Preparation and properties of tantalum and tungsten multiple imido compounds with pentamethylcyclopentadienyl ligands

Persistent Link:
http://hdl.handle.net/10150/291830
Title:
Preparation and properties of tantalum and tungsten multiple imido compounds with pentamethylcyclopentadienyl ligands
Author:
Baldwin, Theodore Chambers, 1969-
Issue Date:
1994
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The synthesis, characterization, and reactivity of three-fold (1σ, 2π) donor complexes of tungsten and tantalum have been explored. (η⁵-C₅Me₅)W(=NAr)₂Cl (1) has been prepared from the reaction of W(=NAr)₂Cl₂(THF)₂ with Li(C₅Me₅). Complex 1 can be functionalized by sigma-donor ligands, but 1 reacts with 1σ, 1π donors such as 2,6-diisopropylphenylamide to give the intramolecular C-H bond activated product, (η⁵-C₅Me₄CH₂)W(=NAr)₂(5). [(η⁵-C₅Me₅)Ta(=NAr)₂Cl)]⁻ was synthesized by reacting (η⁵-C₅Me₅)TaCl₄ or (η⁵-C₅Me₅)Ta(NAr)Cl₂ (6) with excess of 2,6-diisopropylphenylamide. The mechanism of formation of [(η⁵-C₅Me₅)Ta(=NAr)₂Cl)]⁻ was investigated. Structures of (η⁵-C₅Me₅)W(=NAr)₂Cl (1) and [Li(OEt₂)][(η⁵-C₅Me₅)Ta(NAr)₂Cl] (7) are reported.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Chemistry, Inorganic.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Chemistry
Degree Grantor:
University of Arizona
Advisor:
Wigley, David E.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titlePreparation and properties of tantalum and tungsten multiple imido compounds with pentamethylcyclopentadienyl ligandsen_US
dc.creatorBaldwin, Theodore Chambers, 1969-en_US
dc.contributor.authorBaldwin, Theodore Chambers, 1969-en_US
dc.date.issued1994en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe synthesis, characterization, and reactivity of three-fold (1σ, 2π) donor complexes of tungsten and tantalum have been explored. (η⁵-C₅Me₅)W(=NAr)₂Cl (1) has been prepared from the reaction of W(=NAr)₂Cl₂(THF)₂ with Li(C₅Me₅). Complex 1 can be functionalized by sigma-donor ligands, but 1 reacts with 1σ, 1π donors such as 2,6-diisopropylphenylamide to give the intramolecular C-H bond activated product, (η⁵-C₅Me₄CH₂)W(=NAr)₂(5). [(η⁵-C₅Me₅)Ta(=NAr)₂Cl)]⁻ was synthesized by reacting (η⁵-C₅Me₅)TaCl₄ or (η⁵-C₅Me₅)Ta(NAr)Cl₂ (6) with excess of 2,6-diisopropylphenylamide. The mechanism of formation of [(η⁵-C₅Me₅)Ta(=NAr)₂Cl)]⁻ was investigated. Structures of (η⁵-C₅Me₅)W(=NAr)₂Cl (1) and [Li(OEt₂)][(η⁵-C₅Me₅)Ta(NAr)₂Cl] (7) are reported.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectChemistry, Inorganic.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineChemistryen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorWigley, David E.en_US
dc.identifier.proquest1361556en_US
dc.identifier.bibrecord.b328290739en_US
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