Tris(2-mercapto-1-tert-butylimidazolyl)hydroborato gallium derivatives: Synthesis of di- and trigallium compounds in a sulfur-rich coordination environment

Kevin Yurkerwich, Daniela Buccella, Jonathan G. Melnick, Gerard Parkin

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Abstract

A series of tris(2-mercapto-1-tert-butylimidazolyl)hydroborato gallium compounds have been synthesized. While GaI 3 and GaCl 3 afford mononuclear {[TmBu t]Ga} compounds, namely {[TmBu t]GaI}I, {[TmBu t]GaCl}[GaCl 4], and [κ 2-TmBu t] 2GaI, the reactions of "GaI", Ga[GaCl 4] and (HGaCl 2) 2 yield compounds that feature Ga-Ga bonds, namely [TmBu t]GaGaI 3, [TmBu t]GaGaCl 3, {[TmBu t]GaGa[TmBu t]}I 2, {[TmBu t]GaGa[TmBu t]} [GaCl 4] 2, {[TmBu t]Ga(GaI 2) Ga[TmBu t]}I and {[TmBu t]GaGa[TmBu t]}{[μ- κ 12-TmBu t]GaI 2GaI 2GaI} 2. These Ga-Ga bonded compounds may be formally regarded as donor-acceptor adducts between monovalent [TmBu t]Ga and various trivalent moieties; for example, [TmBu t]GaGaI 3 may be described as an adduct of [TmBu t]Ga and GaI 3, while {[TmBu t]Ga(GaI 2)Ga[TmBu t]} + is an adduct between two molecules of [TmBu t]Ga and [GaI 2] +. Comparison of the structure of [TmBu t]Ga→B(C 6F 5) 3 with that of [TmBu t] In→B(C 6F 5) 3 indicates that [TmBu t]Ga is a more effective Lewis base than is [TmBu t]In.

Original languageEnglish (US)
Pages (from-to)210-214
Number of pages5
JournalChemical Science
Volume1
Issue number2
DOIs
StatePublished - Aug 2010

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Gallium compounds
Lewis Bases
Gallium
Sulfur
Derivatives
Molecules

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  • Chemistry(all)

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Tris(2-mercapto-1-tert-butylimidazolyl)hydroborato gallium derivatives : Synthesis of di- and trigallium compounds in a sulfur-rich coordination environment. / Yurkerwich, Kevin; Buccella, Daniela; Melnick, Jonathan G.; Parkin, Gerard.

In: Chemical Science, Vol. 1, No. 2, 08.2010, p. 210-214.

Research output: Contribution to journalArticle

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title = "Tris(2-mercapto-1-tert-butylimidazolyl)hydroborato gallium derivatives: Synthesis of di- and trigallium compounds in a sulfur-rich coordination environment",
abstract = "A series of tris(2-mercapto-1-tert-butylimidazolyl)hydroborato gallium compounds have been synthesized. While GaI 3 and GaCl 3 afford mononuclear {[TmBu t]Ga} compounds, namely {[TmBu t]GaI}I, {[TmBu t]GaCl}[GaCl 4], and [κ 2-TmBu t] 2GaI, the reactions of {"}GaI{"}, Ga[GaCl 4] and (HGaCl 2) 2 yield compounds that feature Ga-Ga bonds, namely [TmBu t]GaGaI 3, [TmBu t]GaGaCl 3, {[TmBu t]GaGa[TmBu t]}I 2, {[TmBu t]GaGa[TmBu t]} [GaCl 4] 2, {[TmBu t]Ga(GaI 2) Ga[TmBu t]}I and {[TmBu t]GaGa[TmBu t]}{[μ- κ 1,κ 2-TmBu t]GaI 2GaI 2GaI} 2. These Ga-Ga bonded compounds may be formally regarded as donor-acceptor adducts between monovalent [TmBu t]Ga and various trivalent moieties; for example, [TmBu t]GaGaI 3 may be described as an adduct of [TmBu t]Ga and GaI 3, while {[TmBu t]Ga(GaI 2)Ga[TmBu t]} + is an adduct between two molecules of [TmBu t]Ga and [GaI 2] +. Comparison of the structure of [TmBu t]Ga→B(C 6F 5) 3 with that of [TmBu t] In→B(C 6F 5) 3 indicates that [TmBu t]Ga is a more effective Lewis base than is [TmBu t]In.",
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N2 - A series of tris(2-mercapto-1-tert-butylimidazolyl)hydroborato gallium compounds have been synthesized. While GaI 3 and GaCl 3 afford mononuclear {[TmBu t]Ga} compounds, namely {[TmBu t]GaI}I, {[TmBu t]GaCl}[GaCl 4], and [κ 2-TmBu t] 2GaI, the reactions of "GaI", Ga[GaCl 4] and (HGaCl 2) 2 yield compounds that feature Ga-Ga bonds, namely [TmBu t]GaGaI 3, [TmBu t]GaGaCl 3, {[TmBu t]GaGa[TmBu t]}I 2, {[TmBu t]GaGa[TmBu t]} [GaCl 4] 2, {[TmBu t]Ga(GaI 2) Ga[TmBu t]}I and {[TmBu t]GaGa[TmBu t]}{[μ- κ 1,κ 2-TmBu t]GaI 2GaI 2GaI} 2. These Ga-Ga bonded compounds may be formally regarded as donor-acceptor adducts between monovalent [TmBu t]Ga and various trivalent moieties; for example, [TmBu t]GaGaI 3 may be described as an adduct of [TmBu t]Ga and GaI 3, while {[TmBu t]Ga(GaI 2)Ga[TmBu t]} + is an adduct between two molecules of [TmBu t]Ga and [GaI 2] +. Comparison of the structure of [TmBu t]Ga→B(C 6F 5) 3 with that of [TmBu t] In→B(C 6F 5) 3 indicates that [TmBu t]Ga is a more effective Lewis base than is [TmBu t]In.

AB - A series of tris(2-mercapto-1-tert-butylimidazolyl)hydroborato gallium compounds have been synthesized. While GaI 3 and GaCl 3 afford mononuclear {[TmBu t]Ga} compounds, namely {[TmBu t]GaI}I, {[TmBu t]GaCl}[GaCl 4], and [κ 2-TmBu t] 2GaI, the reactions of "GaI", Ga[GaCl 4] and (HGaCl 2) 2 yield compounds that feature Ga-Ga bonds, namely [TmBu t]GaGaI 3, [TmBu t]GaGaCl 3, {[TmBu t]GaGa[TmBu t]}I 2, {[TmBu t]GaGa[TmBu t]} [GaCl 4] 2, {[TmBu t]Ga(GaI 2) Ga[TmBu t]}I and {[TmBu t]GaGa[TmBu t]}{[μ- κ 1,κ 2-TmBu t]GaI 2GaI 2GaI} 2. These Ga-Ga bonded compounds may be formally regarded as donor-acceptor adducts between monovalent [TmBu t]Ga and various trivalent moieties; for example, [TmBu t]GaGaI 3 may be described as an adduct of [TmBu t]Ga and GaI 3, while {[TmBu t]Ga(GaI 2)Ga[TmBu t]} + is an adduct between two molecules of [TmBu t]Ga and [GaI 2] +. Comparison of the structure of [TmBu t]Ga→B(C 6F 5) 3 with that of [TmBu t] In→B(C 6F 5) 3 indicates that [TmBu t]Ga is a more effective Lewis base than is [TmBu t]In.

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