Mixed-metal cluster chemistry XII: Isocyanide derivatives of [CpWIr3(CO)11]; X-ray crystal structure of [CpWIr3(CO)9(CNC6H3Me 2-2,6)2]

Susan M. Waterman; Mark G. Humphrey; David C.R. Hockless

doi:10.1016/S0022-328X(98)01200-5

Mixed-metal cluster chemistry XII: Isocyanide derivatives of [CpWIr₃(CO)₁₁]; X-ray crystal structure of [CpWIr₃(CO)₉(CNC₆H₃Me ₂-2,6)₂]

Susan M. Waterman
, Mark G. Humphrey^*
, David C.R. Hockless

^*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

Reactions of [CpWIr₃(CO)₁₁] (1) with stoichiometric amounts of isocyanides afford the clusters [CpWIr₃(CO)_11-n(CNR)_n] [R = Xy (C₆H₃Me₂-2,6), n = 1 (2), 2 (3), 3 (4); R = ^tBu, n = 1 (5), 2 (6), 3 (7)] in good to excellent yields (47-63%). The products exhibit ligand fluxionality in solution, with the ¹³C-NMR spectra of 4-6 revealing that the carbonyls are undergoing fast exchange at 143 K. A single-crystal X-ray study of [CpWIr₃(CO)₉(CNXy)₂] (3) reveals that the coordination sphere of the cluster has an all-terminal ligand geometry, the first for a ligand substituted derivative of 1. The two iridium-ligated 2,6-dimethylphenylisocyanide ligands are coordinated to the same iridium vertex, the second example of this coordination geometry for a transition metal cluster.

Original language	English
Pages (from-to)	75-82
Number of pages	8
Journal	Journal of Organometallic Chemistry
Volume	579
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-328X(98)01200-5
Publication status	Published - 5 May 1999

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@article{7d7f4fb92e3548639b7eb3a86a5c487e,

title = "Mixed-metal cluster chemistry XII: Isocyanide derivatives of [CpWIr3(CO)11]; X-ray crystal structure of [CpWIr3(CO)9(CNC6H3Me 2-2,6)2]",

abstract = "Reactions of [CpWIr3(CO)11] (1) with stoichiometric amounts of isocyanides afford the clusters [CpWIr3(CO)11-n(CNR)n] [R = Xy (C6H3Me2-2,6), n = 1 (2), 2 (3), 3 (4); R = tBu, n = 1 (5), 2 (6), 3 (7)] in good to excellent yields (47-63\%). The products exhibit ligand fluxionality in solution, with the 13C-NMR spectra of 4-6 revealing that the carbonyls are undergoing fast exchange at 143 K. A single-crystal X-ray study of [CpWIr3(CO)9(CNXy)2] (3) reveals that the coordination sphere of the cluster has an all-terminal ligand geometry, the first for a ligand substituted derivative of 1. The two iridium-ligated 2,6-dimethylphenylisocyanide ligands are coordinated to the same iridium vertex, the second example of this coordination geometry for a transition metal cluster.",

keywords = "Fluxionality, Iridium carbonyl, Isocyanide, Tungsten",

author = "Waterman, \{Susan M.\} and Humphrey, \{Mark G.\} and Hockless, \{David C.R.\}",

year = "1999",

month = may,

day = "5",

doi = "10.1016/S0022-328X(98)01200-5",

language = "English",

volume = "579",

pages = "75--82",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Mixed-metal cluster chemistry XII

T2 - Isocyanide derivatives of [CpWIr3(CO)11]; X-ray crystal structure of [CpWIr3(CO)9(CNC6H3Me 2-2,6)2]

AU - Waterman, Susan M.

AU - Humphrey, Mark G.

AU - Hockless, David C.R.

PY - 1999/5/5

Y1 - 1999/5/5

N2 - Reactions of [CpWIr3(CO)11] (1) with stoichiometric amounts of isocyanides afford the clusters [CpWIr3(CO)11-n(CNR)n] [R = Xy (C6H3Me2-2,6), n = 1 (2), 2 (3), 3 (4); R = tBu, n = 1 (5), 2 (6), 3 (7)] in good to excellent yields (47-63%). The products exhibit ligand fluxionality in solution, with the 13C-NMR spectra of 4-6 revealing that the carbonyls are undergoing fast exchange at 143 K. A single-crystal X-ray study of [CpWIr3(CO)9(CNXy)2] (3) reveals that the coordination sphere of the cluster has an all-terminal ligand geometry, the first for a ligand substituted derivative of 1. The two iridium-ligated 2,6-dimethylphenylisocyanide ligands are coordinated to the same iridium vertex, the second example of this coordination geometry for a transition metal cluster.

AB - Reactions of [CpWIr3(CO)11] (1) with stoichiometric amounts of isocyanides afford the clusters [CpWIr3(CO)11-n(CNR)n] [R = Xy (C6H3Me2-2,6), n = 1 (2), 2 (3), 3 (4); R = tBu, n = 1 (5), 2 (6), 3 (7)] in good to excellent yields (47-63%). The products exhibit ligand fluxionality in solution, with the 13C-NMR spectra of 4-6 revealing that the carbonyls are undergoing fast exchange at 143 K. A single-crystal X-ray study of [CpWIr3(CO)9(CNXy)2] (3) reveals that the coordination sphere of the cluster has an all-terminal ligand geometry, the first for a ligand substituted derivative of 1. The two iridium-ligated 2,6-dimethylphenylisocyanide ligands are coordinated to the same iridium vertex, the second example of this coordination geometry for a transition metal cluster.

KW - Fluxionality

KW - Iridium carbonyl

KW - Isocyanide

KW - Tungsten

UR - https://www.scopus.com/pages/publications/0001895346

U2 - 10.1016/S0022-328X(98)01200-5

DO - 10.1016/S0022-328X(98)01200-5

M3 - Article

SN - 0022-328X

VL - 579

SP - 75

EP - 82

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1-2

ER -

Mixed-metal cluster chemistry XII: Isocyanide derivatives of [CpWIr₃(CO)₁₁]; X-ray crystal structure of [CpWIr₃(CO)₉(CNC₆H₃Me ₂-2,6)₂]

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