Synthesis and Reactivity of Manganese(II) Complexes Containing N‑Heterocyclic Carbene Ligands
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https://figshare.com/articles/dataset/Synthesis_and_Reactivity_of_Manganese_II_Complexes_Containing_N_Heterocyclic_Carbene_Ligands/2118400
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资源简介：
A series
of manganese(II) complexes containing aryl-substituted
N-heterocyclic carbene (NHC) ligands have been synthesized and characterized.
Chloride complexes of Mn(II) containing the NHC ligands 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene
(IPr) and 1,3-dimesitylimidazol-2-ylidene (IMes) were prepared in
straightforward fashion by direct carbene addition to MnCl2(THF)1.6. These complexes exist as chloride-bridged dimers
in solution of formula [Mn2Cl2(μ-Cl)2(NHC)2]. The monomeric complex [MnCl2(IMes)2] has also been prepared and structurally characterized,
although NMR studies are consistent with facile dissociation of one
of the IMes ligands in solution. [Mn2Cl2(μ-Cl)2(IPr)2] serves as a precursor to dimeric alkyl
and aryl compounds of Mn(II) including [Mn2R2(μ-Cl)2(NHC)2] (R = Bn, o-tolyl, and Ph) and the bridging methyl complex [Mn2Me2(μ-Me)2(IPr)2]. Stoichiometric
reactions of these hydrocarbyl species with bromocyclohexane demonstrate
that they are not chemically competent in C–C coupling reactions
involving alkyl electrophiles.
创建时间：
2016-02-12
