Synthesis, Characterization and Electrochemistry of Some Metal Carbonyl Clusters Derived from Ferrocenylethynylpyridine

Wai Yeung Wong; Qingchen Dong; Suk Ha Cheung; Pui Ling Lau; Nian Yong Zhu; Yih Hsing Lo; Hua Li

doi:10.1007/s10876-015-0861-2

Synthesis, Characterization and Electrochemistry of Some Metal Carbonyl Clusters Derived from Ferrocenylethynylpyridine

Wai Yeung Wong^*, Qingchen Dong, Suk Ha Cheung, Pui Ling Lau, Nian Yong Zhu, Yih Hsing Lo, Hua Li

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

2 Citations (Scopus)

Abstract

The chemical reactivity of ferrocenylethynylpyridine ligand with some metal complexes has been studied. Ligation of this ferrocenyl-functionalized pyridyl metalloligand with triosmium carbonyl cluster [Os₃(CO)₁₀(NCMe)₂] via oxidative addition led to a new supramolecular heterobimetallic cluster [Os₃(CO)₁₀(μ-H){μ-NC₅H₃C≡C(η⁵-C₅H₄)Fe(η⁵-C₅H₅)}] 1 in good yield. Coordination of Co₂(CO)₈ with the alkyne functionality of 1 gave another new heterotrimetallic cluster complex [Os₃(CO)₁₀(μ-H){μ-NC₅H₃{C₂Co₂(CO)₆}(η⁵-C₅H₄)Fe(η⁵-C₅H₅)}] 2 in which the molecule possesses a Co₂C₂ core adopting the pseudo-tetrahedral geometry having the alkyne bond lying perpendicular to the Co–Co vector. Characterization of 1 and 2 by IR and ¹H NMR spectroscopies indicated that these complexes consist of an orthometalated trinuclear carbonyl cluster unit rigidly connected to a ferrocenyl unit. Electrochemical studies on 1 and 2 revealed that both of them undergo a reversible one-electron oxidation at iron followed by an irreversible oxidation of the Os₃ cluster core. Another simple mononuclear zinc(II) complex [ZnCl₂{(NC₅H₄C≡C(η⁵-C₅H₄)Fe(η⁵-C₅H₅)}₂] 3 was also prepared for comparison of the electrochemical data with those of 1 and 2.

Original language	English
Pages (from-to)	461-471
Number of pages	11
Journal	Journal of Cluster Science
Volume	26
Issue number	2
DOIs	https://doi.org/10.1007/s10876-015-0861-2
Publication status	Published - Mar 2015

Scopus Subject Areas

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

User-Defined Keywords

Alkyne
Cluster
Cobalt
Ferrocene
Osmium

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10.1007/s10876-015-0861-2

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@article{f7a1f468f0cc43348ce757faf519d54c,

title = "Synthesis, Characterization and Electrochemistry of Some Metal Carbonyl Clusters Derived from Ferrocenylethynylpyridine",

abstract = "The chemical reactivity of ferrocenylethynylpyridine ligand with some metal complexes has been studied. Ligation of this ferrocenyl-functionalized pyridyl metalloligand with triosmium carbonyl cluster [Os3(CO)10(NCMe)2] via oxidative addition led to a new supramolecular heterobimetallic cluster [Os3(CO)10(μ-H){μ-NC5H3C≡C(η5-C5H4)Fe(η5-C5H5)}] 1 in good yield. Coordination of Co2(CO)8 with the alkyne functionality of 1 gave another new heterotrimetallic cluster complex [Os3(CO)10(μ-H){μ-NC5H3{C2Co2(CO)6}(η5-C5H4)Fe(η5-C5H5)}] 2 in which the molecule possesses a Co2C2 core adopting the pseudo-tetrahedral geometry having the alkyne bond lying perpendicular to the Co–Co vector. Characterization of 1 and 2 by IR and 1H NMR spectroscopies indicated that these complexes consist of an orthometalated trinuclear carbonyl cluster unit rigidly connected to a ferrocenyl unit. Electrochemical studies on 1 and 2 revealed that both of them undergo a reversible one-electron oxidation at iron followed by an irreversible oxidation of the Os3 cluster core. Another simple mononuclear zinc(II) complex [ZnCl2{(NC5H4C≡C(η5-C5H4)Fe(η5-C5H5)}2] 3 was also prepared for comparison of the electrochemical data with those of 1 and 2.",

keywords = "Alkyne, Cluster, Cobalt, Ferrocene, Osmium",

author = "Wong, {Wai Yeung} and Qingchen Dong and Cheung, {Suk Ha} and Lau, {Pui Ling} and Zhu, {Nian Yong} and Lo, {Yih Hsing} and Hua Li",

year = "2015",

month = mar,

doi = "10.1007/s10876-015-0861-2",

language = "English",

volume = "26",

pages = "461--471",

journal = "Journal of Cluster Science",

issn = "1040-7278",

publisher = "Springer New York",

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TY - JOUR

T1 - Synthesis, Characterization and Electrochemistry of Some Metal Carbonyl Clusters Derived from Ferrocenylethynylpyridine

AU - Wong, Wai Yeung

AU - Dong, Qingchen

AU - Cheung, Suk Ha

AU - Lau, Pui Ling

AU - Zhu, Nian Yong

AU - Lo, Yih Hsing

AU - Li, Hua

PY - 2015/3

Y1 - 2015/3

N2 - The chemical reactivity of ferrocenylethynylpyridine ligand with some metal complexes has been studied. Ligation of this ferrocenyl-functionalized pyridyl metalloligand with triosmium carbonyl cluster [Os3(CO)10(NCMe)2] via oxidative addition led to a new supramolecular heterobimetallic cluster [Os3(CO)10(μ-H){μ-NC5H3C≡C(η5-C5H4)Fe(η5-C5H5)}] 1 in good yield. Coordination of Co2(CO)8 with the alkyne functionality of 1 gave another new heterotrimetallic cluster complex [Os3(CO)10(μ-H){μ-NC5H3{C2Co2(CO)6}(η5-C5H4)Fe(η5-C5H5)}] 2 in which the molecule possesses a Co2C2 core adopting the pseudo-tetrahedral geometry having the alkyne bond lying perpendicular to the Co–Co vector. Characterization of 1 and 2 by IR and 1H NMR spectroscopies indicated that these complexes consist of an orthometalated trinuclear carbonyl cluster unit rigidly connected to a ferrocenyl unit. Electrochemical studies on 1 and 2 revealed that both of them undergo a reversible one-electron oxidation at iron followed by an irreversible oxidation of the Os3 cluster core. Another simple mononuclear zinc(II) complex [ZnCl2{(NC5H4C≡C(η5-C5H4)Fe(η5-C5H5)}2] 3 was also prepared for comparison of the electrochemical data with those of 1 and 2.

AB - The chemical reactivity of ferrocenylethynylpyridine ligand with some metal complexes has been studied. Ligation of this ferrocenyl-functionalized pyridyl metalloligand with triosmium carbonyl cluster [Os3(CO)10(NCMe)2] via oxidative addition led to a new supramolecular heterobimetallic cluster [Os3(CO)10(μ-H){μ-NC5H3C≡C(η5-C5H4)Fe(η5-C5H5)}] 1 in good yield. Coordination of Co2(CO)8 with the alkyne functionality of 1 gave another new heterotrimetallic cluster complex [Os3(CO)10(μ-H){μ-NC5H3{C2Co2(CO)6}(η5-C5H4)Fe(η5-C5H5)}] 2 in which the molecule possesses a Co2C2 core adopting the pseudo-tetrahedral geometry having the alkyne bond lying perpendicular to the Co–Co vector. Characterization of 1 and 2 by IR and 1H NMR spectroscopies indicated that these complexes consist of an orthometalated trinuclear carbonyl cluster unit rigidly connected to a ferrocenyl unit. Electrochemical studies on 1 and 2 revealed that both of them undergo a reversible one-electron oxidation at iron followed by an irreversible oxidation of the Os3 cluster core. Another simple mononuclear zinc(II) complex [ZnCl2{(NC5H4C≡C(η5-C5H4)Fe(η5-C5H5)}2] 3 was also prepared for comparison of the electrochemical data with those of 1 and 2.

KW - Alkyne

KW - Cluster

KW - Cobalt

KW - Ferrocene

KW - Osmium

UR - http://www.scopus.com/inward/record.url?scp=84925484559&partnerID=8YFLogxK

U2 - 10.1007/s10876-015-0861-2

DO - 10.1007/s10876-015-0861-2

M3 - Journal article

AN - SCOPUS:84925484559

SN - 1040-7278

VL - 26

SP - 461

EP - 471

JO - Journal of Cluster Science

JF - Journal of Cluster Science

IS - 2

ER -

Synthesis, Characterization and Electrochemistry of Some Metal Carbonyl Clusters Derived from Ferrocenylethynylpyridine

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