Surface Organometallic Chemistry: Evidence of Disproportionation of Co2(CO)8to Co2+[Co(CO)4]- 2at the Surface of Partially Hydroxylated Magnesia

Narcisso Homs; Agnès Choplin; Pilar Ramirez de la Piscina; Lin Huang; Edouard Garbowski; Roberto Sanchez-Delgado; Albert Theoliér; Jean Marie Basset

doi:10.1021/ic00295a027

Surface Organometallic Chemistry: Evidence of Disproportionation of Co₂(CO)₈to Co²⁺[Co(CO)₄]^- ₂at the Surface of Partially Hydroxylated Magnesia

Narcisso Homs, Agnès Choplin^*, Pilar Ramirez de la Piscina, Lin Huang, Edouard Garbowski, Roberto Sanchez-Delgado, Albert Theoliér, Jean Marie Basset

^*Corresponding author for this work

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

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Abstract

Chemisorption of Co₂(CO)₈on a partially hydroxylated mAgnèsia surface has been followed by in situ IR and UV spectroscopies and gas-phase analysis. The complex is quickly disproportionated at room temperature into Co²⁺and [Co(CO)₄]^-with evolution of ca. 3 mol of CO/mol of Co₂(CO)₈. On the surface, [Co(CO)₄]^-has been characterized mainly by IR spectroscopy and Co²⁺by UV spectroscopy. Both Co²⁺and [Co(CO)₄]^-could be quantitatively extracted from the surface by [PPN]Cl as [PPN]^-[Co(CO)₄] and [PPN]₂[CoCl₄], respectively. Chemisorption of [PPN][Co(CO)₄] on mAgnèsia suggests that [Co(CO)₄]^-is coordinated to Mg²⁺surface sites rather than Co²⁺via heteronuclear metal-metal ion pairing.

Original language	English (US)
Pages (from-to)	4030-4033
Number of pages	4
Journal	Inorganic chemistry
Volume	27
Issue number	22
DOIs	https://doi.org/10.1021/ic00295a027
State	Published - 1988
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{2171f994c79e445caf4e847ada3a1059,

title = "Surface Organometallic Chemistry: Evidence of Disproportionation of Co2(CO)8to Co2+[Co(CO)4]- 2at the Surface of Partially Hydroxylated Magnesia",

abstract = "Chemisorption of Co2(CO)8on a partially hydroxylated mAgn{\`e}sia surface has been followed by in situ IR and UV spectroscopies and gas-phase analysis. The complex is quickly disproportionated at room temperature into Co2+and [Co(CO)4]-with evolution of ca. 3 mol of CO/mol of Co2(CO)8. On the surface, [Co(CO)4]-has been characterized mainly by IR spectroscopy and Co2+by UV spectroscopy. Both Co2+and [Co(CO)4]-could be quantitatively extracted from the surface by [PPN]Cl as [PPN]-[Co(CO)4] and [PPN]2[CoCl4], respectively. Chemisorption of [PPN][Co(CO)4] on mAgn{\`e}sia suggests that [Co(CO)4]-is coordinated to Mg2+surface sites rather than Co2+via heteronuclear metal-metal ion pairing.",

author = "Narcisso Homs and Agn{\`e}s Choplin and {Ramirez de la Piscina}, Pilar and Lin Huang and Edouard Garbowski and Roberto Sanchez-Delgado and Albert Theoli{\'e}r and Basset, {Jean Marie}",

year = "1988",

doi = "10.1021/ic00295a027",

language = "English (US)",

volume = "27",

pages = "4030--4033",

journal = "Inorganic chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "22",

}

TY - JOUR

T1 - Surface Organometallic Chemistry

T2 - Evidence of Disproportionation of Co2(CO)8to Co2+[Co(CO)4]- 2at the Surface of Partially Hydroxylated Magnesia

AU - Homs, Narcisso

AU - Choplin, Agnès

AU - Ramirez de la Piscina, Pilar

AU - Huang, Lin

AU - Garbowski, Edouard

AU - Sanchez-Delgado, Roberto

AU - Theoliér, Albert

AU - Basset, Jean Marie

PY - 1988

Y1 - 1988

N2 - Chemisorption of Co2(CO)8on a partially hydroxylated mAgnèsia surface has been followed by in situ IR and UV spectroscopies and gas-phase analysis. The complex is quickly disproportionated at room temperature into Co2+and [Co(CO)4]-with evolution of ca. 3 mol of CO/mol of Co2(CO)8. On the surface, [Co(CO)4]-has been characterized mainly by IR spectroscopy and Co2+by UV spectroscopy. Both Co2+and [Co(CO)4]-could be quantitatively extracted from the surface by [PPN]Cl as [PPN]-[Co(CO)4] and [PPN]2[CoCl4], respectively. Chemisorption of [PPN][Co(CO)4] on mAgnèsia suggests that [Co(CO)4]-is coordinated to Mg2+surface sites rather than Co2+via heteronuclear metal-metal ion pairing.

AB - Chemisorption of Co2(CO)8on a partially hydroxylated mAgnèsia surface has been followed by in situ IR and UV spectroscopies and gas-phase analysis. The complex is quickly disproportionated at room temperature into Co2+and [Co(CO)4]-with evolution of ca. 3 mol of CO/mol of Co2(CO)8. On the surface, [Co(CO)4]-has been characterized mainly by IR spectroscopy and Co2+by UV spectroscopy. Both Co2+and [Co(CO)4]-could be quantitatively extracted from the surface by [PPN]Cl as [PPN]-[Co(CO)4] and [PPN]2[CoCl4], respectively. Chemisorption of [PPN][Co(CO)4] on mAgnèsia suggests that [Co(CO)4]-is coordinated to Mg2+surface sites rather than Co2+via heteronuclear metal-metal ion pairing.

UR - http://www.scopus.com/inward/record.url?scp=0000555171&partnerID=8YFLogxK

U2 - 10.1021/ic00295a027

DO - 10.1021/ic00295a027

M3 - Article

AN - SCOPUS:0000555171

SN - 0020-1669

VL - 27

SP - 4030

EP - 4033

JO - Inorganic chemistry

JF - Inorganic chemistry

IS - 22

ER -

Surface Organometallic Chemistry: Evidence of Disproportionation of Co₂(CO)₈to Co²⁺[Co(CO)₄]^- ₂at the Surface of Partially Hydroxylated Magnesia

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