Rational synthesis of normal, abnormal and anionic NHC-gallium alkyl complexes: structural, stability and isomerization insights.

ABSTRACT: Advancing the rational design of main-group N-heterocyclic carbene complexes, this study reports the synthesis, X-ray crystallographic and NMR spectroscopic characterisation of a novel series of Ga complexes containing neutral or anionic NHC ligands using the unsaturated carbene IPr (IPr = 1,3-bis-(2,6-di-isopropylphenyl)imidazol-2-ylidene). Starting from normal adduct GaR₃·IPr (1) (R = CH₂SiMe₃), the addition of polar LiR led to the formation of NHC-stabilised gallate species IPr·LiGaR₄ (2), resulting from co-complexation of the single-metal species. Contrastingly, reversing the order of addition of these organometallic reagents, by treating unsaturated free IPr, first with LiR followed by GaR₃, furnished novel heterolep

SUBMITTER: Uzelac M 

PROVIDER: S-EPMC5975842 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature