Cluster Build-up Reactions using Di-gold Cationic Fragments: Synthesis and Structural Characterization of [Os7(CO)19(Au2dppm)]

Zareen Ahkter; Andrew J. Edwards; Scott L. Ingham; Jack Lewis; Ana M. Martin Castro; Paul R. Raithby; Gregory P. Shields

doi:10.1023/A:1009025101208

Cluster Build-up Reactions using Di-gold Cationic Fragments: Synthesis and Structural Characterization of [Os₇(CO)₁₉(Au₂dppm)]

Zareen Ahkter, Andrew J. Edwards, Scott L. Ingham, Jack Lewis, Ana M. Martin Castro, Paul R. Raithby, Gregory P. Shields

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

14 Citations (SciVal)

Abstract

The reaction of the di-gold cation [Au₂(dppx)]²⁺ with the heptanuclear cluster dianion [Os₇(CO)₂₀]^2- affords the mixed metal cluster [Os₇(CO)₂₀{Au₂ (dppx)}] (x = m (1), e (2), b (3)). On standing, in solution, this complex undergoes decarbonylation to give the cluster [Os₇(CO)₁₉{Au₂(dppx)}] (x = m (4), e (5), b (6)). The complexes have been characterised spectroscopically, and an X-ray structure determination of the dppm derivative shows that it contains a metal core based on an Os₇ edge-bridged bicapped tetrahedron with the two μ₃-Au atoms capping adjacent triangular Os₃ faces of the central tetrahedron. In an analogous reaction, the carbido anion [Os₇(H)C(CO)₁₉]^- affords the neutral cluster [Os₇C(CO)₁₉{Au₂(dppm)}] (7) when treated with [Au₂(dppm)]²⁺ in the presence of base.

Original language	English
Pages (from-to)	217-226
Number of pages	10
Journal	Journal of Cluster Science
Volume	11
Issue number	1
DOIs	https://doi.org/10.1023/A:1009025101208
Publication status	Published - 2000

Keywords

Carbonyl
Cluster
Crystal structure
Gold
Heteronuclear
Osmium
Phosphine

ASJC Scopus subject areas

Biochemistry
Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1023/A:1009025101208

Cite this

@article{39879352178c4281aaf6a7ce57291032,

title = "Cluster Build-up Reactions using Di-gold Cationic Fragments: Synthesis and Structural Characterization of [Os7(CO)19(Au2dppm)]",

abstract = "The reaction of the di-gold cation [Au2(dppx)]2+ with the heptanuclear cluster dianion [Os7(CO)20]2- affords the mixed metal cluster [Os7(CO)20{Au2 (dppx)}] (x = m (1), e (2), b (3)). On standing, in solution, this complex undergoes decarbonylation to give the cluster [Os7(CO)19{Au2(dppx)}] (x = m (4), e (5), b (6)). The complexes have been characterised spectroscopically, and an X-ray structure determination of the dppm derivative shows that it contains a metal core based on an Os7 edge-bridged bicapped tetrahedron with the two μ3-Au atoms capping adjacent triangular Os3 faces of the central tetrahedron. In an analogous reaction, the carbido anion [Os7(H)C(CO)19]- affords the neutral cluster [Os7C(CO)19{Au2(dppm)}] (7) when treated with [Au2(dppm)]2+ in the presence of base.",

keywords = "Carbonyl, Cluster, Crystal structure, Gold, Heteronuclear, Osmium, Phosphine",

author = "Zareen Ahkter and Edwards, {Andrew J.} and Ingham, {Scott L.} and Jack Lewis and {Martin Castro}, {Ana M.} and Raithby, {Paul R.} and Shields, {Gregory P.}",

year = "2000",

doi = "10.1023/A:1009025101208",

language = "English",

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pages = "217--226",

journal = "Journal of Cluster Science",

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publisher = "Springer New York",

number = "1",

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T2 - Synthesis and Structural Characterization of [Os7(CO)19(Au2dppm)]

AU - Ahkter, Zareen

AU - Edwards, Andrew J.

AU - Ingham, Scott L.

AU - Lewis, Jack

AU - Martin Castro, Ana M.

AU - Raithby, Paul R.

AU - Shields, Gregory P.

PY - 2000

Y1 - 2000

N2 - The reaction of the di-gold cation [Au2(dppx)]2+ with the heptanuclear cluster dianion [Os7(CO)20]2- affords the mixed metal cluster [Os7(CO)20{Au2 (dppx)}] (x = m (1), e (2), b (3)). On standing, in solution, this complex undergoes decarbonylation to give the cluster [Os7(CO)19{Au2(dppx)}] (x = m (4), e (5), b (6)). The complexes have been characterised spectroscopically, and an X-ray structure determination of the dppm derivative shows that it contains a metal core based on an Os7 edge-bridged bicapped tetrahedron with the two μ3-Au atoms capping adjacent triangular Os3 faces of the central tetrahedron. In an analogous reaction, the carbido anion [Os7(H)C(CO)19]- affords the neutral cluster [Os7C(CO)19{Au2(dppm)}] (7) when treated with [Au2(dppm)]2+ in the presence of base.

AB - The reaction of the di-gold cation [Au2(dppx)]2+ with the heptanuclear cluster dianion [Os7(CO)20]2- affords the mixed metal cluster [Os7(CO)20{Au2 (dppx)}] (x = m (1), e (2), b (3)). On standing, in solution, this complex undergoes decarbonylation to give the cluster [Os7(CO)19{Au2(dppx)}] (x = m (4), e (5), b (6)). The complexes have been characterised spectroscopically, and an X-ray structure determination of the dppm derivative shows that it contains a metal core based on an Os7 edge-bridged bicapped tetrahedron with the two μ3-Au atoms capping adjacent triangular Os3 faces of the central tetrahedron. In an analogous reaction, the carbido anion [Os7(H)C(CO)19]- affords the neutral cluster [Os7C(CO)19{Au2(dppm)}] (7) when treated with [Au2(dppm)]2+ in the presence of base.

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KW - Crystal structure

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KW - Heteronuclear

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