Mixed-metal cluster chemistry 25 Mixed ligand derivatives of MoIr3(μ-CO)3(CO)8(η-C5 R5) (R=H, Me) (see abstract)

Alistair J. Usher; Mark G. Humphrey; Anthony C. Willis

doi:10.1016/S0022-328X(03)00692-2

Mixed-metal cluster chemistry 25 Mixed ligand derivatives of MoIr₃(μ-CO)₃(CO)₈(η-C₅ R₅) (R=H, Me) (see abstract)

Alistair J. Usher, Mark G. Humphrey^*, Anthony C. Willis

^*Corresponding author for this work

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Abstract

Reactions of MoIr₃(μ-CO)₃(CO)₈ (η-C₅Me₅) (1) with stoichiometric amounts of the isocyanide Bu^tNC afford the ligand substituted clusters MoIr₃(μ-CO)₃ (CNBu^t)_n(CO)_8-n(η-C₅ Me₅) (n=1 (2), 2 (3), 3 (4)) in fair to good yields (13-58%). In contrast, 1 reacts with PPh₃ to afford a single unexpected product, namely MoIr₃(μ-CO)₃(CO)₆ (PPh₃)₂(η-C₅Me₅) (5). A single-crystal X-ray study of 5 reveals that the phosphines occupy coordination sites adjacent to the plane of bridging carbonyls in a radial-radial-axial conformation previously unobserved in structural studies of molybdenum-tri-iridium or tungsten-tri-iridium clusters. Reactions of Mo₂Ir₂(μ-CO)₃ (CO)₇(η-C₅H₅)₂ (6) with Bu^tNC or diphenylacetylene proceed cleanly in high yield to afford Mo₂Ir₂(μ-CO)₂ (CNBu^t)₂(CO)₆(η-C₅ H₅)₂ (7) or Mo₂Ir₂ (μ₄-η²-PhC₂Ph) (μ-CO)₄(CO)₄(η-C₅H₅) ₂ (8), respectively; reacting 7 with diphenylacetylene or 8 with Bu^tNC results in a more complex mixture of products from which Mo₂Ir₂(μ₄-η ²-PhC₂Ph)(μ-CO)₄(CNBu^t) (CO)₃(η-C₅H₅)₂ (9) can be isolated in low yield.

Original language	English
Pages (from-to)	41-48
Number of pages	8
Journal	Journal of Organometallic Chemistry
Volume	682
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-328X(03)00692-2
Publication status	Published - 1 Oct 2003

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@article{04e24370e6ed4a5d9306165b9412c21b,

title = "Mixed-metal cluster chemistry 25 Mixed ligand derivatives of MoIr3(μ-CO)3(CO)8(η-C5 R5) (R=H, Me) (see abstract)",

abstract = "Reactions of MoIr3(μ-CO)3(CO)8 (η-C5Me5) (1) with stoichiometric amounts of the isocyanide ButNC afford the ligand substituted clusters MoIr3(μ-CO)3 (CNBut)n(CO)8-n(η-C5 Me5) (n=1 (2), 2 (3), 3 (4)) in fair to good yields (13-58\%). In contrast, 1 reacts with PPh3 to afford a single unexpected product, namely MoIr3(μ-CO)3(CO)6 (PPh3)2(η-C5Me5) (5). A single-crystal X-ray study of 5 reveals that the phosphines occupy coordination sites adjacent to the plane of bridging carbonyls in a radial-radial-axial conformation previously unobserved in structural studies of molybdenum-tri-iridium or tungsten-tri-iridium clusters. Reactions of Mo2Ir2(μ-CO)3 (CO)7(η-C5H5)2 (6) with ButNC or diphenylacetylene proceed cleanly in high yield to afford Mo2Ir2(μ-CO)2 (CNBut)2(CO)6(η-C5 H5)2 (7) or Mo2Ir2 (μ4-η2-PhC2Ph) (μ-CO)4(CO)4(η-C5H5) 2 (8), respectively; reacting 7 with diphenylacetylene or 8 with ButNC results in a more complex mixture of products from which Mo2Ir2(μ4-η 2-PhC2Ph)(μ-CO)4(CNBut) (CO)3(η-C5H5)2 (9) can be isolated in low yield.",

keywords = "Carbonyl, Cluster, Iridium, Isocyanide, Molybdenum, Pentamethylcyclopentadienyl, Phosphine",

author = "Usher, \{Alistair J.\} and Humphrey, \{Mark G.\} and Willis, \{Anthony C.\}",

year = "2003",

month = oct,

day = "1",

doi = "10.1016/S0022-328X(03)00692-2",

language = "English",

volume = "682",

pages = "41--48",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Mixed-metal cluster chemistry 25 Mixed ligand derivatives of MoIr3(μ-CO)3(CO)8(η-C5 R5) (R=H, Me) (see abstract)

AU - Usher, Alistair J.

AU - Humphrey, Mark G.

AU - Willis, Anthony C.

PY - 2003/10/1

Y1 - 2003/10/1

N2 - Reactions of MoIr3(μ-CO)3(CO)8 (η-C5Me5) (1) with stoichiometric amounts of the isocyanide ButNC afford the ligand substituted clusters MoIr3(μ-CO)3 (CNBut)n(CO)8-n(η-C5 Me5) (n=1 (2), 2 (3), 3 (4)) in fair to good yields (13-58%). In contrast, 1 reacts with PPh3 to afford a single unexpected product, namely MoIr3(μ-CO)3(CO)6 (PPh3)2(η-C5Me5) (5). A single-crystal X-ray study of 5 reveals that the phosphines occupy coordination sites adjacent to the plane of bridging carbonyls in a radial-radial-axial conformation previously unobserved in structural studies of molybdenum-tri-iridium or tungsten-tri-iridium clusters. Reactions of Mo2Ir2(μ-CO)3 (CO)7(η-C5H5)2 (6) with ButNC or diphenylacetylene proceed cleanly in high yield to afford Mo2Ir2(μ-CO)2 (CNBut)2(CO)6(η-C5 H5)2 (7) or Mo2Ir2 (μ4-η2-PhC2Ph) (μ-CO)4(CO)4(η-C5H5) 2 (8), respectively; reacting 7 with diphenylacetylene or 8 with ButNC results in a more complex mixture of products from which Mo2Ir2(μ4-η 2-PhC2Ph)(μ-CO)4(CNBut) (CO)3(η-C5H5)2 (9) can be isolated in low yield.

AB - Reactions of MoIr3(μ-CO)3(CO)8 (η-C5Me5) (1) with stoichiometric amounts of the isocyanide ButNC afford the ligand substituted clusters MoIr3(μ-CO)3 (CNBut)n(CO)8-n(η-C5 Me5) (n=1 (2), 2 (3), 3 (4)) in fair to good yields (13-58%). In contrast, 1 reacts with PPh3 to afford a single unexpected product, namely MoIr3(μ-CO)3(CO)6 (PPh3)2(η-C5Me5) (5). A single-crystal X-ray study of 5 reveals that the phosphines occupy coordination sites adjacent to the plane of bridging carbonyls in a radial-radial-axial conformation previously unobserved in structural studies of molybdenum-tri-iridium or tungsten-tri-iridium clusters. Reactions of Mo2Ir2(μ-CO)3 (CO)7(η-C5H5)2 (6) with ButNC or diphenylacetylene proceed cleanly in high yield to afford Mo2Ir2(μ-CO)2 (CNBut)2(CO)6(η-C5 H5)2 (7) or Mo2Ir2 (μ4-η2-PhC2Ph) (μ-CO)4(CO)4(η-C5H5) 2 (8), respectively; reacting 7 with diphenylacetylene or 8 with ButNC results in a more complex mixture of products from which Mo2Ir2(μ4-η 2-PhC2Ph)(μ-CO)4(CNBut) (CO)3(η-C5H5)2 (9) can be isolated in low yield.

KW - Carbonyl

KW - Cluster

KW - Iridium

KW - Isocyanide

KW - Molybdenum

KW - Pentamethylcyclopentadienyl

KW - Phosphine

UR - https://www.scopus.com/pages/publications/0141818268

U2 - 10.1016/S0022-328X(03)00692-2

DO - 10.1016/S0022-328X(03)00692-2

M3 - Article

SN - 0022-328X

VL - 682

SP - 41

EP - 48

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1-2

ER -

Mixed-metal cluster chemistry 25 Mixed ligand derivatives of MoIr₃(μ-CO)₃(CO)₈(η-C₅ R₅) (R=H, Me) (see abstract)

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