,RS,E)-[(η5-C 5H5)Co(2,3-η2-CH(SO2Ph)=C= CH(CO2Et))] (3-E) undergo protonation with HBF4 to give the cationic π-allyl complex (η5-C5H 5)Co(PPh3)[exo-η3-CH(CO2Et) CHCH(SO2Ph)](BF4) (4) and the first structurally characterized oxacobaltacyclopentadiene complex, (η5-C 5H5)Co(PPh3)[κ2-OC(OEt)CH= C(CH2SO2Ph)](BF4) (5-BF4), respectively. Deprotonation of 5-BF4 regenerates cobalt-allene complex 3-E, as well as 2-Z.

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DO - 10.1021/om100701e

M3 - 期刊論文

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SN - 0276-7333

VL - 29

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JO - Organometallics

JF - Organometallics

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Protonation of cobalt-allene constitutional isomers: Highly selective formation of cobalt-allyl and oxacobaltacyclopentadiene complexes

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CCDC 811527: Experimental Crystal Structure Determination

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