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

Research output: Contribution to journalArticlepeer-review

Abstract

A series of tris(2-mercapto-1-tert-butylimidazolyl)hydroborato gallium compounds have been synthesized. While GaI3 and GaCl3 afford mononuclear {[TmBut]Ga} compounds, namely {[TmBu t]GaI}I, {[TmBut]GaCl}[GaCl4], and [κ2-TmBut]2GaI, the reactions of "GaI", Ga[GaCl4] and (HGaCl2)2 yield compounds that feature Ga-Ga bonds, namely [TmBut]GaGaI3, [TmBut]GaGaCl3, {[TmBut]GaGa[TmBu t]}I2, {[TmBut]GaGa[TmBut]} [GaCl4]2, {[TmBut]Ga(GaI2) Ga[TmBut]}I and {[TmBut]GaGa[TmBut]}{[μ- κ12-TmBut]GaI2GaI 2GaI}2. These Ga-Ga bonded compounds may be formally regarded as donor-acceptor adducts between monovalent [TmBut]Ga and various trivalent moieties; for example, [TmBut]GaGaI3 may be described as an adduct of [TmBut]Ga and GaI3, while {[TmBut]Ga(GaI2)Ga[TmBut]}+ is an adduct between two molecules of [TmBut]Ga and [GaI2] +. Comparison of the structure of [TmBut]Ga→B(C 6F5)3 with that of [TmBut] In→B(C6F5)3 indicates that [TmBu t]Ga is a more effective Lewis base than is [TmBut]In.

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

ASJC Scopus subject areas

  • Chemistry(all)

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