Synthesis and Structure of a Tungsten η3-Enynyl Complex Resulting from Facile Alkynyl-Vlnylldene Coupling

Anne K. McMullen; John P. Selegue; Jin Guu Wang

doi:10.1021/om00056a005

Synthesis and Structure of a Tungsten η³-Enynyl Complex Resulting from Facile Alkynyl-Vlnylldene Coupling

Anne K. McMullen
, John P. Selegue
, Jin Guu Wang

Chemistry

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

68 Scopus citations

Abstract

Deprotonation of the bis(alkyne) complex [W-(CO)(η₂-HC=CCMe₃)₂(Cp*)][BF₄] (1) with KH gives the alkynyl/alkyne complex [W(C=CCMe₃)(CO)(η²-HC= CCMe₃)(Cp*)] (2), methylation of which gives the catbnic alkyne/vinylidene complex [W(C=CMeCMe₃)(CO)(η²-HC=CCMe₃)(Cp*)][BF₄] (3). Deprotonation of 3 with sodium bis(trimethylsilyl)amide under CO gives the crys-tallographically characterized η³-enynyl complex [W-(CO)₂(η³-Me₃CC=CC=CMeCMe₃)(Cp*)] (4) via the facile insertion of a vinylidene ligand into a metal-alkynyl σ-bond.

Original language	English
Pages (from-to)	3421-3423
Number of pages	3
Journal	Organometallics
Volume	10
Issue number	10
DOIs	https://doi.org/10.1021/om00056a005
State	Published - Oct 1 1991

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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10.1021/om00056a005

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title = "Synthesis and Structure of a Tungsten η3-Enynyl Complex Resulting from Facile Alkynyl-Vlnylldene Coupling",

abstract = "Deprotonation of the bis(alkyne) complex [W-(CO)(η2-HC=CCMe3)2(Cp*)][BF4] (1) with KH gives the alkynyl/alkyne complex [W(C=CCMe3)(CO)(η2-HC= CCMe3)(Cp*)] (2), methylation of which gives the catbnic alkyne/vinylidene complex [W(C=CMeCMe3)(CO)(η2-HC=CCMe3)(Cp*)][BF4] (3). Deprotonation of 3 with sodium bis(trimethylsilyl)amide under CO gives the crys-tallographically characterized η3-enynyl complex [W-(CO)2(η3-Me3CC=CC=CMeCMe3)(Cp*)] (4) via the facile insertion of a vinylidene ligand into a metal-alkynyl σ-bond.",

author = "McMullen, \{Anne K.\} and Selegue, \{John P.\} and Wang, \{Jin Guu\}",

year = "1991",

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doi = "10.1021/om00056a005",

language = "English",

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T1 - Synthesis and Structure of a Tungsten η3-Enynyl Complex Resulting from Facile Alkynyl-Vlnylldene Coupling

AU - McMullen, Anne K.

AU - Selegue, John P.

AU - Wang, Jin Guu

PY - 1991/10/1

Y1 - 1991/10/1

N2 - Deprotonation of the bis(alkyne) complex [W-(CO)(η2-HC=CCMe3)2(Cp*)][BF4] (1) with KH gives the alkynyl/alkyne complex [W(C=CCMe3)(CO)(η2-HC= CCMe3)(Cp*)] (2), methylation of which gives the catbnic alkyne/vinylidene complex [W(C=CMeCMe3)(CO)(η2-HC=CCMe3)(Cp*)][BF4] (3). Deprotonation of 3 with sodium bis(trimethylsilyl)amide under CO gives the crys-tallographically characterized η3-enynyl complex [W-(CO)2(η3-Me3CC=CC=CMeCMe3)(Cp*)] (4) via the facile insertion of a vinylidene ligand into a metal-alkynyl σ-bond.

AB - Deprotonation of the bis(alkyne) complex [W-(CO)(η2-HC=CCMe3)2(Cp*)][BF4] (1) with KH gives the alkynyl/alkyne complex [W(C=CCMe3)(CO)(η2-HC= CCMe3)(Cp*)] (2), methylation of which gives the catbnic alkyne/vinylidene complex [W(C=CMeCMe3)(CO)(η2-HC=CCMe3)(Cp*)][BF4] (3). Deprotonation of 3 with sodium bis(trimethylsilyl)amide under CO gives the crys-tallographically characterized η3-enynyl complex [W-(CO)2(η3-Me3CC=CC=CMeCMe3)(Cp*)] (4) via the facile insertion of a vinylidene ligand into a metal-alkynyl σ-bond.

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SN - 0276-7333

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JO - Organometallics

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Synthesis and Structure of a Tungsten η³-Enynyl Complex Resulting from Facile Alkynyl-Vlnylldene Coupling

Abstract

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