Preparation and structure of lithium Bis[cis-ethene-1,2-di(tbutylamido)]gallate(III)tetrahydrofuran

Eva S. Schmidt; Norbert W. Mitzel; Hubert Schmidbaur

doi:10.1515/znb-2001-0912

Preparation and structure of lithium Bis[cis-ethene-1,2-di(^tbutylamido)]gallate(III)tetrahydrofuran

Eva S. Schmidt, Norbert W. Mitzel, Hubert Schmidbaur

Department of Chemistry

Technical University of Munich

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

4 Scopus citations

Abstract

The dilithium diamide reagent obtained from N,N'-di(^tbutyl)-1,4-diazabutadiene and two equivalents of lithium metal reacts with anhydrous gallium trichloride in tetrahydrofuran / hexane, followed by treatment with metallic potassium, to give the title compound in about 40% yield. Cyclic imides of gallium(III) and gallium(II) are by-products of this process. The structure of Li{[cis-C₂H₂(N^tBu)₂]₂Ga} has been determined from single crystals containing one mole equivalent of tetrahydrofuran. The gallium atom is chelated by two diamide ligands. One of the five-membered chelate rings is planar while the second one is folded at its nitrogen atoms. The lithium atom is η⁴-coordinated to the 1,4-diazabutene(2) unit of this ring and further to the oxygen atom of the solvent molecule.

Original language	English
Pages (from-to)	937-939
Number of pages	3
Journal	Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Volume	56
Issue number	9
DOIs	https://doi.org/10.1515/znb-2001-0912
State	Published - Sep 2001

Keywords

Gallium amido complex
Gallium(III) amide
Lithium gallate.

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title = "Preparation and structure of lithium Bis[cis-ethene-1,2-di(tbutylamido)]gallate(III)tetrahydrofuran",

abstract = "The dilithium diamide reagent obtained from N,N'-di(tbutyl)-1,4-diazabutadiene and two equivalents of lithium metal reacts with anhydrous gallium trichloride in tetrahydrofuran / hexane, followed by treatment with metallic potassium, to give the title compound in about 40% yield. Cyclic imides of gallium(III) and gallium(II) are by-products of this process. The structure of Li{[cis-C2H2(NtBu)2]2Ga} has been determined from single crystals containing one mole equivalent of tetrahydrofuran. The gallium atom is chelated by two diamide ligands. One of the five-membered chelate rings is planar while the second one is folded at its nitrogen atoms. The lithium atom is η4-coordinated to the 1,4-diazabutene(2) unit of this ring and further to the oxygen atom of the solvent molecule.",

keywords = "Gallium amido complex, Gallium(III) amide, Lithium gallate.",

author = "Schmidt, {Eva S.} and Mitzel, {Norbert W.} and Hubert Schmidbaur",

year = "2001",

month = sep,

doi = "10.1515/znb-2001-0912",

language = "English",

volume = "56",

pages = "937--939",

journal = "Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences",

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T1 - Preparation and structure of lithium Bis[cis-ethene-1,2-di(tbutylamido)]gallate(III)tetrahydrofuran

AU - Schmidt, Eva S.

AU - Mitzel, Norbert W.

AU - Schmidbaur, Hubert

PY - 2001/9

Y1 - 2001/9

N2 - The dilithium diamide reagent obtained from N,N'-di(tbutyl)-1,4-diazabutadiene and two equivalents of lithium metal reacts with anhydrous gallium trichloride in tetrahydrofuran / hexane, followed by treatment with metallic potassium, to give the title compound in about 40% yield. Cyclic imides of gallium(III) and gallium(II) are by-products of this process. The structure of Li{[cis-C2H2(NtBu)2]2Ga} has been determined from single crystals containing one mole equivalent of tetrahydrofuran. The gallium atom is chelated by two diamide ligands. One of the five-membered chelate rings is planar while the second one is folded at its nitrogen atoms. The lithium atom is η4-coordinated to the 1,4-diazabutene(2) unit of this ring and further to the oxygen atom of the solvent molecule.

AB - The dilithium diamide reagent obtained from N,N'-di(tbutyl)-1,4-diazabutadiene and two equivalents of lithium metal reacts with anhydrous gallium trichloride in tetrahydrofuran / hexane, followed by treatment with metallic potassium, to give the title compound in about 40% yield. Cyclic imides of gallium(III) and gallium(II) are by-products of this process. The structure of Li{[cis-C2H2(NtBu)2]2Ga} has been determined from single crystals containing one mole equivalent of tetrahydrofuran. The gallium atom is chelated by two diamide ligands. One of the five-membered chelate rings is planar while the second one is folded at its nitrogen atoms. The lithium atom is η4-coordinated to the 1,4-diazabutene(2) unit of this ring and further to the oxygen atom of the solvent molecule.

KW - Gallium amido complex

KW - Gallium(III) amide

KW - Lithium gallate.

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U2 - 10.1515/znb-2001-0912

DO - 10.1515/znb-2001-0912

M3 - Article

AN - SCOPUS:0041025110

SN - 0932-0776

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JO - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences

JF - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences

IS - 9

ER -

Preparation and structure of lithium Bis[cis-ethene-1,2-di(^tbutylamido)]gallate(III)tetrahydrofuran

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