6533b835fe1ef96bd129f2b5
RESEARCH PRODUCT
Synthesis of copper(II) and gold(III) bis(NHC)-pincer complexes
Katja HeinzeDoris KunzJohannes J. MayerOliver BackEva Jürgenssubject
010405 organic chemistryChemistryLigandCationic polymerizationchemistry.chemical_elementGeneral Chemistry010402 general chemistry01 natural sciencesCopperMedicinal chemistry0104 chemical sciencesPincer movementlaw.inventionchemistry.chemical_compoundTransmetalationlawElectron paramagnetic resonancePincer ligandCarbenedescription
Abstract CuII and AuIII chlorido complexes bearing the bis(NHC) carbazolide pincer ligand (bimca) were synthesized by transmetallation from the respective lithium complex [Li(bimca)] (NHC=N-heterocyclic carbene). In the case of copper, two different molecular structures were obtained depending on the copper source. With Cu(II) chloride the paramagnetic mononuclear [Cu(bimca)Cl] complex is formed and has been characterized by EPR spectroscopy and X-ray structure analysis, while copper(I) chloride leads under oxidation to a dinuclear structure in which two cationic [CuII(bimca)] moieties are bridged by one chlorido ligand. The positive charge is compensated by the [CuCl2]− counter ion, as proven by X-ray structure analysis. Transmetallation of [Li(bimca)] with AuCl3 leads to the [Au(bimca)Cl]+ complex with a tetrachloridoaurate counter ion.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-09-22 | Zeitschrift für Naturforschung B |